[en] Background: Ichthyosaurs are reptiles that inhabited the marine realm during most of the Mesozoic. Their Cretaceous representatives have traditionally been considered as the last survivors of a group declining since the Jurassic. Recently, however, an unexpected diversity has been described in Upper Jurassic–Lower Cretaceous deposits, but is widely spread across time and space, giving small clues on the adaptive potential and ecosystem control of the last ichthyosaurs. The famous but little studied English Gault Formation and ‘greensands’ deposits (the Upper Greensand Formation and the Cambridge Greensand Member of the Lower Chalk Formation) offer an unprecedented opportunity to investigate this topic, containing thousands of ichthyosaur remains spanning the Early–Late Cretaceous boundary.
Methodology/Principal findings: To assess the diversity of the ichthyosaur assemblage from these sedimentary bodies, we recognized morphotypes within each type of bones. We grouped these morphotypes together, when possible, by using articulated specimens from the same formations and from new localities in the Vocontian Basin (France); a revised taxonomic scheme is proposed. We recognize the following taxa in the ‘greensands’: the platypterygiines ‘Platypterygius’ sp. and Sisteronia seeleyi gen. et sp. nov., indeterminate ophthalmosaurines and the rare incertae sedis Cetarthrosaurus walkeri. The taxonomic diversity of late Albian ichthyosaurs now matches that of older, well-known intervals such as the Toarcian or the Tithonian. Contrasting tooth shapes and wear patterns suggest that these ichthyosaurs colonized three distinct feeding guilds, despite the presence of numerous plesiosaur taxa.
Conclusion/Significance: Western Europe was a diversity hot-spot for ichthyosaurs a few million years prior to their final extinction. By contrast, the low diversity in Australia and U.S.A. suggests strong geographical disparities in the diversity pattern of Albian–early Cenomanian ichthyosaurs. This provides a whole new context to investigate the extinction of these successful marine reptiles, at the end of the Cenomanian.
Disciplines :
Zoology Earth sciences & physical geography
Author, co-author :
Fischer, Valentin ; Université de Liège - ULiège > Département de géologie > Paléontologie animale et humaine
Bardet, Nathalie
Guiomar, Myette
Godefroit, Pascal
Language :
English
Title :
High Diversity in Cretaceous Ichthyosaurs from Europe Prior to Their Extinction
Publication date :
2014
Journal title :
PLoS ONE
eISSN :
1932-6203
Publisher :
Public Library of Science, San Franscisco, United States - California
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Bibliography
Fischer V, Clément A, Guiomar M, Godefroit P (2011) The first definite record of a Valanginian ichthyosaur and its implication for the evolution of post-Liassic Ichthyosauria. Cretaceous Research 32: 155-163.
McGowan C (1972) The systematics of Cretaceous ichthyosaurs with particuliar reference to the material from North America. Contributions to Geology 11: 9-29.
Bardet N (1992) Stratigraphic evidence for the extinction of the ichthyosaurs. Terra Nova 4: 649-656.
Sander PM (2000) Ichthyosauria: their diversity, distribution, and phylogeny. Paläontologische Zeitschrift 74: 1-35.
Lingham-Soliar T (2003) Extinction of ichthyosaurs: a catastrophic or evolutionary paradigm? Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen 228: 421-452.
Wade M (1984) Platypterygius australis, an Australian Cretaceous ichthyosaur. Lethaia 17: 99-113.
Wade M (1990) A review of the Australian Cretaceous longipinnate ichthyosaur Platypterygius (Ichthyosauria, Ichthyopterygia). Memoirs of the Queensland Museum 28: 115-137.
Kear BP (2002) Dental caries in an Early Cretaceous ichthyosaur. Alcheringa 25: 387-390.
Kear BP (2003) Cretaceous marine reptiles of Australia: a review of taxonomy and distribution. Cretaceous Research 24: 277-303.
Kear BP, Boles WE, Smith ET (2003) Unusual gut contents in a Cretaceous ichthyosaur. Proceedings of the Royal Society of London B Biological Sciences 270: S206-S208. (Pubitemid 37430857)
Kear BP (2005) Cranial morphology of Platypterygius longmani Wade, 1990 (Reptilia: Ichthyosauria) from the Lower Cretaceous of Australia. Zoological Journal of the Linnean Society 145: 583-622.
