DOCSLIB.ORG

New and Poorly Known Perisphinctoidea (Ammonitina) from the Upper Tithonian of Le Chouet (Drôme, SE France)

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
New and Poorly Known Perisphinctoidea (Ammonitina) from the Upper Tithonian of Le Chouet (Drôme, SE France) Volumina Jurassica, 2014, Xii (1): 113–128 New and poorly known Perisphinctoidea (Ammonitina) from the Upper Tithonian of Le Chouet (Drôme, SE France) Luc G. BULOT1, Camille FRAU2, William A.P. WIMBLEDON3 Key words: Ammonoidea, Ataxioceratidae, Himalayitidae, Neocomitidae, Upper Tithonian, Le Chouet, South-East France. Abstract. The aim of this paper is to document the ammonite fauna of the upper part of the Late Tithonian collected at the key section of Le Chouet (Drôme, SE France). Emphasis is laid on new and poorly known Ataxioceratidae, Himalayitidae and Neocomitidae from the upper part of the Tithonian. Among the Ataxioceratidae, a new account on the taxonomy and relationship between Paraulacosphinctes Schindewolf and Moravisphinctes Tavera is presented. Regarding the Himalayitidae, the range and content of Micracanthoceras Spath is discussed and two new genera are introduced: Ardesciella gen. nov., for a group of Mediterranean ammonites that is homoeomorphic with the Andean genus Corongoceras Spath, and Pratumidiscus gen. nov. for a specimen that shows morphological similarities with the Boreal genera Riasanites Spath and Riasanella Mitta. Finally, the occurrence of Neocomitidae in the uppermost Tithonian is documented by the presence of the reputedly Berriasian genera Busnardoiceras Tavera and Pseudargentiniceras Spath. INTRODUCTION known Perisphinctoidea from the Upper Tithonian of this reference section. Additional data on the Himalayitidae in- The unique character of the ammonite fauna of Le Chouet cluding the description and discussion of Boughdiriella (near Les Près, Drôme, France) (Fig. 1) has already been chouetensis gen. nov. sp. nov. are to be published elsewhere outlined by Le Hégarat (1973), but, so far, only a handful of (Frau et al., 2014). specimens have been illustrated by Enay et al. (1998a, fig. 2). In recent years, new fieldwork has allowed us to sam- ple the Chouet section bed by bed and to collect over 400 GEOLOGICAL SETTING new specimens. A preliminary account on the ammonite dis- tribution across the Tithonian-Berriasian boundary was pub- A detailed geological description of the Le Chouet sec- lished by Wimbledon et al. (2013), but in that paper we did tion, including lithostratigraphy, sedimentology, bio strati- not illustrate the fauna. The aim of the present contribution graphy (calpionellids, calcareous nannofossils and ammo- is to document the taxonomy and illustrate new and poorly nites) and magnetostratigraphy has been published by 1 Aix-Marseille Université, UMR-CNRS 7330 CEREGE, Centre Saint-Charles, case 67, 3 place Victor Hugo, 13331 Marseille cedex 03, France; e-mail: [email protected] 2 9bis, Chemin des Poissonniers, 13600 La Ciotat, France 3 School of Earth Sciences, University of Bristol, Queens Road, Bristol BS8 1RJ, United Kingdom 114 Luc G. Bulot et al. Paris Rhône N 0 250 km Marseille Valence 1000 Ardèche 900 1000 Die Le Chouet Luc en Diois 800 Montélimar 700 Hautes- 900 Nyons Alpes 800 0 200 m Vaucluse Alpes-de-Haute- Provence Fig. 1. Locality map of Le Chouet (Les Près, Drôme, SE France) The studied section is marked by a black line Wim bledon et al. (2013). A revised version of the ammonite SYSTEMATIC PALAEONTOLOGY distribution is presented herein (Fig. 2), as a contribution to- ward the integrated stratigraphic scheme of Wimbledon et al. (2013). From bottom to top, three biostratigraphic units At the suprageneric level, the taxonomy adopted herein can be recognized: the upper part of the Micracanthoceras is conservative and follows the classification proposed by microcanthum (= Microcanthum) Zone [Moravisphinctes fis­ Cecca et al. (1989) for the Ataxioceratidae; Tavera (1985) cheri (= Fischeri) Subzone], the Protacanthodiscus