DOCSLIB.ORG

Geologisk Tidsskrift 1999, Hæfte 1, Pp. 24-32

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Geologisk Tidsskrift 1999, Hæfte 1, Pp. 24-32 Forenings- Malmgeologisk Klub Møderne afholdes på Geologisk Institut, Østervoldgade 10, meddelelser København. Nordisk Geologisk Vintermøde 2000 i Trondhjem, Norge – Ansøg DGF om tilskud Palæontologisk klub Danske specialestuderende har nu mulighed for at få dæk- ket deres rejseudgifter ved deltagelse i de nordiske geolo- giske vintermøder. Midlerne stammer fra overskuddet fra Tirsdag d. 13. april 1999: P. Christiansen: En vægtig suc- 23. Nordiske Geologiske Vintermøde i Århus i 1998. ces: Elefanternes udvikling. Ansøgning om tilskud til rejser indsendes til DGF. Yderli- Tirsdag d. ??. april 1999: T. Ekdale: Om sporfossiler, K/T gere oplysninger og ansøgningsskema findes på DGF’s grænse m.v. websted – 2dgf.dk. Tirsdag d. 27. april 1999: P. Makovicky: Dinosaurer og Ansøgningerne bedømmes af to af Dansk Geologisk For- æg fra Gobi. enings bestyrelsesmedlemmer, et fra København og et fra Tirsdag d. 4. maj 1999: R. Bromley & B. Richter: Compu- Århus. ter-forfalskning af fossilillustrationer. Retningslinier: Tirsdag d. 11. maj 1999: R. Dingle: Palaeoclimates, pre- 1) Der gives tilskud til danske specialestuderendes delta- and early glacial in Antarctica. gelse i Nordisk Geologisk Vintermøde under forudsæt- ning af, at ansøgeren skal holde foredrag eller præsen- tere poster. Abstract skal indsendes sammen med an- søgningen. Petrologisk klub 2) Der gives principielt kun tilskud til én forfatter i forbin- Foredragene finder sted onsdage kl. 12.15–13.00 i audito- delse med et foredrag eller en poster. rium a, trappe A, 2. sal på Geologisk Institut, Øster Vold- 3) Som kvittering for bevillingen skal der indsendes en kort gade 10, København. Henvendelse om foredrag til Poul rapport (max. en halv A-4 side) til Dansk Geologisk Martin Holm, e-post: [email protected], Lotte Forening umiddelbart efter hjemkomsten fra mødet. Melchior Larsen, e-post: [email protected] eller Minik Rosing, e-post: [email protected]. Onsdag d. 7. april 1999: Birgitte Printz Christensen (GI): Vulkaniter fra Kap Verde Øerne. Kommende møder Onsdag d. 14 . april 1999: Erik Krogstad (DLC): (emne Dansk Mineralogisk Selskab endnu ikke fastlagt). Onsdag d. 21. april 1999: Henrik Stendal (GI): Guld i Syd- Møderne afholdes fredage på Geologisk Museum, Øster grønland – genese. Voldgade 5–7, København. Onsdag d. 28. april 1999: Henriette Hansen (DLC): Gene- sis of high Tipicrites in East Greenland. Onsdag d. 5. maj 1999: Michael Storey (DLC): 3.9 Ga DGF FORUM pillow lavas from Issua, West Greenland. For Anvendt Geologi Onsdag d. 12. maj 1999: Adam Garde (GEUS): Ketiliderne. Onsdag d. 19. maj 1999: Lars Ole Boldreel (GI): Færø- Tirsdag d. 20. april 1999 kl.17–21: Møde om oliegeologi erne i Tertiær. arrangeret i samarbejde med Mærsk Olie og Gas samt SPE. Onsdag d. 26. maj 1999: Jens Konnerup-Madsen (GI): Mødet afholdes hos Mærsk Olie og Gas, Esplanaden 50, Fluids in South Norway. 1263 København K. Begrænset antal deltagere. Tilmelding Onsdag d. 2. juni 1999: Bjørn Hageskov (GI): Shearzone- og eventuelle spørgsmål til: & forkastningsproblemer langs Oslo riftens østrand. Poul Henrik Due, Teknologisk Institut, Byggeri, Tlf. 4350 Onsdag d. 9. juni: Jesper Øksne Jørgensen (GI): Oceanic 4118 eller e-post: [email protected]. carbonatites. Program: Kl. 17.00: Social event Kl. 18.00: Mærsk Olie og Gas: Geology of the Tagi reser- Sedimentologisk klub voir in Algeria. Alle fordrag holdes onsdage kl. 15.00 i Kl. 18.20: Mærsk Olie og Gas: Integrated geophysical and mødelokale 3, trappe B. 3. sal på Geo- geological study of the reservoir potential of the chalk se- logisk Institut, Øster Voldgade 10, Kø- quence in the Danish Central Graben. benhavn. Kl. 18.40: Amerada Hess: South Arne geological model. Kl. 19.00: Spisning. Kl. 20.00: Phillips Petroleum: Maturity modelling of the southern flank of the Rub al Khali Basin. Kl. 20.20: Statoil: Siri field geological model. 