PBDB Taxon

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Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

Thalattosuchia (marine crocodile)

Reptilia

Taxonomy

Thalattosuchia was named by Fraas (1901) [original rank uncertain]. It is not extant. It was considered monophyletic by Gasparini et al. (2000) and Mueller-Töwe (2005) and Jouve (2009).

It was reranked as the infraorder Thalattosuchia by Walker (1970) and Buffetaut (1982); it was reranked as the unranked clade Thalattosuchia by Jouve et al. (2006), Pierce and Benton (2006), Bronzati et al. (2012), Barrientos-Lara et al. (2018), Martin et al. (2018), Sachs et al. (2019), Foffa et al. (2019) and Scheyer et al. (2024).

It was assigned to Crocodilia by Osborn (1904), Roxo (1937), Kuhn (1946) and Charig (1967); to Crocodylia by Walker (1970); to Mesosuchia by Buffetaut (1982); to Crocodylia by Kuhn (1966) and Hua et al. (2000); to Crocodyliformes by Gasparini et al. (2000) and Mueller-Töwe (2005); to Mesoeucrocodylia by Sereno et al. (2001), Sereno et al. (2003) and Pierce and Benton (2006); to Neosuchia by Jouve et al. (2006), Gasparini et al. (2006), Jouve (2009), Martin et al. (2010), Andrade et al. (2011) and Bronzati et al. (2012); and to Crocodylomorpha by Barrientos-Lara et al. (2018), Martin et al. (2018), Foffa et al. (2018), Sachs et al. (2019), Foffa et al. (2019) and Scheyer et al. (2024).

Subtaxa

Eoneustes, Metriorhynchidae (syn. Geosauridae), Metriorhynchoidea, Mystriosaurus (syn. Macrospondylus, Engyommasaurus), Peipehsuchus, Pelagosaurus (syn. Mosellaesaurus), Steneosaurus gerthi, Teleidosaurus, Teleosauridae, Teleosauroidea, Turnersuchus

Synonyms

Mesosauria was named by Giebel (1847).

It was synonymized subjectively with Thalattosuchia by Karl et al. (2007).
Steneosaurus gerthi was named by Huene (1927).

It was considered a nomen dubium by Gasparini and Fernández (2005).

Synonymy list

Year	Name and author
1847	Mesosauria Giebel
1901	Thalattosuchia Fraas
1904	Thalattosuchia Osborn p. 100
1927	Steneosaurus gerthi Huene
1937	Thalattosuchia Roxo p. 44
1946	Thalattosuchia Kuhn p. 64
1966	Thalattosuchia Kuhn p. 86
1967	Thalattosuchia Charig p. 710
1970	Thalattosuchia Walker p. 369
1982	Thalattosuchia Buffetaut p. 18
2000	Thalattosuchia Gasparini et al.
2000	Thalattosuchia Hua et al. p. 472
2001	Thalattosuchia Sereno et al. p. 1518
2003	Thalattosuchia Sereno et al.
2005	Thalattosuchia Mueller-Töwe
2006	Thalattosuchia Gasparini et al. p. 72
2006	Thalattosuchia Jouve et al.
2006	Thalattosuchia Pierce and Benton p. 622
2009	Thalattosuchia Jouve
2010	Thalattosuchia Martin et al.
2011	Thalattosuchia Andrade et al.
2012	Thalattosuchia Bronzati et al.
2018	Thalattosuchia Barrientos-Lara et al.
2018	Thalattosuchia Foffa et al.
2018	Thalattosuchia Martin et al.
2019	Thalattosuchia Foffa et al.
2019	Thalattosuchia Sachs et al.
2024	Thalattosuchia Scheyer et al.