andreaei for the Himalayitidae and Wright et al. (1996) for the Neo- (= Andreaei) Zone (as a replacement for the Durangites spp. comitidae. As already pointed out by Donovan et al. (1981), Zone of the literature) and the lower part of the Berriasella ja­ Company (1987) and Cecca et al. (1989), the systematics of cobi (= Jacobi) Zone (sensu Hoedemaeker, Bulot, 1990). these families are in a state of chaos and the understanding The minor discrepancies between figure 12 in Wimble- of their phylogenetic relationships is still at a very prelimi- don et al. (2013) and Figure 2 of this paper concern the dis- nary stage. Unfortunately, the material at our disposal is tribution of Micracanthoceras Spath, 1925 and the occur- not yet sufficient for further considerations of these wider rence of supposed Boreal ammonites reported by Wimbledon issues. et al. (2013, p. 451). The range of Micracanthoceras will be discussed below. The reported occurrence of Boreal ammo- nites was based on the identification of ?Praetollia sp. (a single specimen of complex interpretation whose identity with true Praetollia Spath from Greenland is highly doubt- Fig. 2. Integrated stratigraphy and distribution of the Ancyloceratina ful) and ?Riasanites sp. (herein reinterpreted as Pratumidis­ and Ammonitina around the Tithonian-Berriasian boundary at Le Chouet cus elsae gen. nov. sp. nov.). modified after Wimbledon et al. (2013) New and poorly known Perisphinctoidea (Ammonitina) from the Upper Tithonian of Le Chouet (Drôme, SE France) 115 Calpionellids Magnetostrat. Ammonites Le Chouet 123 33 122 32 121 120 31 119 118 117 30 116 115 114 113 29 112 111 110 109 28 108 Calpionella Zone 107 106 Calpionella alpina (B) Sz. 105 27 104 Dalmasiceras djanelidzei 103 N2 102 26 M19n 101 Dalmasiceras biplanum 100 99 25 98 Jacobi Zone 24 97 96 95 23 94 Dalmasiceras sublaevis 93 92 22 bicostatum 91 microcanthum crassicostatum aff. 90 pseudogroteanum cf. 21 89 88 C. colomi (A3) Sz. 87 20 gr. sp. juv. 86 spp. 85 spp. Spiticeras 84 19 Dalmasiceras Protancycloceras Protancycloceras sp. sp. M19r Spiticeratinae juv. 83 Berriasella 18 Berriasella subcalisto 82 Dalmasiceras rhodanica Pseudoneocomites retowskyi Micracanthoceras 81 Andreaei Zone macrotelum 80 “Mazenoticeras”tarini sp. 79 Bochianites 17 cf. 78 ? Elenaella cularensis 7677 aff. 75 sp. 74 sp. 73 Protancycloceras 72 16 andreaei Himalayitidae sp. indet. “Berriasella” tithonica Crassicollaria Zone gr. gr. gen. nov. sp. nov. gen. nov. Ardesciella Ardesciella Protacanthodiscus hexagonus Protacanthodiscus 71 15 Dalmasiceras Cyrtosiceras Proniceras gen. nov. sp. nov. gen. nov. Toucasiella gerardi Toucasiella 14 busnardoi Busnardoiceras 70 C. intermedia (A2) Sz. 69 Pseudargenticeras 68 ? 67 M. fischeri Subzone 66 13 65 Protacanthodiscus Protacanthodiscus Pratumidiscus elsae 12 M20n.1n 64 N1 senoides 63 11 62 61 60 Boughdiriella chouetensis 59 58 Micracanthoceras microcanthum Zone 10 57 5655 5453 remanei (A1) Sz. T. 52 9 Moravisphinctes fischeri 51 Paraulacosphinctes 50 8 4948 ? 47 46 116 Luc G. Bulot et al. Conventions: Preservation of our specimens as crushed Material. – MPP-CHT.2/1, MPP-CHT.4/2, MPP-CHT.9/7, internal moulds prevents us from giving other measure- MPP-CHT.12/6, MPP-CHT.12/9, MPP-CHT.12/19, MPP-CHT. ments than Dmax = larger measurable diameter and U/D ra- 12/25, MPP-CHT.12/26, MPP-CHT.12/29, MPP-CHT.12/30, tio (umbilical dimension as a percentage of the diameter at MPP-CHT.12/32, MPP-CHT.14/10, MPP-CHT.15/13, MPP- the point of measurement). CHT.15/15, MPP-CHT.15/17. Unless otherwise mentioned, all specimens are deposited Description. – Middle-sized planulate ammonites (Dmax in the Frau/Bulot collection at the Musée Paléontologique <50 mm) that show rapid growth of the whorl height de Provence (MPP) of Aix-Marseille University (Saint- throughout ontogeny. The whorl section is suboval with Charles), France. convex flanks. Moderately open (0.30 < U/D < 0.33) and relatively deep umbilicus with poorly marked umbilical Order Ammonoidea Zittel, 