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Metriorhynchoid
Metriorhynchoidea is an extinct superfamily of thalattosuchian crocodyliforms from the Early Jurassic to the Early Cretaceous (Toarcian - Valanginian, possibly as late as early Aptian) of Europe, North America and South America. Metriorhynchids are fully aquatic crocodyliforms. Named by Fitzinger, in 1843, it contains the basal taxa like ''Teleidosaurus'', ''Zoneait'' and ''Eoneustes'' and the family Metriorhynchidae. An unnamed taxon is known from Chile. Phylogeny Metriorhynchoidea is a stem-based taxon defined in 2009 as the most inclusive clade consisting of ''Metriorhynchus geoffroyii'', but not ''Teleosaurus cadomensis''. The cladogram A cladogram (from Greek ''clados'' "branch" and ''gramma'' "character") is a diagram used in cladistics to show relations among organisms. A cladogram is not, however, an evolutionary tree because it does not show how ancestors are related to ... below follows the topology from a 2011 analysis by Andrea Cau and Federico Fanti. N ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zoneait
''Zoneait'' (pronounced "zone-eight" and meaning "large tooth" in the Kiowa language) is an extinct genus of thalattosuchian crocodylomorph known from a single species, ''Zoneait nargorum'', from the Middle Jurassic of Oregon. ''Z. nargorum'' was named in 2015 by paleontologist Eric Wilberg on the basis of several partial skulls, vertebrae, and forelimb bones that were found in an outcrop of the Snowshoe Formation near the town of Izee. It is a member of Metriorhynchoidea, a clade of marine-adapted thalattosuchians that existed until the Early Cretaceous. The skeleton of ''Zoneait'' possesses several adaptations for offshore marine life but retains features characteristic of its land-living ancestors, indicating that it is a transitional form between the fully marine metriorhynchids of the late Middle Jurassic to Early Cretaceous, and earlier non-marine crocodylomorphs. The Snowshoe Formation was deposited in a shallow marine environment within a tropical forearc basin, suggestin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Opisuchus
''Opisuchus'' is an extinct genus of metriorhynchoid crocodyliform known from the Middle Jurassic Opalinuston Formation of Germany Germany,, officially the Federal Republic of Germany, is a country in Central Europe. It is the second most populous country in Europe after Russia, and the most populous member state of the European Union. Germany is situated betwe .... It contains a single species, ''O. meieri''. References Middle Jurassic crocodylomorphs Fossil taxa described in 2019 Fossils of Germany {{Paleo-archosaur-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thalattosuchia
Thalattosuchia is a clade of marine crocodylomorphs from the Early Jurassic to the Early Cretaceous that had a cosmopolitan distribution. They are colloquially referred to as marine crocodiles or sea crocodiles, though they are not members of Crocodilia and records from Thailand and China suggest that some members lived in freshwater. The clade contains two major subgroupings, the Teleosauroidea and Metriorhynchoidea. Teleosauroids are not greatly specialised for oceanic life, with back osteoderms similar to other crocodyliformes. Within Metriorhynchoidea, the Metriorhynchidae displayed extreme adaptions for life in the open ocean, including the transformation of limbs into flippers, the development of a tail fluke, and smooth, scaleless skin. Discovery and naming The term Thalattosuchia was coined by Fraas in 1901.Fraas E. 1901. Die Meerkrokodile (Thalattosuchia n. g.) eine neue Sauriergruppe der Juraformation. ''Jahreshefte des Vereins für vaterländische Naturkunde, Württem ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eoneustes
''Eoneustes'' (meaning "dawn swimmer") is an extinct genus of metriorhynchoid crocodyliform from Middle Jurassic (late Bajocian to early Bathonian stage) deposits of France. ''Eoneustes'' was a carnivore that lived in the oceans and spent much, if not all, its life out at sea. Discovery and species *''E. bathonicus'':Mercier J. 1933. Contribution l’étude des Métriorhynchidés (crocodiliens). ''Annales de Paléontologie'' 22: 99-119. Western Europe (France) of the Middle Jurassic (early Bathonian). It is known from holotype from Calvados of Normandy, that lost during the Second World War. *''E. gaudryi'':Collot L. 1905. Reptile jurassique (''Teleidosaurus gaudryi'') trouvé à St-Seine-l'Abbaye (Côte-d'Or). ''Memoire Acad. Sci. Arts et Belles-Lettres'' 10: 41-45. Western Europe (France) of the Middle Jurassic (late Bajocian to early Bathonian). It is known from the holotype NHM R.3353, a partial skull from Côte d’Or, Burgundy Burgundy (; french: link=no, Bourgogne ) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magyarosuchus