Zammit M (2010) A review of Australasian ichthyosaurs. Alcheringa 34: 281-292.
Zammit M, Norris RM, Kear BP (2010) The Australian Cretaceous ichthyosaur Platypterygius australis: a description and review of postcranial remains. Journal of Vertebrate Paleontology 30: 1726-1735.
Maxwell EE, Kear BP (2010) Postcranial anatomy of Platypterygius americanus (Reptilia: Ichthyosauria) from the Cretaceous of Wyoming. Journal of Vertebrate Paleontology 30: 1059-1068.
Maxwell EE, Caldwell MW (2006) A new genus of ichthyosaur from the Lower Cretaceous of Western Canada. Palaeontology 49: 1043-1052. (Pubitemid 44309068)
Maxwell EE, Caldwell MW (2006) Evidence for a second species of the ichthyosaur Platypterygius in North America: a new record from the Loon River Formation (Lower Cretaceous) of northwestern Canada. Canadian Journal of Earth Sciences 43: 1291-1295. (Pubitemid 46099091)
Zammit M (2012) Cretaceous ichthyosaurs: dwindling diversity, or the Empire strikes back? Geosciences 2: 11-24.
Fischer V (2012) New data on the ichthyosaur Platypterygius hercynicus and its implications for the validity of the genus. Acta Palaeontologica Polonica 57: 123-134.
Fischer V, Appleby RM, Naish D, Liston J, Riding JB, et al. (2013) A basal thunnosaurian from Iraq reveals disparate phylogenetic origins for Cretaceous ichthyosaurs. Biology Letters 9: 20130021.
Fischer V, Maisch MW, Naish D, Liston J, Kosma R, et al. (2012) New ophthalmosaurids from the Early Cretaceous of Europe demonstrate extensive ichthyosaur survival across the Jurassic-Cretaceous boundary. PLoS ONE 7: e29234.
Fischer V, Masure E, Arkhangelsky MS, Godefroit P (2011) A new Barremian (Early Cretaceous) ichthyosaur from western Russia. Journal of Vertebrate Paleontology 31: 1010-1025.
Druckenmiller PS, Maxwell EE (2010) A new Lower Cretaceous (lower Albian) ichthyosaur genus from the Clearwater Formation, Alberta, Canada. Canadian Journal of Earth Sciences 47: 1037-1053.
Maxwell EE, Druckenmiller PS (2011) A small ichthyosaur from the Clearwater Formation (Alberta, Canada) and a discussion of the taxonomic utility of the pectoral girdle. Paläontologische Zeitschrift 85: 457-463.
Godefroit P (1996) Biodiversité des reptiles marins du Jurassique inférieur belgo-luxembourgeois. Bulletin de la Société belge de Géologie 104: 67-76.
Massare JA (1987) Tooth morphology and prey preference of Mesozoic marine reptiles. Journal of Vertebrate Paleontology 7: 121-137.
Kear BP, Zammit M (2013) In utero foetal remains of the Cretaceous ichthyosaurian Platypterygius: ontogenetic implications for character state efficacy. Geological Magazine In Press.
Zammit M (2011) The Australian Cretaceous ichthyosaur Platypterygius australis: understanding its taxonomy, morphology, and palaeobiology: University of Adelaide, South Australia. 106 p.
Massare JA (1997) Faunas, behavior, and evolution. In: Callaway JM, Nicholls EL, editors. Ancient Marine Reptiles. San Diego: Academic Press. pp. 401-421.
Schubert BW, Ungar PS (2005) Wear facets and enamel spalling in tyrannosaurid dinosaurs. Acta Palaeontologica Polonica 50: 93-99. (Pubitemid 40335180)
Thewissen JGM, Sensor JD, Clementz MT, Bajpari S (2011) Evolution of dental wear and diet during the origin of whales. Palaeobiology 37: 655-669.
Ross MR (2009) Charting the Late Cretaceous seas: mosasaurs richness and morphological diversification. Journal of Vertebrate Paleontology 292: 409-416.
Owen HG (2012) The Gault Group (Early Cretaceous, Albian), in East Kent, S.E. England; its lithology and ammonite biozonation. Proceedings of the Geologists' Association 123: 742-765.