24 Geologisk Tidsskrift 1 / 1999 Side 24-32.p65 24 17-04-99, 09:24 Palaeogene and older beds are truncated by erosional Afholdte møder unconformities along many coastlines. Accelerated late Cenozoic subsidence is well known in many offshore areas adjacent to the uplifted landmasses. A variety of methods that have been used to investigate uplift, erosion and rede- position: studies of maximum burial, fission tracks, geomorphology, sediment supply and of structural relati- ons. These methods each investigate only one aspect of the phenomenon, and a thorough understanding of the proces- ses of uplift and erosion can only be achieved if results from these methods are integrated. The main mechanisms suggested in the literature for the large-scale, late Cenozoic events are: emplacement of magma in and at the base of the crust leading to isostatic uplift, flow of asthenospheric material into active diapirs, isostacy associated with glacial erosion, phase changes in the lithosphere due to pressure relief and regional com- pression of the lithosphere. A general model must be constrained by observations from all affected areas and must be based on several methods rather than just one. It must also take into account that the fact that the effects reach well into the craton. L.O. Boldreel (GI) & M. S. Sparre (GEUS): Vertical movement on the northern part of the Faroe-Rockall pla- teau during the Cenozoic as illustrated from reflectionseis- mic data. L. Jensen (StatOil): Kænozoisk hævning af Skandinavien. Torsdag d. 3. december 1998: Ole Graversen (Geologisk Institut, København): Plio- Temamøde: Uro i Danmarks og Grønlands Undergrund Pleistocæn hævning af Det danske Bassin. En strukturel analyse af den præ-kvartære flade i Danmark På mødet blev Danmarks Geologipris, der er på 25 000 kr viser, at Palæogen og Neogen har gennemgået en række tildelt Peter Japsen. intraplade-deformationer. De tektoniske faser kan registre- Peter Japsen er geofysiker og ansat som seniorforsker ved res som regionalt udviklede diskontinuitetsflader og ved Danmarks og Grønlands Geologiske Undersøgelse (GEUS). den lithologiske ændring omkring grænserne (Graversen Peter Japsen har siden 1980 arbejdet med forskellige aspek- 1998, submitted). I Midtjylland styres bassinindsynkningen ter af Nordsøens geologi, herunder teorier vedrørende land- i Miocæn af en V-dykkende akse. Den senere deformation hævning og erosion i Danmark og Nordsøen. Hans forsk- af de miocæne aflejringer følger derimod en NV-dykkende ning bidrager også til den fortsatte udnyttelse af Nordsø- foldeakse, der viser, at det post-miocæne regionale stress- ens olie- og gasforekomster. felt er ændret. Den nye retning er parallel med kurverne Prisen uddeles én gang om året af Danmarks og Grønlands for den neogene hævning (Jensen & Michelsen 1992, Geologiske Undersøgelse (GEUS) efter indstilling fra Japsen 1992, 1993), og vitrinitreflektansdata (Thomsen i Dansk Geologisk Forenings bestyrelse. Koch 1989) viser, at 200 m hævningslinien går igennem Søby-Fasterholt området i Midtjylland (Fig. 1). James A. Chalmers (GEUS): Den Kænozoiske hævning i Ved overgangen til Pliocæn forskydes kystlinien (coastal Grønland: Islandsk plume, glacial erosion fra istiden eller onlap) mod sydvest (Michelsen 1994), og det foreslås, at noget andet? denne relative havniveausænkning kan relateres til den ini- There appear to have been at least two significant episodes tiale fase af den neogene hævning. Denne model bekræf- of uplift around the North Atlantic during the Cenozoic, tes af den fortsatte forskydning af kystlinien ud i bassinet and in many places it is not easy to separate the two. Effects op igennem Pliocæn (Michelsen 1996). related to emplacement of the Iceland plume probably Esrum-Alnarp dalen er en graben, der gennemskærer caused one episode, mostly in the Palaeogene. The second Danien kalken i den Fennoskandiske Randzone. Graben er episode took place in the late Cenozoic, and comprised formodentlig etableret i Eem-Weichel (ældste aflejringer: uplift of basin margins as well as accelerated subsidence tidlig Weichel, Schuldt 1981), og det viser, at hævning og of basin centres. Cenozoic uplift of Scandinavia and of the strækning af skorpen kan registreres frem til sen Pleistocæn. British