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Pristichampsus - Wikipedia

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(Redirected from Pristichampsidae)

Pristichampsus Temporal range: Eocene, 47.8–41.2 Ma PreꞒ Ꞓ O S D C P T J K Pg N Lutetian

Life reconstruction of Pristichampsus
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Clade:	Archosauria
Clade:	Pseudosuchia
Clade:	Crocodylomorpha
Clade:	Crocodyliformes
Order:	Crocodilia
Family:	†Pristichampsidae
Genus:	†Pristichampsus Gervais, 1853
Type species
†Pristichampsus rollinatii (Gray, 1831)
Species
†P. birjukovi? Efimov, 1988 †P. kuznetzovi? Efimov, 1988
Synonyms
Crocodylus rollinatii Gray, 1831 Limnosaurus ziphodon? (Marsh, 1871)

Pristichampsus (from Greek: πρῐ́στῐς prístis, 'saw' and Greek: χαμψαι champsai, 'crocodile') is a non-diagnostic and potentially dubious extinct genus of crocodylian from France and possibly also Kazakhstan that is part of the monotypic Pristichampsidae family. As the type species, Pristichampsus rollinatii, was based on insufficient material when described in 1831 and 1853,^[1]^[2] the taxonomic status of the genus is in doubt, and other species have been referred to other genera, primarily Boverisuchus.^[3]

History

Restoration of *Pristichampsus* (middle) and other animals of the Eocene Clarno Formation (Clarno Nut Beds)

Pristichampsus was first described and named as a species of Crocodylus, C. rollinatii, by John Edward Gray in 1831 on the basis of remains from the Lutetian Sables du Castrais Formation of France.^[1] Paul Gervais (1853) assigned this species to its own genus, creating the new combination Pristichampsus rollinatii.^[2]

Other species have been referred to this genus. The genera Boverisuchus and Weigeltisuchus from the Lutetian of Germany as well as Limnosaurus from North America were synonymized with Pristichampsus and their type species were reassigned to it. Langston (1975) found Limnosaurus to be based on non-diagnostic remains, and therefore considered it to be in its own genus, as a nomen dubium. He also reassigned Crocodylus vorax from the Lutetian of Wyoming and West Texas to Pristichampsus.

Efimov (1988) named two additional species of Pristichampsus, P. birjukovi and P. kuznetzovi from the Middle Eocene of Eastern Kazakhstan.

Following a revision of the genus Pristichampsus by Brochu (2013), P. rollinatii was found to be based on insufficiently diagnostic material and therefore is a nomen dubium. Boverisuchus was reinstated as a valid genus, and the species Weigeltisuchus geiseltalensis was considered to be synonymous with B. magnifrons. Brochu (2013) also reassigned P. vorax as the second species of Boverisuchus. According to Brochu (2013), material from the middle Eocene of Italy and Texas may represent other species of Boverisuchus.^[3]

References

^ ^a ^b J. E. Gray. (1831). Synopsis Reptilium. Part I. Cataphracta. Tortoises, Crocodiles, Enaliosauria. 1-85
^ ^a ^b P. Gervais. (1853). Observations regarding the fossil reptiles of France (second part). Comptes Rendus de l'Académie des Sciences à Paris. 36(11):470-474
^ ^a ^b Brochu, C. A. (2013). "Phylogenetic relationships of Palaeogene ziphodont eusuchians and the status of Pristichampsus Gervais, 1853". Earth and Environmental Science Transactions of the Royal Society of Edinburgh. 103 (3–4): 521–550. doi:10.1017/S1755691013000200. S2CID 128920027.

Extinct crocodilians

Kingdom: Animalia
Phylum: Chordata
Class: Sauropsida
Clade: Pseudosuchia
Clade: Eusuchia

Pseudosuchia

- see Pseudosuchia

Neosuchia

see Neosuchia
Crocodilia	see below↓

Basal crocodilians

Mekosuchinae	Australosuchus? Baru Harpacochampsa? Kalthifrons Kambara Mekosuchus Paludirex Quinkana? Trilophosuchus Ultrastenos Volia
Others	Albertosuchus Arenysuchus? Asiatosuchus Borealosuchus? Brachyuranochampsa Charactosuchus "Crocodylus" acer "Crocodylus" affinis Portugalosuchus? Pristichampsus? Prodiplocynodon Planocraniidae?

Alligatoroidea

Globidonta

Albertochampsa Arambourgia Brachychampsa Ceratosuchus Deinosuchus? Eocaiman Hassiacosuchus Leidyosuchus? Navajosuchus Procaimanoidea? Stangerochampsa
Orientalosuchina	Dongnanosuchus Eoalligator Eurycephalosuchus Jiangxisuchus Krabisuchus Orientalosuchus Protoalligator

Alligatoridae

Alligatorinae

Akanthosuchus? Allognathosuchus Arambourgia? Ceratosuchus? Chrysochampsa Hassiacosuchus? Navajosuchus? Procaimanoidea? Wannaganosuchus?
Alligator	A. hailensis A. mcgrewi A. mefferdi A. munensis A. olseni A. prenasalis A. thomsoni

Caimaninae

Acresuchus Bottosaurus Brachychampsa? Centenariosuchus Ceratosuchus? Chinatichampsus Culebrasuchus Eocaiman? Globidentosuchus Gnatusuchus Kuttanacaiman Mourasuchus Necrosuchus Orthogenysuchus Paranacaiman Paranasuchus Protocaiman Purussaurus Stangerochampsa? Tsoabichi Wannaganosuchus?
Melanosuchus	M. fisheri M. latrubessei
Caiman	C. australis C. brevirostris C. gasparinae C. venezuelensis C. wannlangstoni

"Crocodylus" megarhinus? Kinyang? Quinkana? Tzaganosuchus? Voay
Crocodylus	C. anthropophagus C. checchiai C. falconensis C. palaeindicus C. thorbjarnarsoni

Gavialoidea

Gavialidae

Sacacosuchus

Tomistominae
sensu stricto

Brasilosuchus? Gavialosuchus? Melitosaurus Paratomistoma? Thecachampsa?
Tomistoma	T. calaritanum? T. gaudense? T. lusitanicum? T. taiwanicum?

Gavialinae
sensu lato

Aktiogavialis Dadagavialis Gavialosuchus? Gryposuchus Hanyusuchus Harpacochampsa? Hesperogavialis Ikanogavialis Maomingosuchus? Paratomistoma? Penghusuchus Piscogavialis Rhamphosuchus Siquisiquesuchus Sutekhsuchus "Tomistoma" cairense? "Tomistoma" coppensi Toyotamaphimeia
Gavialis	G. bengawanicus G. breviceps? G. browni? G. curvirostris? G. leptodus? G. lewisi? G. pachyrhynchus? G. papuensis?

See also: Brevirostres
Gryposuchinae

Taxon identifiers
Pristichampsidae	Wikidata: Q13530206 EoL: 60776707 GBIF: 4822137 IRMNG: 104307 Open Tree of Life: 3606008
Pristichampsus	Wikidata: Q2455388 GBIF: 4822218 IRMNG: 1046286 Paleobiology Database: 38456
Pristichampsus rollinati	Wikidata: Q40646978 EoL: 60776709 Paleobiology Database: 266826

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