''Magyarosuchus'' is an extinct monotypic genus of metriorhynchoid described for the first time from fossils discovered in the Kisgerecse Marl Formation in Hungary Hungary ( hu, Magyarország ) is a landlocked country in Central Europe. Spanning of the Carpathian Basin, it is bordered by Slovakia to the north, Ukraine to the northeast, Romania to the east and southeast, Serbia to the south, Croatia a .... The type species ''Magyarosuchus fitosi'' lived during the Toarcian, about 180 million years ago. Most of the skeleton is known, including parts of the jaw, torso, legs and tail, which was discovered in 1996. It was around long when fully grown and weighed . References Fossil taxa described in 2018 Thalattosuchians Prehistoric pseudosuchian genera Prehistoric marine crocodylomorphs Early Jurassic crocodylomorphs Jurassic reptiles of Europe {{jurassic-reptile-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eoneustes Gaudryi
''Eoneustes'' (meaning "dawn swimmer") is an extinct genus of metriorhynchoid crocodyliform from Middle Jurassic (late Bajocian to early Bathonian stage) deposits of France. ''Eoneustes'' was a carnivore that lived in the oceans and spent much, if not all, its life out at sea. Discovery and species *''E. bathonicus'':Mercier J. 1933. Contribution l’étude des Métriorhynchidés (crocodiliens). ''Annales de Paléontologie'' 22: 99-119. Western Europe (France) of the Middle Jurassic (early Bathonian). It is known from holotype from Calvados of Normandy, that lost during the Second World War. *''E. gaudryi'':Collot L. 1905. Reptile jurassique (''Teleidosaurus gaudryi'') trouvé à St-Seine-l'Abbaye (Côte-d'Or). ''Memoire Acad. Sci. Arts et Belles-Lettres'' 10: 41-45. Western Europe (France) of the Middle Jurassic (late Bajocian to early Bathonian). It is known from the holotype NHM R.3353, a partial skull from Côte d’Or, Burgundy Burgundy (; french: link=no, Bourgogne ) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Teleidosaurus
''Teleidosaurus'' is an extinct genus of carnivorous metriorhynchoid crocodyliform from Middle Jurassic (late Bajocian to early Bathonian stage) deposits of Normandy, France.Wilkinson LE, Young MT, Benton MJ. 2008. A new metriorhynchid crocodilian (Mesoeucrocodylia: Thalattosuchia) from the Kimmeridgian (Upper Jurassic) of Wiltshire, UK. ''Palaeontology'' 51 (6): 1307-1333. The name ''Teleidosaurus'' means "Complete lizard", and is derived from the Greek '- ("complete") and -''sauros'' ("lizard"). Discovery The type species was named ''Teleosaurus Calvadosii'' icby Jacques Amand Eudes-Deslongchamps in 1866;Eudes-Deslongchamps, J.A. 1866. Description d'une espèce inédite de Téléosaure des environs de Caen, le ''Teleosaurus calvadosii''. ''Bulletin Soc. Linn. Normandie'' 2 (1): 112-118. however, it was his son, Eugène Eudes-Deslongchamps who erected the generic name ''Teleidosaurus'' later in 1869 Eudes-Deslongchamps, E. 1869. Notice sur les animaux fossiles de la famill ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metriorhynchidae
Metriorhynchidae is an extinct family of specialized, aquatic metriorhynchoid crocodyliforms from the Middle Jurassic to the Early Cretaceous period (Bajocian to early Aptian) of Europe, North America and South America. The name Metriorhynchidae was coined by the Austrian zoologist Leopold Fitzinger in 1843.Fitzinger LJFJ. 1843. ''Systema Reptilium''. Wien: Braumüller et Seidel, 106 pp. The group contains two subfamilies, the Metriorhynchinae and the Geosaurinae. They represent the most marine adapted of all archosaurs. Description Metriorhynchids are fully aquatic crocodyliforms. Their forelimbs were small and paddle-like, and unlike living crocodylians, they lost their osteoderms ("armour scutes"). Their body shape maximised hydrodynamy (swimming efficiency), as they did have a shark-like tail fluke. Like ichthyosaurs and plesiosaurs, metriorhynchids developed smooth, scaleless skin. Metriorhynchids were the only group of archosaurs to become fully adapted to the mar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eoneustes Bathonicus
