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Teleosauridae
Teleosauridae is a family of extinct typically marine crocodylomorphs similar to the modern gharial that lived during the Jurassic period. Teleosaurids were thalattosuchians closely related to the fully aquatic metriorhynchoids, but were less adapted to an open-ocean, pelagic lifestyle. The family was originally coined to include all the semi-aquatic (i.e. non-metriorhynchoid) thalattosuchians and was equivalent to the modern superfamily Teleosauroidea. However, as teleosauroid relationships and diversity was better studied in the 21st century, the division of teleosauroids into two distinct evolutionary lineages led to the establishment of Teleosauridae as a more restrictive family within the group, together with its sister family Machimosauridae. Amongst teleosauroids, teleosaurids were generally smaller and less common than machimosaurids, suggesting the two families occupied different niches, similar to modern species of crocodilians. However, teleosaurids were more diverse ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thalattosuchians
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 Osteoderm, 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Teleosaurus
''Teleosaurus'' (from el, τέλειος , 'perfect' and el, σαῦρος , 'lizard') is an extinct genus of teleosaurid crocodyliform found in the Middle Jurassic Calcaire de Caen Formation of France. It was approximately in length and weighed . The holotype is MNHN AC 8746, a quarter of a skull and other associated postcranial remains, while other fragmentary specimens are known. The type species is ''T. cadomensis'', but a second species, ''T. geoffroyi'' may also exist. It was previously considered a wastebasket taxon, with many other remains assigned to the genus. History Teleosaur remains have been known to science since at least 1758, although at first scientists believed the remains belonged to extinct crocodiles and alligators, and remains that have at one point in time been attributed to ''Teleosaurus'' (and ''Steneosaurus'') have been known to science since at least 1800. The holotype was discovered during the early 19th century by Pierre Tesson before he tra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sericodon
''Sericodon'' is an extinct genus of teleosaurid crocodyliform from the Late Jurassic (Tithonian) of Germany and Switzerland. The genus contains a single species, ''S. jugleri''. ''Sericodon'' was placed in 'Clade T' (Aeolodontinae) and was found to be the sister taxon to ''Bathysuchus'', another teleosaurid. Taxonomy ''Sericodon'' was named for teeth from Late Jurassic deposits in Hanover, Germany, and Solothurn, Switzerland (Reuchenette Formation) by Hermann von Meyer in 1845.Meyer, H, (1845), Note on fossil reptiles: Neües Jahrbuch fur Mineralogie, Geologie und Palaontologie, 1845, p. 308-313. The genus was later synonymized with ''Steneosaurus'' by Steel (1973), but new work suggests it might be a distinct genus after all.Foffa D, Johnson MM, Young MT, Steel L, Brusatte SL. 2019. Revision of the Late Jurassic deep-water teleosauroid crocodylomorph ''Teleosaurus megarhinus'' Hulke, 1871 and evidence of pelagic adaptations in Teleosauroidea. PeerJ 7:e6646 http://doi.org/10.771 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bathysuchus
''Bathysuchus'' ("deep water crocodile") is an extinct genus of teleosaurid thalattosuchian from Late Jurassic (Kimmeridgian) deep water marine deposits in England and France. ''Bathysuchus'' displays features that suggest it was more pelagic than other teleosaurids (along with its close relatives within the Aeolodontinae), including smoother skull bones and reduced armour plating, similar to the fully marine metriorhynchids. This was possibly an adaptation to rising sea levels during the Kimmeridgian, as its earlier relatives such as ''Teleosaurus'' were suited for shallow coasts and lagoon environments. Description ''Bathysuchus'' is a very long-snouted (longirostrine) teleosaurid, currently known only from several snouts, the back of the skull, teeth, and a few osteoderms. It is distinguished from other derived teleosaurids in the following characteristics: strongly ventrally deflected anterior margin of the premaxilla; five premaxillary alveoli, the caudal-most being cons ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Machimosaurus