Isles has been suggested since at least the beginning Erosionen efter anlæggelse af graben andrager omkring 100 of the 20th century. However, it is only recently being m. recognised in the literature that a major Neogene tectonic Den regressive og trinvise udvikling af marint onlap igen- event has affected nearly every continental margin in the nem Pliocæn og etableringen af Esrum-Alnarp Graben vi- area (including western and eastern Greenland) and far into ser at den Plio-Pleistocæne hævning af Det danske Bassin the European craton. Pre-Cenozoic rocks are generally må antages at være foregået i en række adskilte faser. Geo- exposed onshore and the pre-Quaternary sediments offshore dætiske målinger af de vertikale ændringer af Danmarks are generally of Neogene age. Between the two, inclined recente overflade viser sammen med jordskælvsaktiviteten Foreningsmeddelelser 25 Side 24-32.p65 25 17-04-99, 09:24 Platform edge was uplifted resulting in thickness minima and the depocenter shifted to the eastern Jelgava Depres- sion. A similar, but less developed North-Estonian depres- sion was separated from the Jelgava Depression by the South-Estonian uplift. The main phase of the Caledonian Orogeny was reflected by the rapid deposition of the Silurian deposited in a foreland basin setting. Rates of deposition changed from 1 to 10 m/Ma as reported for the Alum Shale to in excess of 500 m/Ma in the Ludlow. This phase is thought to be coeval with the main phase of the Caledonian Orogeny. The Silurian is erosionally truncated by overlying Devonian deposits in the central eastern portion of the Baltic area. The Liepaja-Saldus High with the associated Liepaja and Gdansk-Kura Depressions were formed in the latest Silurian earliest Devonian probably corresponding to a final phase in the Caledonian Orogeny, and are thus post depositional features. Outside the Devonian occurrences, the erosional truncation of the Lower Palaeozoic succession is even N bigger, and the extent of the entire Baltic Synclinorum is 50 KM defined by erosion. To the North, the limit is found in the Pre-Quaternary whereas the erosional limit to the south Fig.
Load more

Recommended publications
  • 'Placoderm' (Arthrodira)
    Jobbins et al. Swiss J Palaeontol (2021) 140:2 https://doi.org/10.1186/s13358-020-00212-w Swiss Journal of Palaeontology RESEARCH ARTICLE Open Access A large Middle Devonian eubrachythoracid ‘placoderm’ (Arthrodira) jaw from northern Gondwana Melina Jobbins1* , Martin Rücklin2, Thodoris Argyriou3 and Christian Klug1 Abstract For the understanding of the evolution of jawed vertebrates and jaws and teeth, ‘placoderms’ are crucial as they exhibit an impressive morphological disparity associated with the early stages of this process. The Devonian of Morocco is famous for its rich occurrences of arthrodire ‘placoderms’. While Late Devonian strata are rich in arthrodire remains, they are less common in older strata. Here, we describe a large tooth-bearing jaw element of Leptodontich- thys ziregensis gen. et sp. nov., an eubrachythoracid arthrodire from the Middle Devonian of Morocco. This species is based on a large posterior superognathal with a strong dentition. The jawbone displays features considered syna- pomorphies of Late Devonian eubrachythoracid arthrodires, with one posterior and one lateral row of conical teeth oriented postero-lingually. μCT-images reveal internal structures including pulp cavities and dentinous tissues. The posterior orientation of the teeth and the traces of a putative occlusal contact on the lingual side of the bone imply that these teeth were hardly used for feeding. Similar to Compagopiscis and Plourdosteus, functional teeth were pos- sibly present during an earlier developmental stage and have been worn entirely. The morphological features of the jaw element suggest a close relationship with plourdosteids. Its size implies that the animal was rather large. Keywords: Arthrodira, Dentition, Food web, Givetian, Maïder basin, Palaeoecology Introduction important to reconstruct character evolution in early ‘Placoderms’ are considered as a paraphyletic grade vertebrates.