Juignet P (1974) La transgression crétacée sur la bordure orientale du Massif armoricain. Aptien, Albien, Cénomanien de Normandie et du Maine. Le stratotype du Cénomanien: Université de Caen. 806 p.
Travassac F (2004) Stratigraphie, sédimentologie et géochimie d'une série d'âge barrémien supérieur à albien pro parte du bassin vocontien (SE France) : implications paléoenvironnmentales. Marseille: Ecole doctorale Sciences de l'Environnement d'Aix-Marseille. 54 p.
Scott RW (2009) Uppermost Albian biostrigraphy and chronostratigraphy. Notebooks on Geology 2009/03: 1-16.
Amédro F (2008) Support for a Vraconnian Stage between the Albien sensu stricto and the Cenomanien (Cretacous System). Notebooks on Geology Memoir 2008/02: 83.
Amédro F, Robaszynski F (2008) Zonation by ammonites and foraminifers of the Vraconnian-Turonian interval: A comparison of the Boreal and Tethyan domains (NW Europe/Central Tunisia). Notebooks on Geology, Letter 2008/02: 5.
Lehmann J, Heldt M, Bachmann M, Hedi Negra ME (2009) Aptian (Lower Cretaceous) biostratigraphy and cephalopods from north central Tunisia. Cretaceous Research 30: 895-910.
Kuhnt W, Moullade M (2007) The Gargasian (Middle Aptian) of La Marcouline section at Cassis-La Bédoule (SE France): Stable isotope record and orbital cyclicity. Notebooks on Geology 2007/02: 1-9. (Pubitemid 47140391)
Ogg J, Ogg G, Gradstein FM (2008) A concise geologic timescale. Cambridge.
Gradstein FM, Ogg JG, Schmitz M, Ogg G (2012) The Geologic Time Scale 2012. Oxford, Great Britain: Elsevier Science & Technology. 1176 p.
Benson RBJ, Butler RJ (2011) Uncovering the diversification history of marine tetrapods: ecology influences the effect of geological sampling biases. In: McGowan AJ, Smith AB, editors. Comparing the geological and fossil records: implications for biodiversity studies. London: Geological Society, Special Publications. pp. 191-208.
Butler RJ, Barrett PM, Nowbath S, Upchurch P (2009) Estimating the effects of sampling biases on pterosaur diversity patterns: implications for hypotheses of bird/pterosaur competitive replacement. Palaeobiology 35: 432-446.
Butler RJ, Brusatte SL, Andres B, Benson RB (2011) How do geological sampling biases affect studies of morphological evolution in deep time? A case study of pterosaur (Reptilia: Archosauria) disparity. Evolution 66: 147-162.
Mannion PD, Upchurch P (2011) A re-evaluation of the 'mid-Cretaceous sauropod hiatus' and the impact of uneven sampling of the fossil record on patterns of regional dinosaur extinction. Palaeogeography Palaeoclimatology Palaeoecology 299: 529-540.
Mannion PD, Upchurch P, Carrano MT, Barrett PM (2011) Testing the effect of the rock record on diversity: a multidisciplinary approach to elucidating the generic richness of sauropodomorph dinosaurs through time. Biological Reviews 86: 157-181.
Hopson PM, Wilkinson IP, Wood MA (2008) A stratigraphical framework for the Lower Cretaceous of England. British Geological Survey Research Reports RR/08/03: 1-87.
Sauvage HE (1882) Recherches sur les reptiles trouvées dans le Gault de l'Est du bassin de Paris. Mémoires de la Société géologique de France, 3e série 2: 21-24.
Breton G (2011) Deux nouvelles espèces de crustacés décapodes de l'Albien du Bassin de Paris. Geodiversitas 33: 279-284.
Seeley HG (1869) Index of the fossil remains of Aves, Ornithosauria and Reptilia, from the Secondary System of Strata Aranged in the Woodward Museum of the Univeristy of Cambridge; Deighton BC, editor. Cambridge.
Martill DM, Unwin DM (2012) The world's largest toothed pterosaur, NHMUK R481, an incomplete rostrum of Coloborhynchus capito (Seeley, 1870) from the Cambridge Greensand of England. Cretaceous Research 34: 1-9.