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Deuterostomia
phylum	Chordata	Haeckel 1874
subphylum	Vertebrata
superclass	Gnathostomata
—	Osteichthyes	()
subclass	Sarcopterygii	()
subclass	Dipnotetrapodomorpha	(Nelson 2006)
subclass	Tetrapodomorpha	()
—	Tetrapoda
—	Reptiliomorpha
—	Anthracosauria
subclass	Amphibiosauria	Kuhn 1967
—	Cotylosauria	()
—	Amniota

Rank	Name	Author
—	Sauropsida
class	Reptilia
subclass	Eureptilia	()
—	Romeriida
—	Diapsida	()
—	Archosauromorpha	(Huene 1946)
—	Crocopoda
—	Archosauriformes	Gauthier 1986
—	Eucrocopoda
—	Archosauria	()
—	Pseudosuchia	(Zittel 1890)
—	Suchia	Krebs 1974
—	Paracrocodylomorpha
—	Loricata	(Merrem 1820)
—	Crocodylomorpha	()
—	Thalattosuchia	()
—	Thalattosuchia	()

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

Unr. †Thalattosuchia Fraas 1901 [marine crocodile]

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G. †Eoneustes Young et al. 2010

†Eoneustes gaudryi Collot 1905

Fm. †Metriorhynchidae Fitzinger 1843

G. †Capellineosuchus Romer 1966

Subfm. †Geosaurinae Lydekker 1889

G. †Dakosaurus Quenstedt 1856

†Dakosaurus andiniensis Vignaud and Gasparini 1996

†Dakosaurus maximus Plieninger 1846

Invalid names: Dakosaurus gracilis Quenstedt 1885 [synonym], Dakosaurus lissocephalus Seeley 1869 [synonym], Megalosaurus schnaitheimii Bunzel 1871 [synonym]

Invalid names: Brachytaenius Merian 1842 [synonym], Plerodon Meyer 1839 [synonym]

Tr. †Geosaurini Cau and Fanti 2011

Subtr. †Geosaurina Foffa et al. 2018

G. †Ieldraan Foffa et al. 2018

G. †Purranisaurus Rusconi 1948

†Purranisaurus potens Rusconi 1948

Invalid names: Plesiosuchina Young et al. 2014 [empty]

G. †Geosaurus Cuvier 1824

†Geosaurus giganteus Sömmerring 1816

Invalid names: Brachytaenius perennis Meyer 1842 [synonym], Geosaurus sommerringi Meyer 1831 [synonym], Halilimnosaurus crocodiloides Ritgen 1826 [synonym], Mosasaurus bavaricus Holl 1829 [synonym]

†Geosaurus grandis Wagner 1858

†Geosaurus lapparenti Debelmas and Strannoloubsky 1957

†Geosaurus medius Wagner 1858

Invalid names: Halilimnosaurus Ritgen 1826 [synonym], Ltliminosaurus Romer 1966 [synonym]

G. †Neptunidraco Cau and Fanti 2011

†Neptunidraco ammoniticus Cau and Fanti 2011

Invalid names: Steneosaurus barettoni De Zigno 1883 [nomen dubium]

G. †Plesiosuchus Owen 1884

†Plesiosuchus manselii Hulke 1870

G. †Suchodus Lydekker 1890

†Suchodus durobrivensis Lydekker 1890

G. †Torvoneustes Andrade et al. 2010

†Torvoneustes carpenteri Wilkinson et al. 2008

†Torvoneustes coryphaeus Young et al. 2013

†Torvoneustes jurensis Girard et al. 2023

†Torvoneustes mexicanus Barrientos-Lara et al. 2016

G. †Tyrannoneustes Young et al. 2013

†Tyrannoneustes lythrodectikos Young et al. 2013

Subfm. †Metriorhynchinae Buchy 2008

G. †Gracilineustes Young et al. 2010

†Gracilineustes acutus Lennier 1887

†Gracilineustes leedsi Andrews 1913

Invalid names: Metriorhynchus laeve Andrews 1913 [synonym]

Tr. †Rhacheosaurini Young et al. 2011

G. †Cricosaurus Wagner 1858

†Cricosaurus albersdoerferi Sachs et al. 2021

†Cricosaurus araucanensis Gasparini and Dellape 1976

†Cricosaurus bambergensis Sachs et al. 2019

†Cricosaurus elegans Wagner 1852

†Cricosaurus gracilis Phillips 1871

†Cricosaurus lithographicus Herrera et al. 2013

†Cricosaurus macrospondylus Koken 1883

†Cricosaurus mexicanus Wieland 1910

†Cricosaurus puelchorum Herrera et al. 2021

†Cricosaurus rauhuti Herrera et al. 2021

†Cricosaurus saltillensis Buchy et al. 2006

†Cricosaurus schroderi Kuhn 1936

†Cricosaurus schroederi Kühn 1936

†Cricosaurus suevicus Fraas 1901

†Cricosaurus vignaudi Frey et al. 2002

Invalid names: Enaliosuchus Koken 1883 [synonym], Neustosaurus Raspail 1842 [nomen dubium]