    [Show full text]
  • Arthrodira, Homostiidae) from the Emsian of Aragón, Spain, and Its Distribution
    FISH FROM THE EMSIAN OF ARAGÓN 139 Tityosteus, A MARINE FISH (ARTHRODIRA, HOMOSTIIDAE) FROM THE EMSIAN OF ARAGÓN, SPAIN, AND ITS DISTRIBUTION Elga MARK-KURIK1 and Peter CARLS2 1 Institute of Geology. Tallinn University of Technology, Estonia Avenue 7, 10143 Tallinn, Estonia. E-mail: [email protected] 2 Institut für Umweltgeologie, Technische Universität, Braunschweig, Pockels- Str. 3, D 38106, Germany. Mark-Kurik, E. and Carls, P. 2004. Tityosteus, a marine fish (Arthrodira, Homostiidae) from the Emsian of Aragón, Spain, and its distribution. [Tityosteus, un pez marino (Arthrodira, Homostiidae) del Emsiense de Aragón, España, y su distribución.] Revista Española de Paleontología, 19 (2), 139-144. ISSN 0213-6937. ABSTRACT A right marginal plate (over 11 cm long) of Tityosteus cf. rieversae Gross, 1960, emend., has been found in the late part of the Early Emsian (late Zlichovian) in the Mariposas Fm. of the Eastern Iberian Cordillera in south- ern Aragón. The palaeoecological conditions correspond to a hemipelagic ensialic basin, with predominant ele- ments of Hercynic biofacies but still with photic bottom. The Emsian genus Tityosteus is now known from the Hunsrück Schiefer of Germany and the closely connected Ibero-Armorican Trough and also from the more dis- tant Minusinsk Basin of southern Siberia. Palaeo-oceans between western Europe and southern Siberia were no zoogeographical barriers for these large, possibly microphagous fishes in open sea. The name of the type spe- cies of Tityosteus is emended. Keywords: Placodermi, marginal plate, palaeoecology, palaeozoogeography, late Zlichovian. RESUMEN Se describe una placa marginal derecha (más de 11 cm de longitud) de Tityosteus cf. rieversae Gross, 1960, emend., de la parte tardía del Emsiense Inferior (Zlichoviense tardío) de la Fm.
    [Show full text]
  • Copyrighted Material
    06_250317 part1-3.qxd 12/13/05 7:32 PM Page 15 Phylum Chordata Chordates are placed in the superphylum Deuterostomia. The possible rela- tionships of the chordates and deuterostomes to other metazoans are dis- cussed in Halanych (2004). He restricts the taxon of deuterostomes to the chordates and their proposed immediate sister group, a taxon comprising the hemichordates, echinoderms, and the wormlike Xenoturbella. The phylum Chordata has been used by most recent workers to encompass members of the subphyla Urochordata (tunicates or sea-squirts), Cephalochordata (lancelets), and Craniata (fishes, amphibians, reptiles, birds, and mammals). The Cephalochordata and Craniata form a mono- phyletic group (e.g., Cameron et al., 2000; Halanych, 2004). Much disagree- ment exists concerning the interrelationships and classification of the Chordata, and the inclusion of the urochordates as sister to the cephalochor- dates and craniates is not as broadly held as the sister-group relationship of cephalochordates and craniates (Halanych, 2004). Many excitingCOPYRIGHTED fossil finds in recent years MATERIAL reveal what the first fishes may have looked like, and these finds push the fossil record of fishes back into the early Cambrian, far further back than previously known. There is still much difference of opinion on the phylogenetic position of these new Cambrian species, and many new discoveries and changes in early fish systematics may be expected over the next decade. As noted by Halanych (2004), D.-G. (D.) Shu and collaborators have discovered fossil ascidians (e.g., Cheungkongella), cephalochordate-like yunnanozoans (Haikouella and Yunnanozoon), and jaw- less craniates (Myllokunmingia, and its junior synonym Haikouichthys) over the 15 06_250317 part1-3.qxd 12/13/05 7:32 PM Page 16 16 Fishes of the World last few years that push the origins of these three major taxa at least into the Lower Cambrian (approximately 530–540 million years ago).