1884 wall. The ornamentation is mainly composed of fine and dense bifurcate ribs. The bifurcation occurs at, or just above, Suborder Ammonitina Hyatt, 1889 the middle of the flank. On the inner whorls, the ribs are in- Superfamily Perisphinctoidea Steinmann, 1890 terrupted on the venter by a smooth ventral band. On the body chamber, the ribs cross the venter, and several speci- Family Ataxioceratidae Buckman, 1921 mens exhibit a more complicated rib pattern with low bifur- Subfamily Lithacoceratinae Zeiss, 1968 cations and irregular intercalatories (Fig. 3A). Remarks. – Our material matches well the type series il- Genus Paraulacosphinctes Schindewolf, 1925 lustrated by Tavera (1985), with special reference to the specimens of pl. 13: 2, 5. Type species: Ammonites senex Oppel in Zittel, 1868; by subse- P. senex differs from P. senoides in its larger adult size, quent designation of Sapunov (1979, p. 126). wider umbilicus and complete loss of ornamentation on the Remarks. – In its original conception, the genus Paraula­ later ontogenic stages. According to Cecca et al. (1989, p. cosphintes was based on perisphinctids with a ventral groove 59), there is no difference between the two species and the from the classical Tithonian localities around Stramberg (= loss of the ornamentation in P. senex would be an adult char- Štramberk, Czech Republic). Tavera (1985) considerably ex- acter not seen in P. senoides because that taxon is based on panded the definition of the genus by the introduction of twelve incomplete specimens. This view is not supported by our new typological species and of four allied genera (Zittelia Ta- material, which does not show any fading of the ornamenta- vera, 1985, Neoperisphinctes Tavera, 1985, Moravisphinctes tion on the adult body chamber. It should be noted also that Tavera, 1985
Load more

Recommended publications
  • Cryptoclidid Plesiosaurs (Sauropterygia, Plesiosauria) from the Upper Jurassic of the Atacama Desert
    Journal of Vertebrate Paleontology ISSN: (Print) (Online) Journal homepage: https://www.tandfonline.com/loi/ujvp20 Cryptoclidid plesiosaurs (Sauropterygia, Plesiosauria) from the Upper Jurassic of the Atacama Desert Rodrigo A. Otero , Jhonatan Alarcón-Muñoz , Sergio Soto-Acuña , Jennyfer Rojas , Osvaldo Rojas & Héctor Ortíz To cite this article: Rodrigo A. Otero , Jhonatan Alarcón-Muñoz , Sergio Soto-Acuña , Jennyfer Rojas , Osvaldo Rojas & Héctor Ortíz (2020): Cryptoclidid plesiosaurs (Sauropterygia, Plesiosauria) from the Upper Jurassic of the Atacama Desert, Journal of Vertebrate Paleontology, DOI: 10.1080/02724634.2020.1764573 To link to this article: https://doi.org/10.1080/02724634.2020.1764573 View supplementary material Published online: 17 Jul 2020. Submit your article to this journal Article views: 153 View related articles View Crossmark data Full Terms & Conditions of access and use can be found at https://www.tandfonline.com/action/journalInformation?journalCode=ujvp20 Journal of Vertebrate Paleontology e1764573 (14 pages) © by the Society of Vertebrate Paleontology DOI: 10.1080/02724634.2020.1764573 ARTICLE CRYPTOCLIDID PLESIOSAURS (SAUROPTERYGIA, PLESIOSAURIA) FROM THE UPPER JURASSIC OF THE ATACAMA DESERT RODRIGO A. OTERO,*,1,2,3 JHONATAN ALARCÓN-MUÑOZ,1 SERGIO SOTO-ACUÑA,1 JENNYFER ROJAS,3 OSVALDO ROJAS,3 and HÉCTOR ORTÍZ4 1Red Paleontológica Universidad de Chile, Laboratorio de Ontogenia y Filogenia, Departamento de Biología, Facultad de Ciencias, Universidad de Chile, Las Palmeras 3425, Santiago, Chile, [email protected]; 2Consultora Paleosuchus Ltda., Huelén 165, Oficina C, Providencia, Santiago, Chile; 3Museo de Historia Natural y Cultural del Desierto de Atacama. Interior Parque El Loa s/n, Calama, Región de Antofagasta, Chile; 4Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción, Barrio Universitario, Concepción, Región del Bío Bío, Chile ABSTRACT—This study presents the first plesiosaurs recovered from the Jurassic of the Atacama Desert that are informative at the genus level.