G. †Maledictosuchus Parrilla-Bel et al. 2013

†Maledictosuchus nuyivijanan Barrientos-Lara et al. 2018

†Maledictosuchus riclaensis Parrilla-Bel et al. 2013

G. †Rhacheosaurus Meyer 1831

†Rhacheosaurus gracilis Meyer 1831

G. †Thalattosuchus Young et al. 2021

†Thalattosuchus superciliosus de Blainville 1853

Invalid names: Metriorhynchus jaekeli Schmidt 1904 [synonym], Steneosaurus dasyceps Seeley 1869 [synonym], Teleosaurus superciliosus Deslongchamps 1867 [synonym]

G. †Metriorhynchus von Meyer 1830

†Metriorhynchus blainvillei Eudes-Deslongchamps 1867

†Metriorhynchus brachyrhynchus Eudes-Deslongchamps 1868

Invalid names: Metriorhynchus cultridens Andrews 1913 [synonym]

†Metriorhynchus casamiquelai Gasparini and Chong 1977

†Metriorhynchus geoffroyii Meyer 1832

†Metriorhynchus hastifer Eudes-Deslongchamps 1868

†Metriorhynchus littoreus Sauvage 1874

†Metriorhynchus moreli Deslongchamps 1867

†Metriorhynchus palpebosus Phillips 1871

†Metriorhynchus westermanni Gasparini 1980

Invalid names: Aggiosaurus Ambayrac 1913 [nomen dubium], Geosauridae Bonaparte 1850 [synonym]

Superfm. †Metriorhynchoidea Young 2010

G. †Magyarosuchus Osi et al. 2018

†Magyarosuchus fitosi Osi et al. 2018

G. †Opisuchus Aiglstorfer et al. 2019

†Opisuchus meieri Aiglstorfer et al. 2019

G. †Zoneait Wilberg 2015

†Zoneait nargorum Wilberg 2015

G. †Mystriosaurus Munster 1834

†Mystriosaurus laurillardi Kaup 1837

Invalid names: Steneosaurus brevior Tate and Blake 1876 [synonym]

Invalid names: Engyommasaurus Kaup 1834 [synonym], Macrospondylus Meyer 1830 [synonym]

G. †Peipehsuchus Young 1948

†Peipehsuchus teleorhinus Young 1948

G. †Pelagosaurus Bronn 1841

†Pelagosaurus typus Bronn 1841

Invalid names: Crocodilus temporalis de Blainville 1835 [synonym], Mosellaesaurus rostrominor Monard 1846 [synonym]

Invalid names: Mosellaesaurus Monard 1846 [synonym]

G. †Teleidosaurus Eudes-Deslongchamps 1869

†Teleidosaurus calvadosii Eudes-Deslongchamps 1866

†Teleidosaurus joberti Eudes-Deslongchamps 1867

Invalid names: Teleidosaurus bathonicus Mercier 1933 [nomen dubium]

Fm. †Teleosauridae Geoffroy 1831

G. †Crocodilaemus Jourdan 1857

†Crocodilaemus robustus Jourdan 1857

G. †Haematosaurus Sauvage 1874

†Haematosaurus lanceolatus Sauvage 1874

G. †Indosinosuchus Martin et al. 2018

†Indosinosuchus kalasinensis Johnson et al. 2020

†Indosinosuchus potamosiamensis Martin et al. 2018

G. †Mycterosuchus Andrews 1913

†Mycterosuchus nasutus Andrews 1909

G. †Platysuchus Westphal 1961

†Platysuchus multicrobiculatus Berckhemer 1929

G. †Steneosaurus Saint-Hilaire 1825

†Steneosaurus aalensis Meyer 1842

†Steneosaurus atelestatus Eudes-Deslongchamps 1863

†Steneosaurus blumembachi Eudes-Deslongchamps 1868

†Steneosaurus brevidens Phillips 1871

†Steneosaurus brevirostris Owen 1842

†Steneosaurus dasycephalus Seeley 1869

†Steneosaurus durobrivensis Andrews 1909

†Steneosaurus heberti Morel de Glasville 1876

Invalid names: Steneosaurus depressus Phizackerley 1951 [synonym], Steneosaurus meretrix Phizackerley 1951 [synonym]