Hopson PM (2005) A stratigraphical framework for the Upper Cretaceous Chalk of England and Scotland with statements on the Chalk of Northern Ireland and the UK Offshore Sector. British Geological Survey Research Reports RR/05/01: 1-102.
Cookson IC, Hughes NF (1964) Microplankton from the Cambridge Greensand (mid-Cretaceous). Palaeontology 7: 37-59.
Barrett PM, Evans SE (2002) A reassessment of the Early Cretaceous reptile 'Patricosaurus merocratus' Seeley from the Cambridge Greensand, Cambridgeshire, UK. Cretaceous Research 23: 231-240.
Seeley HG (1876) On an associated series of cervical and dorsal vertebræ of Polyptychodon, from the Cambridge Upper Greensand, in the Woodwardian Museum of the University of Cambridge. Quarterly Journal of the Geological Society 32: 433-436.
Unwin DM (2001) An overview of the pterosaur assemblage from the Cambridge Greensand (Cretaceous) of Eastern England. Mitteilungen aus dem Museum für Naturkunde in Berlin, Geowissenschaftliche Reihe 4: 189-221.
Robaszynski F, Amedro F, Gonzalez-Donoso JM, Linares D (2008) The Albian (Vraconnian)-Cenomanian boundary at the western Tethyan margins (central Tunisia and southeastern France). Bulletin de la Société géologique de France 179: 245-266.
Woods MA, Wilkinson GK, Booth KA, Farrant AR, Hopson PM, et al. (2008) A reappraisal of the stratigraphy and depositional development of the Upper Greensand (Late Albian) of the Devizes district, southern England. Proceedings of the Geologists' Association 119: 229-244.
Bréhéret J-G (1997) L'Aptien et l'Albien de la Fosse vocontienne (des bordures au bassin) : Evolution de la sédimentation et enseignements sur les événements anoxiques. Société géologique du Nord 25: 614.
Wilpshaar M, Leereveld H, Visscher H (1997) Early Cretaceous sedimentary and tectonic development of the Dauphinois Basin (SE France). Cretaceous Research 18: 457-468.
Kennedy WJ, Gale AS, Bown PR, Caron M, Davey RJ, et al. (2000) Integrated stratigraphy across the Aptian-Albian boundary in the Marnes Bleues, at the Col de Pré-Guittard, Arnayon (Drôme), and at Tartonne (Alpes-de-Haute-Provence), France: a candidate Global Boundary Stratotype Section and Boundary Point for the base of the Albian Stage. Cretaceous Research 21: 591-720.
Accarie H, Beaudoin B, Dejax J, Friès G, Michard J-G, et al. (1995) Découverte d'un dinosaure théropode nouveau (Genusaurus sisteronis n. g., n. sp.) dans l'Albien marin de Sisteron (Alpes de Haute-Provence, France) et extension au Crétacé inférieur de la lignée cératosaurienne. Comptes Rendus de l'Académie des Sciences de Paris 320: 327-334.
Herrle JO, Mutterlose J (2003) Calcareous nannofossils from the Aptian-Lower Albian of southeast France: palaeoecological and biostratigraphic implications. Cretaceous Research 24: 1-22. (Pubitemid 37050133)
Haccard D, Beaudoin B, Gigot P, Jorda M (1989) La Javie. In: BRGM, editor. Carte Géologique de France à 1/50 000.
Blainville HMD, de (1835) Description de quelques espèces de reptiles de la Californie, précédée de l'analyse d'un système général d'érpetologie et d'amphibiologie. Nouvelles annales du Muséum d'Histoire naturelle, Paris 4: 233-296.
Baur G (1887) On the morphology and origin of the Ichthyopterygia. American Naturalist 21: 837-840.
Arkhangelsky MS (2001) The historical sequence of Jurassic and Cretaceous ichthyosaurs. Paleontological Journal 35: 521-524.
Lydekker R (1889) Catalogue of the fossil Reptilia and Amphibia in British Museum (Natural History). Part II. containing the orders Ichthyopterygia and Sauropterygia. London: Printed by Orders of the Trustees of the British Museum, London.
McGowan C, Motani R (2003) Part 8. Ichthyopterygia; Sues H-D, editor. München: Verlag Dr. Friedrich Pfeil. 175 p.
Johnson R (1977) Size independent criteria for estimating relative age and the relationship among growth parameters in a group of fossil reptiles (Reptilia: Ichthyosauria). Canadian Journal of Earth Sciences 14: 1916-1924.