    [Show full text]
  • Xenosphinctes N. Gen. (Ataxioceratidae, Lithacoceratinae), a New Rare Ammonite Genus from the Lower Tithonian (Hybonotum Zone) of SW Germany
    VOLUMINA JURASSICA, 2017, XV: 155–160 DOI: 10.5604/01.3001.0010.7170 Xenosphinctes n. gen. (Ataxioceratidae, Lithacoceratinae), a new rare ammonite genus from the Lower Tithonian (Hybonotum Zone) of SW Germany Armin SCHERZINGER1, Günter SCHWEIGERT2 Key words: ammonites, Xenosphinctes berkai, Early Tithonian, biostratigraphy, Germany. Abstract. The new monotypic ammonite genus Xenosphinctes (type species: Xenosphinctes berkai n. sp.) is established. It is recorded from the Upper Jurassic, Early Tithonian, Hybonotum Zone, Riedense Subzone, eigeltingense α horizon from the Talmühle, N of Engen, Baden-Württemberg, SW Germany. INTRODUCTION AMMONITE FAUNA OF THE EIGELTINGENSE α HORIZON The Hangende-Bankkalke Formation is the youngest formation in the Upper Jurassic of Swabia. Its base is usual- The first comprehensive review of ammonites from the ly formed by an unconformity with a marked change in li- uppermost Jurassic in Swabia was provided by Berckhemer thology from coarse-grained bioclastic limestones or marl- & Hölder (1959). However, therein the focus was on the am- stones to pure mudstones (Schweigert, 1996). Its type monite fauna of the Late Kimmeridgian Beckeri Zone, and locality is an abandoned limestone quarry near the village of only very few taxa from higher levels have been reported. Eigeltingen, and its base is best exposed in a nearby section Ohmert & Zeiss (1980) started with a description of the am- along a railroad cut, NW of the Talmühle hamlet (Fig. 1). monite fauna of the Hangende-Bankkalke Formation in the The most abundant macrofossils in these basal parts of the western part of the Swabian Alb. On that occasion several formation are ammonites. Many of them are fragmented due important taxa from the basal part of this formation which to predation, but some of them are quite well-preserved as are typical of the former eigeltingense horizon were intro- steinkerns with superimposed sculpture of the outer shell.
    [Show full text]
  • Upper Jurassicelower Cretaceous Stratigraphy in South-Eastern Tibet: a Comparison with the Western Himalayas
    Author's personal copy Cretaceous Research 29 (2008) 301e315 www.elsevier.com/locate/CretRes Upper JurassiceLower Cretaceous stratigraphy in south-eastern Tibet: a comparison with the western Himalayas Xiumian Hu a,*, Luba Jansa b, Chengshan Wang c a State Key Laboratory of Mineral Deposits Research, Department of Earth Sciences, Nanjing University, Nanjing 210093, China b Department of Earth Sciences, Dalhousie University, Halifax B3H 3J5, Canada c Geological Centre for Tibetan Plateau, China University of Geosciences, Beijing 100083, P.R. China Received 24 January 2007; accepted in revised form 14 May 2007 Available online 28 November 2007 Abstract Lithostratigraphic studies of the Upper JurassiceLower Cretaceous sedimentary successions exposed in the TingrieGyangze area, south- eastern Tibet resulted in the establishment of a revised stratigraphic framework. A major crustal fault separates the southern Tibetan sedimentary successions into a Southern Zone and a Northern Zone. The Upper JurassiceLower Cretaceous strata of the Southern Zone are subdivided into the Menkadun Formation (Oxfordian, Kimmeridgian, up to lower Upper Tithonian), the Gucuo Formation (Upper Tithonian to Lower Albian) and the overlying Dongshan Formation (Upper Albian). The Gucuo Formation is further subdivided into a quartz arenite unit, which is overlain by a shale unit, in turn overlain by a volcaniclastic sandstone unit. The youngest cluster of detrital zircon absolute age data (127.7 Æ 1.8 Ma) from the lower part of the volcaniclastic unit of the Gucuo Formation place the volcanic event before the Late Barremian. In the Northern Zone, the Upper JurassiceLower Cretaceous strata have been subdivided into four formations: the Zhera Formation (Upper Jurassic), the Weimei Formation (Tithonian), the Rilang Formation (?Berriasian) and the Gyabula Formation (? post-Valanginian).