†Steneosaurus lyceense Costa 1864

Invalid names: Streptospondylus lyceense Costa 1864 [objective synonym]

†Steneosaurus megarhinus Hulke 1871

†Steneosaurus oplites Eudes-Deslongchamps 1863

†Steneosaurus pictaviensis Bronzati et al. 2012

†Steneosaurus priscus Bronzati et al. 2012

†Steneosaurus roissyi Eudes-Deslongchamps 1868

†Steneosaurus rostrominor Saint-Hilaire 1825

†Steneosaurus rudis Sauvage 1874

†Steneosaurus temporalis Owen 1884

Invalid names: Glaphyrorhynchus Meyer 1842 [synonym], Leptocranius Bronn 1837 [synonym], Machimosaurus bathonicus Sauvage 1874 [nomen dubium], Machimosaurus rigauxi Sauvage 1874 [nomen dubium], Sericodon Meyer 1845 [synonym], Steneosaurus rostromajor Saint-Hilaire 1825 [nomen dubium]

G. †Teleosaurus Geoffroy 1825

†Teleosaurus asthenodeirus Owen 1842

†Teleosaurus brevior Owen 1884

†Teleosaurus cadomensis Lamouroux 1820

†Teleosaurus geoffroyi Deslongchamps 1868

†Teleosaurus lacunosae Quenstedt 1858

†Teleosaurus latifrons Owen 1884

†Teleosaurus ornati Quenstedt 1852

†Teleosaurus soemmeringii Holl 1829

Invalid names: Megalosaurus mersensis Lapparent 1955 [nomen dubium], Teleosaurinae Saint-Hilaire 1831 [empty]

Superfm. †Teleosauroidea Saint-Hilaire 1831

G. †Andrianavoay Johnson et al. 2020

†Andrianavoay baroni Newton 1893

G. †Bathysuchus Foffa et al. 2019

†Bathysuchus megarhinus Hulke 1871

G. †Charitomenosuchus Johnson et al. 2020

†Charitomenosuchus leedsi Andrews 1909

Invalid names: Stenosaurus teleosauroides Auer 1909 [synonym]

G. †Clovesuurdameredeor Johnson et al. 2020

†Clovesuurdameredeor stephani Hulke 1877

G. †Deslongchampsina Johnson et al. 2019

†Deslongchampsina larteti Eudes-Deslongchamps 1869

Tr. †Machimosaurini Jouve et al. 2016

G. †Lemmysuchus Johnson et al. 2018

†Lemmysuchus obtusidens Andrews 1909

G. †Machimosaurus

†Machimosaurus buffetauti Young et al. 2014

†Machimosaurus hugii Meyer 1837

Invalid names: Machimosaurus ferox Sauvage 1874 [synonym], Machimosaurus interruptus Sauvage 1874 [synonym], Steneosaurus hulkei Andrews 1913 [synonym]

†Machimosaurus mosae Sauvage and Lienard 1879

†Machimosaurus rex Fanti et al. 2016

Invalid names: Machimosaurus nowackianus Huene 1938 [nomen dubium]

G. †Yvridiosuchus Johnson et al. 2019

†Yvridiosuchus boutilieri Eudes-Deslongchamps 1868

G. †Neosteneosaurus Johnson et al. 2020

†Neosteneosaurus edwardsi Eudes-Deslongchamps 1867

G. †Plagiophthalmosuchus Johnson et al. 2020

†Plagiophthalmosuchus gracilirostris Westphal 1961

Invalid names: Teleosaurus chapmanni Buckland 1836 [synonym]

G. †Seldsienean Johnson et al. 2020

†Seldsienean megistorhynchus Saint-Hilaire 1866

Invalid names: Machimosauridae Johnson et al. 2022 [empty]

G. †Turnersuchus Wilberg et al. 2023

†Turnersuchus hingleyae Wilberg et al. 2023

Invalid names: Mesosauria Giebel 1847 [synonym], Steneosaurus gerthi Huene 1927 [nomen dubium]

Diagnosis

No diagnoses are available