    [Show full text]
  • Redescription of Yinostius Major (Arthrodira: Heterostiidae) from the Lower Devonian of China, and the Interrelationships of Brachythoraci
    bs_bs_banner Zoological Journal of the Linnean Society, 2015. With 10 figures Redescription of Yinostius major (Arthrodira: Heterostiidae) from the Lower Devonian of China, and the interrelationships of Brachythoraci YOU-AN ZHU1,2, MIN ZHU1* and JUN-QING WANG1 1Key Laboratory of Vertebrate Evolution and Human Origins of Chinese Academy of Sciences, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, Beijing 100044, China 2University of Chinese Academy of Sciences, Beijing 100049, China Received 29 December 2014; revised 21 August 2015; accepted for publication 23 August 2015 Yinosteus major is a heterostiid arthrodire (Placodermi) from the Lower Devonian Jiucheng Formation of Yunnan Province, south-western China. A detailed redescription of this taxon reveals the morphology of neurocranium and visceral side of skull roof. Yinosteus major shows typical heterostiid characters such as anterodorsally positioned small orbits and rod-like anterior lateral plates. Its neurocranium resembles those of advanced eubrachythoracids rather than basal brachythoracids, and provides new morphological aspects in heterostiids. Phylogenetic analysis based on parsimony was conducted using a revised and expanded data matrix. The analysis yields a novel sce- nario on the brachythoracid interrelationships, which assigns Heterostiidae (including Heterostius ingens and Yinosteus major) as the sister group of Dunkleosteus amblyodoratus. The resulting phylogenetic scenario suggests that eubrachythoracids underwent a rapid diversification during the Emsian, representing the placoderm response to the Devonian Nekton Revolution. The instability of the relationships between major eubrachythoracid clades might have a connection to their longer ghost lineages than previous scenarios have implied. © 2015 The Linnean Society of London, Zoological Journal of the Linnean Society, 2015 doi: 10.1111/zoj.12356 ADDITIONAL KEYWORDS: Brachythoraci – Heterostiidae – morphology – phylogeny – Placodermi.
    [Show full text]
  • The Earliest Phyllolepid (Placodermi, Arthrodira) from the Late Lochkovian (Early Devonian) of Yunnan (South China)
    Geol. Mag. 145 (2), 2008, pp. 257–278. c 2007 Cambridge University Press 257 doi:10.1017/S0016756807004207 First published online 30 November 2007 Printed in the United Kingdom The earliest phyllolepid (Placodermi, Arthrodira) from the Late Lochkovian (Early Devonian) of Yunnan (South China) V. DUPRET∗ &M.ZHU Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, P.O. Box 643, Xizhimenwai Dajie 142, Beijing 100044, People’s Republic of China (Received 1 November 2006; accepted 26 June 2007) Abstract – Gavinaspis convergens, a new genus and species of the Phyllolepida (Placodermi: Arthrodira), is described on the basis of skull remains from the Late Lochkovian (Xitun Formation, Early Devonian) of Qujing (Yunnan, South China). This new form displays a mosaic of characters of basal actinolepidoid arthrodires and more derived phyllolepids. A new hypothesis is proposed concerning the origin of the unpaired centronuchal plate of the Phyllolepida by a fusion of the paired central plates into one single dermal element and the loss of the nuchal plate. A phylogenetic analysis suggests the position of Gavinaspis gen. nov. as the sister group of the Phyllolepididae, in a distinct new family (Gavinaspididae fam. nov.). This new form suggests a possible Chinese origin for the Phyllolepida or that the common ancestor to Phyllolepida lived in an area including both South China and Gondwana, and in any case corroborates the palaeogeographic proximity between Australia and South China during the Devonian Period. Keywords: Devonian, China, Placodermi, phyllolepids, biostratigraphy, palaeobiogeography. 1. Introduction 1934). Subsequently, they were considered as either sharing an immediate common ancestor with the The Phyllolepida are a peculiar group of the Arthrodira Arthrodira (Denison, 1978), belonging to the Actin- (Placodermi), widespread in the Givetian–Famennian olepidoidei (Long, 1984), or being of indetermined of Gondwana (Australia, Antarctica, Turkey, South position within the Arthrodira (Goujet & Young,1995).