    [Show full text]
  • Abelisaurus Comahuensis 321 Acanthodiscus Sp. 60, 64
    Index Page numbers in italic denote figure. Page numbers in bold denote tables. Abelisaurus comahuensis 321 structure 45-50 Acanthodiscus sp. 60, 64 Andean Fold and Thrust Belt 37-53 Acantholissonia gerthi 61 tectonic evolution 50-53 aeolian facies tectonic framework 39 Huitrin Formation 145, 151-152, 157 Andes, Neuqu6n 2, 3, 5, 6 Troncoso Member 163-164, 167, 168 morphostructural units 38 aeolian systems, flooded 168, 169, 170, 172, stratigraphy 40 174-182 tectonic evolution, 15-32, 37-39, 51 Aeolosaurus 318 interaction with Neuqu6n Basin 29-30 Aetostreon 200, 305 Andes, topography 37 Afropollis 76 Andesaurus delgadoi 318, 320 Agrio Fold and Thrust Belt 3, 16, 18, 29, 30 andesite 21, 23, 26, 42, 44 development 41 anoxia see dysoxia-anoxia stratigraphy 39-40, 40, 42 Aphrodina 199 structure 39, 42-44, 47 Aphrodina quintucoensis 302 uplift Late Cretaceous 43-44 Aptea notialis 75 Agrio Formation Araucariacites australis 74, 75, 76 ammonite biostratigraphy 58, 61, 63, 65, 66, Araucarioxylon 95,273-276 67 arc morphostructural units 38 bedding cycles 232, 234-247 Arenicolites 193, 196 calcareous nannofossil biostratigraphy 68, 71, Argentiniceras noduliferum 62 72 biozone 58, 61 highstand systems tract 154 Asteriacites 90, 91,270 lithofacies 295,296, 297, 298-302 Asterosoma 86 92 marine facies 142-143, 144, 153 Auca Mahuida volcano 25, 30 organic facies 251-263 Aucasaurus garridoi 321 palaeoecology 310, 311,312 Auquilco evaporites 42 palaeoenvironment 309- 310, 311, Avil6 Member 141,253, 298 312-313 ammonites 66 palynomorph biostratigraphy 74,
    [Show full text]
  • A Review of the Classification of Jurassic Aspidoceratid Ammonites – the Superfamily Aspidoceratoidea
    VOLUMINA JURASSICA, 2020, XVIII (1): 47–52 DOI: 10.7306/VJ.18.4 A review of the classification of Jurassic aspidoceratid ammonites – the Superfamily Aspidoceratoidea Horacio PARENT1, Günter SCHWEIGERT2, Armin SCHERZINGER3 Key words: Superfamily Aspidoceratoidea, Aspidoceratidae, Epipeltoceratinae emended, Peltoceratidae, Gregoryceratinae nov. subfam. Abstract. The aspidoceratid ammonites have been traditionally included in the superfamily Perisphinctoidea. However, the basis of this is unclear for they bear unique combinations of characters unknown in typical perisphinctoids: (1) the distinct laevaptychus, (2) stout shells with high growth rate of the whorl section area, (3) prominent ornamentation with tubercles, spines and strong growth lines running in parallel over strong ribs, (4) lack of constrictions, (5) short to very short bodychamber, and (6) sexual dimorphism characterized by minia- turized microconchs and small-sized macroconchs besides the larger ones, including changes of sex during ontogeny in many cases. Considering the uniqueness of these characters we propose herein to raise the family Aspidoceratidae to the rank of a superfamily Aspi- doceratoidea, ranging from the earliest Late Callovian to the Early Berriasian Jacobi Zone. The new superfamily includes two families, Aspidoceratidae (Aspidoceratinae, Euaspidoceratinae, Epipeltoceratinae and Hybonoticeratinae), and Peltoceratidae (Peltoceratinae and Gregoryceratinae nov. subfam.). The highly differentiated features of the aspidoceratoids indicate that their life-histories
    [Show full text]
  • Vertebrate Remains Are Relatively Well Known in Late Jurassic Deposits of Western Cuba. the Fossil Specimens That Have Been Coll