Fischer V (2013) Origin, biodiversity and extinction of Cretaceous ichthyosaurs. Liège, Belgium: Université de Liège. 576 p.
Bardet N, Fernández M (2000) A new ichthyosaur from the Upper Jurassic lithographic limestones of Bavaria. Journal of Paleontology 74: 503-511. (Pubitemid 30309018)
Kirton AM (1983) A review of British Upper Jurassic ichthyosaurs. Newcastle upon Tyne: University of Newcastle upon Tyne. 239 p.
Kuhn O (1946) Ein skelett von Ichthyosaurus hercynicus n. sp. aus dem Aptien von Gitter. Berichte der Naturforschenden Gesellschaft Bamberg 29: 69-82.
Appleby RM (1961) On the cranial morphology of ichthyosaurs. Proceedings of the Zoological Society of London 137: 333-370.
Kolb C, Sander PM (2009) Redescription of the ichthyosaur Platypterygius hercynicus (Kuhn 1946) from the Lower Cretaceous of Salzgitter (Lower Saxony, Germany). Palaeontographica Abteilung A (Paläozoologie, Stratigraphie) 288: 151-192.
Adams TL, Fiorillo A (2011) Platypterygius Huene, 1922 (Ichthyosauria, Ophthalmosauridae) from the Late Cretaceous of Texas, USA. Palaeontologia Electronica 14: 19A.
Gasparini Z (1988) Ophthalmosaurus monocharactus Appleby (Reptilia, Ichthyopterygia), en las calizas litograpficas tithonianas del area Los Catutos, Nequén, Argentina. Ameghiniana 25: 3-16.
McGowan C (1973) The cranial morphology of the Lower Liassic latipinnate ichthyosaurs of England. Bulletin of the British Museum (Natural History) Geology 24: 1-109.
Andrews CW (1910) A descriptive catalogue of the Marine Reptiles of the Oxford Clay, part I. London: British Museum of Natural History. 205 p.
Maxwell EE (2010) Generic reassignment of an ichthyosaur from the Queen Elizabeth Islands, Northwest Territories, Canada. Journal of Vertebrate Paleontology 30: 403-415.
Maxwell EE, Caldwell MW, Lamoureux DO (2011) Tooth histology in the Cretaceous ichthyosaur Platypterygius australis, and its significance for the conservation and divergence of mineralized tooth tissues in amniotes. Journal of Morphology 272: 129-135.
Appleby RM (1956) The osteology and taxonomy of the fossil reptile Ophthalmosaurus. Proceedings of the Zoological Society of London 126: 403-447.
Nace RL (1939) A new ichthyosaur from the Upper Cretaceous Mowry Formation of Wyoming. American Journal of Science 237: 673-686.
Araújo R, Smith AS, Liston J (2008) The Alfred Leeds fossil vertebrate Collection of the National Museum of Ireland-Natural History. Irish Journal of Earth Sciences 26: 17-32.
Huene Fv (1922) Die Ichthyosaurier des Lias und ihre Zusammenhänge. Berlin: Verlag von Gebrüder Borntraeger. 114 p.
Delair JB (1960) The Mesozoic reptiles of Dorset. Proceedings of the Dorset Natural History and Arhcaeological Society 81: 59-85.
Carter J (1846) On the occurence of a new species of Ichthyosaurus in the Chalk. London Geological Journal 1.
Carter J (1846) Notice of the jaws of an Ichthyosaurus from the chalk in the neighbourhood of Cambridge. Reports of the British Association for the Advancement of Science 1845: 60.
Bardet N (1989) Un crâne d'Ichthyopterygia dans le Cénomanien du Boulonnais. Mémoires de la Société académique du Boulonnais 6: 31 pp.
Kiprijanoff W (1881) Studien über die fossilen Reptilien Russlands. Theil 1, Gattung Ichthyosaurus König aus dem severischen Sandstein oder Osteolith der Kreide-Gruppe. Mémoires de l'Académie impériale des Sciences de St-Pétersbourg, VIIe série 28: 1-103.
Bardet N (1990) Dental cross-section in Cretaceous Ichthyopterygia: systematic implications. Geobios 23: 169-172.