''Machimosaurus'' is an extinct genus of machimosaurid crocodyliform from the Late Jurassic (Kimmeridgian and Tithonian) and Early Cretaceous. The type species, ''Machimosaurus hugii'', was found in Switzerland. Other fossils have been found in England, France, Germany, Portugal, Switzerland and Tunisia.Steel R. 1973. ''Crocodylia. Handbuch der Paläoherpetologie, Teil 16''. Stuttgart: Gustav Fischer Verlag,116 pp. ''Machimosaurus rex'' is the largest named teleosauroid and thalattosuchian, with an estimated length of up to (skull length ). ''Machimosaurus'' is the largest known crocodyliform of the Jurassic. Discovery and species Christian Erich Hermann von Meyer in 1837 named isolated conical, blunt teeth with numerous longitudinal lines from Switzerland, ''Madrimosaurus hugii''. However, in 1838, realising he had misspelled the name, he emended ''Madrimosaurus'' to ''Machimosaurus'', from the Greek ''machimoi'', ancient Egyptian troops deployed during the Ptolemaic Dy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mycterosuchus
''Mycterosuchus'' is an extinct genus of teleosaurid crocodyliform from the Middle Jurassic (Callovian) of England. Although previously synonymized with ''Steneosaurus'', recent cladistic analysis considers it distantly related to the ''Steneosaurus'' type species.Ősi A, Young MT, Galácz A, Rabi M. (2018) A new large-bodied thalattosuchian crocodyliform from the Lower Jurassic (Toarcian) of Hungary, with further evidence of the mosaic acquisition of marine adaptations in Metriorhynchoidea. PeerJ 6:e4668 https://doi.org/10.7717/peerj.4668 Taxonomy The name ''Mycterosuchus'' was coined for ''Steneosaurus nasutus'' by Andrews in 1913 in his catalogue of thalattosuchians from the Oxford Clay of southern England. ''Mycterosuchus nasutus'' was synonymized with ''Steneosaurus leedsi'' by Adams-Tresmand in 1987, but is recovered as a distinct species in the cladistic analysis of Osi ''et al''. of 2018.S. M. Adams-Tresman. 1987. The Callovian (Midde Jurassic) teleosaurid marine c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jurassic Period
The Jurassic ( ) is a geologic period and stratigraphic system that spanned from the end of the Triassic Period million years ago (Mya) to the beginning of the Cretaceous Period, approximately Mya. The Jurassic constitutes the middle period of the Mesozoic Era and is named after the Jura Mountains, where limestone strata from the period were first identified. The start of the Jurassic was marked by the major Triassic–Jurassic extinction event, associated with the eruption of the Central Atlantic Magmatic Province. The beginning of the Toarcian Stage started around 183 million years ago and is marked by an extinction event associated with widespread oceanic anoxia, ocean acidification, and elevated temperatures likely caused by the eruption of the Karoo-Ferrar large igneous provinces. The end of the Jurassic, however, has no clear boundary with the Cretaceous and is the only boundary between geological periods to remain formally undefined. By the beginning of the Jurassic, t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Teleosauroidea
Teleosauroidea is an extinct superfamily of thalattosuchian crocodyliforms living from the Early Jurassic to the Early Cretaceous The Early Cretaceous ( geochronological name) or the Lower Cretaceous (chronostratigraphic name), is the earlier or lower of the two major divisions of the Cretaceous. It is usually considered to stretch from 145 Ma to 100.5 Ma. Geology Pro .... References Thalattosuchians Animal superfamilies {{Paleo-archosaur-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indosinosuchus