    Paleontología Mexicana, 3 (65): 24-39 (versión impresa), 4: 24-39 (versión electrónica) Catalogue of late jurassiC VerteBrate (pisCes, reptilian) speCiMens froM western CuBa Manuel Iturralde-Vinent ¹, *, Yasmani Ceballos Izquierdo ² A BSTRACT Vertebrate remains are relatively well known in Late Jurassic deposits of western Cuba. The fossil specimens that have been collected so far are dispersed in museum collections around the world and some have been lost throughout the years. A reas- sessment of the fossil material stored in some of these museums’ collections has generated new data about the fossil-bearing lo- calities and greatly increased the number of formally identified specimens. The identified bone elements and taxa suggest a high vertebrate diversity dominated by actinopterygians and reptiles, including: long-necked plesiosaurs, pliosaurs, metriorhynchid crocodilians, pleurodiran turtles, ichthyosaurs, pterosaurs, and sauropod dinosaurs. This assemblage is commonly associated with unidentified remains of terrestrial plants and rare microor- ganisms, as well as numerous marine invertebrates such as am- monites, belemnites, pelecypods, brachiopods, and ostracods. This fossil assemblage is particularly valuable because it includes the most complete marine reptile record of a chronostratigraphic interval, which is poor in vertebrate remains elsewhere. In this contribution, the current status of the available vertebrate fossil specimens from the Late Jurassic of western Cuba is provided, along with a brief description of the fossil materials. Key words: Late Jurassic, Oxfordian, dinosaur, marine reptiles, fish, western Cuba. I NTRODUCTION Since the early 20th century, different groups of collectors have discovered 1 Retired curator, Museo a relatively rich and diverse vertebrate assemblage in the Late Jurassic stra- Nacional de Historia Natural, ta of western Cuba, which has been only partially investigated (Brown and Havana, Cuba.
    [Show full text]
  • First Record of Non-Mineralized Cephalopod Jaws and Arm Hooks
    Klug et al. Swiss J Palaeontol (2020) 139:9 https://doi.org/10.1186/s13358-020-00210-y Swiss Journal of Palaeontology RESEARCH ARTICLE Open Access First record of non-mineralized cephalopod jaws and arm hooks from the latest Cretaceous of Eurytania, Greece Christian Klug1* , Donald Davesne2,3, Dirk Fuchs4 and Thodoris Argyriou5 Abstract Due to the lower fossilization potential of chitin, non-mineralized cephalopod jaws and arm hooks are much more rarely preserved as fossils than the calcitic lower jaws of ammonites or the calcitized jaw apparatuses of nautilids. Here, we report such non-mineralized fossil jaws and arm hooks from pelagic marly limestones of continental Greece. Two of the specimens lie on the same slab and are assigned to the Ammonitina; they represent upper jaws of the aptychus type, which is corroborated by fnds of aptychi. Additionally, one intermediate type and one anaptychus type are documented here. The morphology of all ammonite jaws suggest a desmoceratoid afnity. The other jaws are identifed as coleoid jaws. They share the overall U-shape and proportions of the outer and inner lamellae with Jurassic lower jaws of Trachyteuthis (Teudopseina). We also document the frst belemnoid arm hooks from the Tethyan Maastrichtian. The fossils described here document the presence of a typical Mesozoic cephalopod assemblage until the end of the Cretaceous in the eastern Tethys. Keywords: Cephalopoda, Ammonoidea, Desmoceratoidea, Coleoidea, Maastrichtian, Taphonomy Introduction as jaws, arm hooks, and radulae are occasionally found Fossil cephalopods are mainly known from preserved (Matern 1931; Mapes 1987; Fuchs 2006a; Landman et al. mineralized parts such as aragonitic phragmocones 2010; Kruta et al.