Sirotti A, Papazzoni C (2002) On the Cretaceous ichthyosaur remains from the Northern Apennines (Italy). Bollettino della Societa Paleontologica Italiana 41: 237-248. (Pubitemid 36257647)
Blain H-A, Pennetier G, Pennetier E (2003) Présence du genre Platypterygius (Ichthyosauria, Reptilia) dans le Cénomanien inférieur de Villers-sur-Mer (Normandie, France. Echos des falaises 7: 35-50.
Broili F (1907) Ein neuer Ichthyosaurus aus der norddeutschen Kreide. Palaeontographica 54: 139-162.
Nace RL (1941) A new ichthyosaur from the Late Cretaceous of northeastern Wyoming. American Journal of Science 239: 908-914.
Fernández MS, Maxwell EE (2012) The genus Arthropterygius Maxwell (Ichthyosauria: Ophthalmosauridae) in the Late Jurassic of the Neuquén Basin, Argentina. Geobios 45: 535-540.
Lydekker R (1888) Note on the classification of the Ichthyopterygia with a notice of two new species. Geological Magazine third series 5: 309-314.
Fischer V, Arkhangelsky MS, Uspensky GN, Stenshin IM, Godefroit P (In Press) A new Lower Cretaceous ichthyosaur from Russia reveals skull shape conservatism within Ophthalmosaurinae. Geological Magazine In Press.
Scheyer TM, Moser M (2011) Survival of the thinnest: rediscovery of Bauer's (1898) ichthyosaur tooth sections from Upper Jurassic lithographic limestone quarries, south Germany. Swiss Journal of Geoscience 104: S147-S157.
McGowan C (1997) The taxonomic status of the Late Jurassic ichthyosaur Grendelius mordax : a preliminary report. Journal of Vertebrate Paleontology 17: 428-430.
Pardo-Perez J, Frey E, Stinnesbeck W, Fernández M, Rivas L, et al. (2012) An ichthyosaurian forefin from the Lower Cretaceous Zapata Formation of southern Chile: implications for morphological variability within Platypterygius. Palaeobiodiversity and Palaeoenvironment 92: 287-294.
Arkhangelsky MS (1997) On a new genus of ichthyosaurs from the Lower Volgian substage of the Saratov, Volga Region. Paleontological Journal 31: 87-90.
Efimov VM (1999) Ichthyosaurs of a new genus Yasykovia from the Upper Jurassic strata of European Russia. Paleontological Journal 33: 92-100.
Maisch MW, Matzke AT (2000) The Ichthyosauria. Stuttgarter Beiträge zur Naturkunde Serie B (Geologie und Paläontologie) 298: 1-159.
Seeley HG (1873) On Cetarthrosaurus walkeri (Seeley), an ichthyosaurian from the Cambridge Upper Greensand. Quarterly Journal of the Geological Society 29: 505-507.
Fernández M (1997) A new ichthyosaur from the Tithonian (Late Jurassic) of the Neuquén Basin (Argentina). Journal of Paleontology 71: 479-484.
Fernández M (2007) Redescription and phylogenetic position of Caypullisaurus (Ichthyosauria: Ophthalmosauridae). Journal of Paleontology 81: 368-375.
Fernández M (2007) Chapter 11. Ichthyosauria. In: Gasparini Z, Salgado L, Coria RA, editors. Patagonian Mesozoic Reptiles. Bloomington and Indianapolis, Indiana: Indiana University Press. pp. 271-291.
Efimov VM (1997) A new genus of ichthyosaurs from the Late Cretaceous of the Ulyanovsk Volga region. Paleontological Journal 31: 422-426.
Fischer V, Arkhangelsky MS, Stenshin IM, Uspensky GN, Godefroit P (In Review) The Russian Cretaceous ichthyosaurs Simbirskiasaurus birjukovi and Pervushovisaurus bannovkensis. Journal of Vertebrate Paleontology.
Paramo ME (1997) Platypterygius sachicarum (Reptilia, Ichthyosauria) nueva especie del Cretácio de Colombia. Revista Ingeominas 6: 1-12.