    [Show full text]
  • Vertebrata: Placodermi) from the Famennian of Belgium
    View metadata, citationGEOLOGICA and similar papers BELGICA at core.ac.uk (2005) 8/1-2: 51-67 brought to you by CORE provided by Open Marine Archive A NEW GROENLANDASPIDID ARTHRODIRE (VERTEBRATA: PLACODERMI) FROM THE FAMENNIAN OF BELGIUM Philippe JANVIER1, 2 and Gaël CLÉMENT1 1. UMR 5143 du CNRS, Département «Histoire de la Terre», Muséum National d’Histoire Naturelle, 8 rue Buff on, 75005 Paris, France. [email protected] 2. 7 e Natural History Museum, Cromwell Road, London SW7 5BD, United Kingdom (9 fi gures, 1 table and 2 plates) ABSTRACT. A new species of the arthrodire genus Groenlandaspis is described from the upper part of the Evieux Formation (Upper Famennian), based on several specimens collected from quarries at Modave and Villers-le-Temple, Liège Province, Belgium. It is the fi rst occurrence of this widespread genus in continental Europe. O is new species is characterized by an almost smooth dermal armour, except for some scattered tubercles on its skull roof, median dorsal and spinal plates. Its median dorsal plate is triangular in shape and almost perfectly equilateral in lateral aspect and bears large, spiniform denticles on its posterior edge. All these Groenlandaspis remains occur in micaceous, dolomitic claystones or siltstones probably deposited in a subtidal environment. Outcrops of the same area have yielded other vertebrate remains, such as the placoderms Phyllolepis and Bothriolepis, acanthodians, various piscine sarcopterygians (Holoptychius, dipnoans, a rhizodontid, Megalichthys, Eusthenodon and a large tristichopterid), and a tetrapod that is probably close to Ichthyostega. O e biogeographical history of the genus Groenlandaspis is briefl y outlined, and the late Frasnian-Famennian interchange of vertebrate taxa between Gondwana and Euramerica is discussed.
    [Show full text]
  • Comments on the Late Devonian Placoderms from the Holy Cross Mountains (Poland)
    Comments on the Late Devonian placoderms from the Holy Cross Mountains (Poland) ALEXANDER IVANOV andMICHAŁ GINTER Ivanov, A. & Ginter,M. 1997. Comments on the Late Devonian placoderms from the Holy Cross Mountains (Poland).- Acta Palaeontologica Polonica 4,3,4I34f6. Taxonomy of the Late Devonian placoderm remains from the Holy Cross Mountains, Poland, described by Gorizdro-Kulczycka (L934,1950) and Kulczycki (1956, 1957),is revised. Several recently found specimens are also mentioned. The old collections are composed of representatives of Ptyctodontidae, Holonematidae, Plourdosteidae, Pholi- dosteidae, Selenosteidae, Titanichthyidae and Dinichthyidae, the latter with an unde- scribed species of Eastmanosteus. Newly found specimens belong to Ptyctodontidae, Plourdosteidae and Dinichthyidae. The occurrence of the Antiarcha in the Late Devonian of the Holy Cross Mountains, suggestedby former authors, has not been confirmed. K e y w o rd s : Placodermi,Late Devonian, Holy Cross Mountains, Poland. Alexander Ivanov [[email protected]], Laboratory of Paleontology, Institute of the Earth Crust, Sankt-Petersburg University, 16 Liniya 29, 199178 St.Petersburg, Russia. Michał Ginter [email protected]], InsĘtut Geologii Podstawowej, Uniwersytet War szaw ski, ul. Zw irki i Wi gury 9 3, 02 -089 War szaw a, P oland. Introduction The main goals of this study are to revise placodermsfrom the Late Devonian of the Holy Cross Mountains collected by Jan Czarnocki, Julian Kulczycki and Zinuda Gorizdro-Kulczycka in the first half of the century (the material now housed in the Museum of the Polish Geological Instituteand in the Museum of the Earth in Warsaw), and to describe a fęw new specimenscollected recently by Jerzy Dzik and Grzegorz Racki.