    [Show full text]
  • Stratigraphic Constraints on the Late Jurassic–Cretaceous Paleotectonic Interpretations of the Placetas Belt in Cuba, in C
    Pszczo´łkowski, A., and R. Myczyn´ ski, 2003, Stratigraphic constraints on the Late Jurassic–Cretaceous paleotectonic interpretations of the Placetas belt in Cuba, in C. Bartolini, R. T. Buffler, and J. Blickwede, eds., The Circum-Gulf of Mexico and the Caribbean: Hydrocarbon habitats, basin 25 formation, and plate tectonics: AAPG Memoir 79, p. 545–581. Stratigraphic Constraints on the Late Jurassic–Cretaceous Paleotectonic Interpretations of the Placetas Belt in Cuba Andrzej Pszczo´łkowski Institute of Geological Sciences, Polish Academy of Sciences, Warszawa, Poland Ryszard Myczyn´ski Institute of Geological Sciences, Polish Academy of Sciences, Warszawa, Poland ABSTRACT he Placetas belt in north-central Cuba consists of Late Jurassic–Cretaceous rocks that were highly deformed during the Paleocene to middle Eocene T arc-continent collision. The Late Proterozoic marble and Middle Jurassic granite are covered by the shallow-marine arkosic clastic rocks of late Middle Jurassic(?) or earliest Late Jurassic(?) ages. These arkosic rocks may be older than the transgressive arkosic deposits of the Late Jurassic–earliest Cretaceous Con- stancia Formation. The Berriasian age of the upper part of the Constancia For- mation in some outcrops at Sierra Morena and in the Jarahueca area does not confirm the Late Jurassic (pre-Tithonian) age of all deposits of this unit in the Placetas belt. The Tithonian and Berriasian ammonite assemblages are similar in the Placetas belt of north-central Cuba and the Guaniguanico successions in western Cuba. We conclude that in all paleotectonic interpretations, the Placetas, Camajuanı´, and Guaniguanico stratigraphic successions should be considered as biogeographically and paleogeographically coupled during the Tithonian and the entire Cretaceous.
    [Show full text]
  • Jurassic-Cretaceous Tectonic and Depositional Evolution of the Forearc
    International Geology Review ISSN: 0020-6814 (Print) 1938-2839 (Online) Journal homepage: https://tandfonline.com/loi/tigr20 The Byers Basin: Jurassic-Cretaceous tectonic and depositional evolution of the forearc deposits of the South Shetland Islands and its implications for the northern Antarctic Peninsula Joaquin Bastias, Mauricio Calderón, Lea Israel, Francisco Hervé, Richard Spikings, Robert Pankhurst, Paula Castillo, Mark Fanning & Raúl Ugalde To cite this article: Joaquin Bastias, Mauricio Calderón, Lea Israel, Francisco Hervé, Richard Spikings, Robert Pankhurst, Paula Castillo, Mark Fanning & Raúl Ugalde (2019): The Byers Basin: Jurassic-Cretaceous tectonic and depositional evolution of the forearc deposits of the South Shetland Islands and its implications for the northern Antarctic Peninsula, International Geology Review, DOI: 10.1080/00206814.2019.1655669 To link to this article: https://doi.org/10.1080/00206814.2019.1655669 View supplementary material Published online: 21 Aug 2019. Submit your article to this journal View related articles View Crossmark data Full Terms & Conditions of access and use can be found at https://tandfonline.com/action/journalInformation?journalCode=tigr20 INTERNATIONAL GEOLOGY REVIEW https://doi.org/10.1080/00206814.2019.1655669 ARTICLE The Byers Basin: Jurassic-Cretaceous tectonic and depositional evolution of the forearc deposits of the South Shetland Islands and its implications for the northern Antarctic Peninsula Joaquin Bastias a,b, Mauricio Calderónc, Lea Israela, Francisco Hervéa,c, Richard
    [Show full text]
  • Revisión De Los Ammonoideos Del Lías Español Depositados En El Museo Geominero (ITGE, Madrid)
    Boletín Geológico y Minero. Vol. 107-2 Año 1996 (103-124) El Instituto Tecnológico Geominero de España hace presente que las opiniones y hechos con­ signados en sus publicaciones son de la exclusi­ GEOLOGIA va responsabilidad de los autores de los trabajos. Revisión de los Ammonoideos del Lías español depositados en el Museo Geominero (ITGE, Madrid). Por J. BERNAD (*) y G. MARTINEZ. (**) RESUMEN Se revisan desde el punto de vista taxonómico, los fósiles de ammonoideos correspondientes al Lías español que se encuentran depositados en el Museo Geominero. La colección está compuesta por ejemplares procedentes de 67 localida­ des españolas, pertenecientes a colecciones de diferentes autores. Se identifican los ordenes Phylloceratina, Lytoceratina y