Fernández M, Aguirre-Urreta MB (2005) Revision of Platypterygius hauthali von Huene, 1927 (Ichthyosauria, Ophthalmosauridae) from the Early Cretaceous of Patagonia, Argentina. Journal of Vertebrate Paleontology 25: 583-587. (Pubitemid 43090966)
Huene Fv (1927) Beitrag zur Kenntnis mariner mesozoicher Wirbeltiere in Argentinien. Centralblatt für Mineralogie, Geologie und Paläntologie, B 1927: 22-29.
Maisch MW (2008) Revision der Gattung Stenopterygius Jaekel, 1904 emend. von Huene, 1922 (Reptilia: Ichthyosauria) aus dem unteren Jura Westeuropas. Palaeodiversity 1: 227-271.
Maisch MW (2001) Neue Exemplare der seltenen Ichthyosauriergattung Suevoleviathan Maisch 1998 aus dem Unteren Jura von Südwestdeutschland. Geologica et Palaeontologica 35: 145-160.
Maisch MW (1998) A new ichthyosaur genus from the Posidonia Shale (Lower Toarcian, Jurassic) of Holzmaden, SW-Germany with comments on the phylogeny of post-Triassic ichthyosaurs. Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen 209: 47-78.
Maxwell EE (2012) New metrics to differentiate species of Stenopterygius (Reptilia: Ichthyosauria) from the Lower Jurassic of southwestern Germany. Journal of Paleontology 86: 105-115.
Martin JE, Fischer V, Vincent P, Suan G (2012) A longirostrine Temnodontosaurus (Ichthyosauria) with comments on Early Jurassic ichthyosaur niche partitioning and disparity. Palaeontology 55: 995-1005.
Gasparini Z, De La Fuente M, Fernández M (1995) Sea reptiles from the lithographic limestones of the Neuquén Basin, Argentina. II international symposium on lithographic limestones. Lleida - Cuenca (Spain): Ediciones de la Universidad Autónoma de Madrid. pp. 81-84.
Spalletti L, Gasparini Z, Veiga G, Schwarz E, Fernández M, et al. (1999) Facies anóxicas, procesos deposicionales y herpetofauna de la rampa marina titoniano-berriasiana en la Cuenca Neuquina (Yesera del Tromen), Neuquén, Argentina. Revista Geológica de Chile 1: 109-123. (Pubitemid 30034296)
Buchy MC, Lopez Oliva JG (2009) Occurrence of a second ichthyosaur genus (Reptilia; Ichthyosauria) in the Late Jurassic Gulf of Mexico. Boletin de la Sociedad Geologica Mexicana 61: 233-238.
Buchy M-C (2010) First record of Ophthalmosaurus (Reptilia: Ichthyosauria) from the Tithonian (Upper Jurassic) of Mexico. Journal of Paleontology 84: 149-155.
Arkhangelsky MS (1998) On the ichthyosaurian fossil from the Volgian stage of the Saratov Region. Paleontological Journal 32: 192-196.
Arkhangelsky MS (2000) On the ichthyosaur Otschevia from the Volgian Stage of the Volga Region. Paleontological Journal 34: 549-552.
Arkhangelsky MS (2001) On a new ichthyosaur of the genus Otschevia from the Volgian Stage of the Volga Region near Ulyanovsk. Paleontological Journal 35: 629-634.
Efimov VM (1998) An ichthyosaur, Otschevia pseudoscythica gen. et sp. nov. from the Upper Jurassic strata of the Ulyanovsk Region (Volga Region). Paleontological Journal 32: 82-86.
Efimov VM (1999) A new family of ichthyosaurs, the Undorosauridae fam. nov. from the Volgian stage of the European part of Russia. Paleontological Journal 33: 174-181.
Bardet N (1994) Extinction events among Mesozoic marine reptiles. Historical Biology 7: 313-324.
Bardet N (1995) Evolution et extinction des reptiles marins au cours du Mésozo?̈que. Palaeovertebrata 24: 177-283.
McGowan C (1974) A revision of the longipinnate ichthyosaurs of the Lower Jurassic of England, with description of the new species (Reptilia, Ichthyosauria). Life Science Contributions, Royal Ontario Museum 97: 1-37.
McGowan C (1974) A revision of the latipinnate ichthyosaurs of the Lower Jurassic of England (Reptilia, Ichthyosauria). Life Science Contributions, Royal Ontario Museum 100: 1-30.