''Indosinosuchus'' ("Indochinese crocodile") is a genus of teleosaurid neosuchian that lived during the Late Jurassic in what is now Thailand. It contains two species, the type species ''I. potamosiamensis'' and ''I. kalasinensis'', both recovered from the lower Phu Kradung Formation. It is unique among other named thalattosuchians, with its remains discovered from freshwater deposits, suggesting that at least some members of this group didn't live in the sea. It was a relatively large reptile, measuring long and weighing . The age of ''Indosinosuchus'' is unclear, as vertebrate fossils like ''Indosinosuchus'' support a Late Jurassic age, while palynological data suggests an Early Cretaceous (Berriasian In the geological timescale, the Berriasian is an age/stage of the Early/Lower Cretaceous. It is the oldest subdivision in the entire Cretaceous. It has been taken to span the time between 145.0 ± 4.0 Ma and 139.8 ± 3.0 Ma (million years ago) ...) age. Racey and Goodall ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Platysuchus Multiscrobiculatus
''Platysuchus'' ("flat crocodile") is an extinct genus of teleosaurid crocodyliform from the Early Jurassic (Toarcian) of southern Germany and Luxembourg. Taxonomy ''Platysuchus'' was originally described as a member of the genus ''Mystriosaurus ''Mystriosaurus'' is an extinct genus of teleosaurid crocodyliform from the Early Jurassic (Toarcian). Fossil specimens have been found in the Whitby Mudstone of England and Posidonia Shale of Germany. The only known species, ''M. laurillardi'', ...'', as ''M. multiscrobiculatus''. However, Westphal (1961) found ''M. multiscrobiculatus'' generically distinct from ''Mystriosaurus'' and renamed it ''Platysuchus''. Distribution ''Platysuchus'' has been found in Toarcian age marine deposits in southern Germany and Luxembourg.Michela M. Johnson, Mark T. Young, Stephen L. Brusatte, Ben Thuy & Robert Weis (2018): A catalogue of teleosauroids (Crocodylomorpha: Thalattosuchia) from the Toarcian and Bajocian (Jurassic) of southern Luxembourg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aeolodon
''Aeolodon'' is an extinct genus of teleosaurid crocodyliform reptile from the Late Jurassic (Tithonian) of Germany and France that was initially named as a species of ''Crocodylus'' in 1814. Although previously synonymized with ''Steneosaurus'', recent cladistic analysis considers it distantly related to the ''Steneosaurus'' type species and the type species is ''A. priscus'', named in 1830 and described in 2020. The holotype of ''Aeolodon priscus'' was found in the Mörnsheim Formation of Daiting, Bavaria, Germany, in the same quarry that produced the ''Geosaurus giganteus'' holotype and the assigned specimen was discovered in the Canjuers conservation Lagerstätte of Var, France. See also *List of marine reptiles Following is a list of marine reptiles, reptiles which are adapted to life in marine or brackish environments. Extant The following marine reptiles are species which are currently extant or recently extinct. Crocodiles :*'' Crocodylus'' ::' ... References ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Platysuchus
''Platysuchus'' ("flat crocodile") is an extinct genus of teleosaurid crocodyliform from the Early Jurassic (Toarcian) of southern Germany and Luxembourg. Taxonomy ''Platysuchus'' was originally described as a member of the genus ''Mystriosaurus ''Mystriosaurus'' is an extinct genus of teleosaurid crocodyliform from the Early Jurassic (Toarcian). Fossil specimens have been found in the Whitby Mudstone of England and Posidonia Shale of Germany. The only known species, ''M. laurillardi'', ...'', as ''M. multiscrobiculatus''. However, Westphal (1961) found ''M. multiscrobiculatus'' generically distinct from ''Mystriosaurus'' and renamed it ''Platysuchus''. Distribution ''Platysuchus'' has been found in Toarcian age marine deposits in southern Germany and Luxembourg.Michela M. Johnson, Mark T. Young, Stephen L. Brusatte, Ben Thuy & Robert Weis (2018): A catalogue of teleosauroids (Crocodylomorpha: Thalattosuchia) from the Toarcian and Bajocian (Jurassic) of southern Luxembourg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
