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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.
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  • Family-Group Names of Fossil Fishes

    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.
  • 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

    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.
  • A Redescription of Kiangyousteus Yohii (Arthrodira: Eubrachythoraci) from the Middle Devonian of China, with Remarks on the Systematics of the Eubrachythoraci

    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
  • Fish/Tetrapod Communities in the Upper Devonian

    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