McGowan C (1989) Leptopterygius tenuirostris and other long-snouted ichthyosaurs from the English Lower Lias. Palaeontology 32: 409-427.
McGowan C (1996) Giant ichthyosaurs of the Early Jurassic. Canadian Journal of Earth Sciences 33: 1011-1021.
Godefroit P (1993) Les grands ichthyosaures sinémuriens d'Arlon. Bulletin de l'Institut Royal des Sciences Naturelles de Belgique Sciences de la Terre 63: 25-71.
Delair JB (1972) Some recent discoveries of Kimmeridgian reptiles at Swindon. Wiltshire Archaeological and Natural History Magazine 67: 12-15.
Taylor MA, Benton MJ (1986) Reptiles from the Upper Kimmeridge Clay (Kimmeridgian, Upper Jurassic) of the vicinity of Egmont Bight, Dorset. Proceedings of the Dorset Natural History and Archaeological Society 107: 121-125.
Billon-Bruyat J-P, Lécuyer C, Martineau F, Mazin J-M (2005) Oxygen isotope compositions of Late Jurassic vertebrate remains from lithographic limestones of western Europe: implications for the ecology of fish, turtles, and crocodilians. Palaeogeography Palaeoclimatology Palaeoecology 216: 359-375. (Pubitemid 40084860)
Buffetaut E (1994) Tetrapods from the Late Jurassic and Early Cretceous lithographic limestones of Europe: a comparative review. Geobios, mémoire spécial 16: 259-265.
Gasparini Z, Fernández M (2005) Jurassic marine reptiles of the Neuquén Basin: records, faunas and their palaeobiogeographic significance. In: Veiga GD, Spalletti LA, Howell JA, Schwarz E, editors. The Neuquén Basin, Argentina: A case study in sequence stratigraphy and basin dynamics. London: Geological Society, special Publications. pp. 279-294.
McGowan C (1991) Dinosaurs, Spitfires, and Sea Dragons: Harvard University Press. 365 p.
Ensom PC, Clements RG, Feist-Burkhardt S, Milner AR, Chitolie J, et al. (2009) The age and identity of an ichthyosaur reputedly from the Purbeck Limestone Group, Lower Cretaceous, Dorset, southern England. Cretaceous Research 30: 699-709.
Young MT, Brusatte SL, de Andrade MB, Desojo JB, Beatty BL, et al. (2012) The cranial osteology and feeding ecology of the metriorhynchid crocodylomorph genera Dakosaurus and Plesiosuchus from the Late Jurassic of Europe. PLoS ONE 7: e44985.
Owen R (1851-64) A monograph on the fossil Reptilia of the Cretaceous formations. London: The Palæntological Society.
Fischer V, Guiomar M, Godefroit P (2011) New data on the palaeobiogeography of Early Jurassic marine reptiles: the Toarcian ichthyosaur fauna of the Vocontian Basin (SE France). Neues Jahrbuch für Geologie und Paläontologie 261: 111-127.
Benson RB, Ketchum HF, Noè LF, Gómez-Pérez M (2011) New information on Hauffiosaurus (Reptilia, Plesiosauria) based on a new species from the Alumn Shale member (Lower Toarcian: Lower Jurassic) of Yorkshire, UK. Palaeontology 54: 547-571.
Benson RB, Evans M, Druckenmiller PS (2012) High diversity, low disparity and small body size in plesiosaurs (Reptilia, Sauropterygia) from the Triassic-Jurassic boundary. PLoS ONE 7: e31838.
Vincent P, Benson RBJ (2012) Anningasaura, a basal plesiosaurian (Reptilia, Plesiosauria) from the Lower Jurassic of Lyme Regis, United Kingdom. Journal of Vertebrate Paleontology 32: 1049-1063.
Vincent P, Bardet N, Mattioli E (2013) A new pliosaurid from the Pliensbachian (Early Jurassic) of Normandy (Northern France). Acta Palaeontologica Polonica 58: 471-485.
Vincent P (2008) Les Plesiosauria (Reptilia, Sauropterygia) du Jurassique inférieur : systématique, anatomie, phylogénie et paléoécologie. Paris: Museum national d'Histoire naturelle de Paris. 577 p.
Smith AS (2007) Anatomy and Systematics of the Rhomaleosauridae (Sauropterygia: Plesiosauria): University College Dublin. 278 p.
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