    [Show full text]
  • A Primitive Megalichthyid Fish (Sarcopterygii, Tetrapodomorpha)
    A primitive megalichthyid fi sh (Sarcopterygii, Tetrapodomorpha) from the Upper Devonian of Turkey and its biogeographical implications Philippe JANVIER UMR 5143 du CNRS, Département Histoire de la Terre, Muséum national d’Histoire naturelle, case postale 38, 57 rue Cuvier, F-75231 Paris cedex 05 (France) [email protected] and Department of Palaeontology, The Natural History Museum, Cromwell Road, London SW7 5BD (United Kingdom) Gaël CLÉMENT UMR 5143 du CNRS, Département Histoire de la Terre, Muséum national d’Histoire naturelle, case postale 38, 57 rue Cuvier, F-75231 Paris cedex 05 (France) [email protected] Richard CLOUTIER Département de Biologie, Université du Québec à Rimouski, 300 allée des Ursulines, Rimouski, Québec, G5L 3A1 (Canada) [email protected] Janvier P., Clément G. & Cloutier R. 2007. — A primitive megalichthyid fi sh (Sarcopterygii, Tetrapodomorpha) from the Upper Devonian of Turkey and its biogeographical implications. Geodiversitas 29 (2) : 249-268. ABSTRACT KEY WORDS Sarcopterygii, Th e vertebrate fauna of the red sandstone of Pamucak-Sapan Dere Unit of Tetrapodomorpha, the Upper Antalya Nappe (Frasnian?, Turkey) is reviewed on the basis of new Megalichthyidae, “Osteolepiformes”, material. Th e association of the phyllolepid Placolepis with the arthrodire Holo- Devonian, nema in this fauna strongly suggests a Frasnian age or, at any rate, older than Turkey, the Famennian. Th e unique osteolepiform sarcopterygian of this fauna is here biogeography, new genus, described in detail and referred to Sengoerichthys ottoman n. gen., n. sp., which new species. is considered as the most generalized megalichthyid known to date. GEODIVERSITAS • 2007 • 29 (2) © Publications Scientifi ques du Muséum national d’Histoire naturelle, Paris.
    [Show full text]
  • Family-Group Names of Fossil Fishes
    European Journal of Taxonomy 466: 1–167 ISSN 2118-9773 https://doi.org/10.5852/ejt.2018.466 www.europeanjournaloftaxonomy.eu 2018 · Van der Laan R. This work is licensed under a Creative Commons Attribution 3.0 License. Monograph urn:lsid:zoobank.org:pub:1F74D019-D13C-426F-835A-24A9A1126C55 Family-group names of fossil fishes Richard VAN DER LAAN Grasmeent 80, 1357JJ Almere, The Netherlands. Email: [email protected] urn:lsid:zoobank.org:author:55EA63EE-63FD-49E6-A216-A6D2BEB91B82 Abstract. The family-group names of animals (superfamily, family, subfamily, supertribe, tribe and subtribe) are regulated by the International Code of Zoological Nomenclature. Particularly, the family names are very important, because they are among the most widely used of all technical animal names. A uniform name and spelling are essential for the location of information. To facilitate this, a list of family- group names for fossil fishes has been compiled. I use the concept ‘Fishes’ in the usual sense, i.e., starting with the Agnatha up to the †Osteolepidiformes. All the family-group names proposed for fossil fishes found to date are listed, together with their author(s) and year of publication. The main goal of the list is to contribute to the usage of the correct family-group names for fossil fishes with a uniform spelling and to list the author(s) and date of those names. No valid family-group name description could be located for the following family-group names currently in usage: †Brindabellaspidae, †Diabolepididae, †Dorsetichthyidae, †Erichalcidae, †Holodipteridae, †Kentuckiidae, †Lepidaspididae, †Loganelliidae and †Pituriaspididae. Keywords. Nomenclature, ICZN, Vertebrata, Agnatha, Gnathostomata.