''Eoneustes'' (meaning "dawn swimmer") is an extinct genus of metriorhynchoid crocodyliform from Middle Jurassic (late Bajocian to early Bathonian stage) deposits of France. ''Eoneustes'' was a carnivore that lived in the oceans and spent much, if not all, its life out at sea. Discovery and species *''E. bathonicus'':Mercier J. 1933. Contribution l’étude des Métriorhynchidés (crocodiliens). ''Annales de Paléontologie'' 22: 99-119. Western Europe (France) of the Middle Jurassic (early Bathonian). It is known from holotype from Calvados of Normandy, that lost during the Second World War. *''E. gaudryi'':Collot L. 1905. Reptile jurassique (''Teleidosaurus gaudryi'') trouvé à St-Seine-l'Abbaye (Côte-d'Or). ''Memoire Acad. Sci. Arts et Belles-Lettres'' 10: 41-45. Western Europe (France) of the Middle Jurassic (late Bajocian to early Bathonian). It is known from the holotype NHM R.3353, a partial skull from Côte d’Or, Burgundy Burgundy (; french: link=no, Bourgogne ) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Teleidosaurus Calvadosii
''Teleidosaurus'' is an extinct genus of carnivorous metriorhynchoid crocodyliform from Middle Jurassic (late Bajocian to early Bathonian stage) deposits of Normandy, France.Wilkinson LE, Young MT, Benton MJ. 2008. A new metriorhynchid crocodilian (Mesoeucrocodylia: Thalattosuchia) from the Kimmeridgian (Upper Jurassic) of Wiltshire, UK. ''Palaeontology'' 51 (6): 1307-1333. The name ''Teleidosaurus'' means "Complete lizard", and is derived from the Greek '- ("complete") and -''sauros'' ("lizard"). Discovery The type species was named ''Teleosaurus Calvadosii'' icby Jacques Amand Eudes-Deslongchamps in 1866;Eudes-Deslongchamps, J.A. 1866. Description d'une espèce inédite de Téléosaure des environs de Caen, le ''Teleosaurus calvadosii''. ''Bulletin Soc. Linn. Normandie'' 2 (1): 112-118. however, it was his son, Eugène Eudes-Deslongchamps who erected the generic name ''Teleidosaurus'' later in 1869 Eudes-Deslongchamps, E. 1869. Notice sur les animaux fossiles de la famill ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stem-based Taxon
Phylogenetic nomenclature is a method of nomenclature for taxa in biology that uses phylogenetic definitions for taxon names as explained below. This contrasts with the traditional approach, in which taxon names are defined by a '' type'', which can be a specimen or a taxon of lower rank, and a description in words. Phylogenetic nomenclature is currently regulated by the '' International Code of Phylogenetic Nomenclature'' (''PhyloCode''). Definitions Phylogenetic nomenclature ties names to clades, groups consisting of an ancestor and all its descendants. These groups can equivalently be called monophyletic. There are slightly different ways of specifying the ancestor, which are discussed below. Once the ancestor is specified, the meaning of the name is fixed: the ancestor and all organisms which are its descendants are included in the named taxon. Listing all these organisms (i.e. providing a full circumscription) requires the full phylogenetic tree to be known. In practice, the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metriorhynchus Geoffroyii
''Metriorhynchus'' is an extinct genus of marine crocodyliform that lived in the oceans during the Late Jurassic. The type species, ''M. brevirostris'' was named in 1829 as a species of ''Steneosaurus'' before being named as a separate genus by the German palaeontologist Christian von Meyer in 1832. The name ''Metriorhynchus'' means "Moderate snout", and is derived from the Greek ''Metrio''- ("moderate") and -''rhynchos'' ("snout"). Discovery and species Fossil specimens referrable to ''Metriorhynchus'' are known from Kimmeridgian (Late Jurassic) deposits of France. Valid species Only one valid species is recognized today, the type species ''M. geoffroyii'' (now called ''M. brevirostris''). ''"Metriorhynchus" hastifer'' and ''"M." palpebrosus'' are generically distinct from the ''Metriorhynchus'' type species, with ''hastifer'' being recovered as a geosaurine. Species in this genus were traditionally classed into two skull groups: longirostrine (long, narrow jaws) and brevirost ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