Ammonitina, las familias Phylloceratidae, Echioceratidae, eoderoceratidae, Liparoceratidae, Amaltheidae, Dactyliocerati­ Los derechos de propiedad de los trabajos dae, Hildoceratidae y Hammatoceratidae y las subfamilias Xipheroceratinae, Arieticeratinae, Harpoceratinae, Hildocerati­ publicados en esta obra fueron cedidos por nae, Grammoceratinae, Phymatoceratinae y Hammatoceratinae correspondientes a los pisos Sinemuriense, Pliensbachien­ los autores al Instituto Tecnológico Geomi­ se y Toarciense. nero de España Oueda hecho el depósito que marca la ley. Palabras clave: Ammonoidea, Taxonomía, Lías, España, Museo Geominero. ABSTRACT The Spanish Liassic ammonoidea fossil collections of the Geominero Museum is revised under a taxonomic point of view. The collection includes specimens from 67 Spanish
    [Show full text]
  • Palaeoecology and Palaeoenvironments of the Middle Jurassic to Lowermost Cretaceous Agardhfjellet Formation (Bathonian–Ryazanian), Spitsbergen, Svalbard
    NORWEGIAN JOURNAL OF GEOLOGY Vol 99 Nr. 1 https://dx.doi.org/10.17850/njg99-1-02 Palaeoecology and palaeoenvironments of the Middle Jurassic to lowermost Cretaceous Agardhfjellet Formation (Bathonian–Ryazanian), Spitsbergen, Svalbard Maayke J. Koevoets1, Øyvind Hammer1 & Crispin T.S. Little2 1Natural History Museum, University of Oslo, P.O. Box 1172 Blindern, 0318 Oslo, Norway. 2School of Earth and Environment, University of Leeds, Leeds LS2 9JT, United Kingdom. E-mail corresponding author (Maayke J. Koevoets): [email protected] We describe the invertebrate assemblages in the Middle Jurassic to lowermost Cretaceous of the Agardhfjellet Formation present in the DH2 rock-core material of Central Spitsbergen (Svalbard). Previous studies of the Agardhfjellet Formation do not accurately reflect the distribution of invertebrates throughout the unit as they were limited to sampling discontinuous intervals at outcrop. The rock-core material shows the benthic bivalve fauna to reflect dysoxic, but not anoxic environments for the Oxfordian–Lower Kimmeridgian interval with sporadic monospecific assemblages of epifaunal bivalves, and more favourable conditions in the Volgian, with major increases in abundance and diversity of Hartwellia sp. assemblages. Overall, the new information from cores shows that abundance, diversity and stratigraphic continuity of the fossil record in the Upper Jurassic of Spitsbergen are considerably higher than indicated in outcrop studies. The inferred life positions and feeding habits of the benthic fauna refine our understanding of the depositional environments of the Agardhfjellet Formation. The pattern of occurrence of the bivalve genera is correlated with published studies of Arctic localities in East Greenland and northern Siberia and shows similarities in palaeoecology with the former but not the latter.
    [Show full text]
  • Contributions in BIOLOGY and GEOLOGY
    MILWAUKEE PUBLIC MUSEUM Contributions In BIOLOGY and GEOLOGY Number 51 November 29, 1982 A Compendium of Fossil Marine Families J. John Sepkoski, Jr. MILWAUKEE PUBLIC MUSEUM Contributions in BIOLOGY and GEOLOGY Number 51 November 29, 1982 A COMPENDIUM OF FOSSIL MARINE FAMILIES J. JOHN SEPKOSKI, JR. Department of the Geophysical Sciences University of Chicago REVIEWERS FOR THIS PUBLICATION: Robert Gernant, University of Wisconsin-Milwaukee David M. Raup, Field Museum of Natural History Frederick R. Schram, San Diego Natural History Museum Peter M. Sheehan, Milwaukee Public Museum ISBN 0-893260-081-9 Milwaukee Public Museum Press Published by the Order of the Board of Trustees CONTENTS Abstract ---- ---------- -- - ----------------------- 2 Introduction -- --- -- ------ - - - ------- - ----------- - - - 2 Compendium ----------------------------- -- ------ 6 Protozoa ----- - ------- - - - -- -- - -------- - ------ - 6 Porifera------------- --- ---------------------- 9 Archaeocyatha -- - ------ - ------ - - -- ---------- - - - - 14 Coelenterata -- - -- --- -- - - -- - - - - -- - -- - -- - - -- -- - -- 17 Platyhelminthes - - -- - - - -- - - -- - -- - -- - -- -- --- - - - - - - 24 Rhynchocoela - ---- - - - - ---- --- ---- - - ----------- - 24 Priapulida ------ ---- - - - - -- - - -- - ------ - -- ------ 24 Nematoda - -- - --- --- -- - -- --- - -- --- ---- -- - - -- -- 24 Mollusca ------------- --- --------------- ------ 24 Sipunculida ---------- --- ------------ ---- -- --- - 46 Echiurida ------ - --- - - - - - --- --- - -- --- - -- - - ---
    [Show full text]