    [Show full text]
  • Comments on Distribution and Taphonomy of Devonian Placoderms in the Holy Cross Mountains, Poland
    Comments on distribution and taphonomy of Devonian placoderms in the Holy Cross Mountains, Poland Piotr Szrek Taphonomy, stratigraphical occurrences and geographical distribution of Devonian placoderms in the Holy Cross Mountains described by former researchers is revised. Four main types of preservation states occur in the placoderm fossils of that region. Fossil preservation depends on geodynamic processes. Mechanical damage appears to be the main factor explaining the final state of preservation. For most of the previously described as well as the new specimens, the occurrences were dated biostratigraphically by palynomorphs and conodonts. The taxonomic distribution of placoderms in space and time within the Devonian strata in the Holy Cross Mountains correlates well with the Devonian nekton revolution, but it is also controlled by the regional palaeoecology and local synsedimentary tectonics of the carbonate platform. • Key words: Placodermi, Devonian, distribution, taphonomy, Holy Cross Mountains, Poland. SZREK, P. 2020. Comments on distribution and taphonomy of Devonian placoderms in the Holy Cross Mountains, Poland. Bulletin of Geosciences 95(1), 23–39 (7 figures, 2 tables). Czech Geological Survey, Prague. ISSN 1214-1119. Manuscript received June 4, 2019; accepted in revised form December 16, 2019; published online January 21, 2020; issued March 31, 2020. Piotr Szrek, Polish Geological Institute–National Research Institute, 4 Rakowiecka Street, 00-975 Warsaw, Poland; piotr. [email protected] & University of Warsaw, Faculty of Geology, Żwirki i Wigury Street 93, 02-089 Warsaw, Poland Placodermi McCoy, 1848 (armoured fishes) are a group areas. However, Kulczycki worked prior to the publication of early jawed vertebrates that appeared in the Silurian of Wegener’s theory of continental drift, resulting in some period and reached maximum diversification during the erroneous palaeogeographic conclusions, but his cor- Devonian.
    [Show full text]
  • A Redescription of Kiangyousteus Yohii (Arthrodira: Eubrachythoraci) from the Middle Devonian of China, with Remarks on the Systematics of the Eubrachythoraci
    bs_bs_banner Zoological Journal of the Linnean Society, 2013, 169, 798–819. With 11 figures A redescription of Kiangyousteus yohii (Arthrodira: Eubrachythoraci) from the Middle Devonian of China, with remarks on the systematics of the Eubrachythoraci YOU-AN ZHU1,2 and MIN ZHU1* 1Key Laboratory of Vertebrate Evolution and Human Origins of Chinese Academy of Sciences, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, Beijing 100044, China 2University of Chinese Academy of Sciences, Beijing 100049, China Received 14 June 2013; revised 6 September 2013; accepted for publication 9 September 2013 Kiangyousteus yohii Liu, 1955, is a eubrachythoracid arthrodire fish (Placodermi) from the Middle Devonian Guanwu Formation of south-western China. Although Kiangyousteus was the first arthrodire described in China, its phylogenetic position within the Eubrachythoraci remained uncertain because of a lack of diagnostic data in previous studies. A detailed redescription of this taxon reveals similarities to Dunkleosteus terrelli in the possession of transverse articular facets on the parasphenoid and the lack of adsymphyseal denticles on the anterior supragnathal. Our phylogenetic analysis assigned K. yohii to the family Dunkleosteidae, which includes Eastmanosteus calliaspis, Eastmanosteus pustulosus, Golshanichthys asiatica, Heterostius ingens, Xiangshuiosteus wui, and Dunkleosteus. The analysis also yielded several new scenarios on eubrachythoracid interrelationships, notably the sister-group relationship between
    [Show full text]
  • Fish/Tetrapod Communities in the Upper Devonian
    Fish/tetrapod Communities Examensarbete vid Institutionen för geovetenskaper in the Upper Devonian ISSN 1650-6553 Nr 301 Maxime Delgehier Fish/tetrapod Communities Vertebrate communities including tetrapods and fishes are known from a in the Upper Devonian limited number of Late Devonian localities from several areas worldwide. These localities encompass a wide variety of environments, from true marine conditions of the near shore neritic province, to fluvial or lacustrine conditions. These localities form the foundation for a number of data matrices from which three different sets of cluster analyses were made. The first set practices a strait forward taxonomical framework using present/absent data on species and genus level to test similarity between the various localities. The second set of analyses builds on the Maxime Delgehier first one with the integration of artificial hierarchies to compensate taxonomical biases and instead infer relationship. The third also builds on the previous ones, but integrates morphological data as indicators of relationships between taxa. From this, a critical review was made for each method which comes to the conclusion that the first analysis and the first artificial level of the second analysis provide the distinctions between Frasnian and Frasnian/Famennian locality whereas the second artificial level of the second analysis and the third analysis need to be improved. Uppsala universitet, Institutionen för geovetenskaper Examensarbete D/E1/E2/E, Geologi/Hydrologi/Naturgeografi /Paleobiologi, 15/30/45
    [Show full text]