About: Eopneumatosuchus

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An Entity of Type : owl:Thing, within Data Space : 134.155.108.49:8890 associated with source dataset(s)

Eopneumatosuchus is an extinct basal crocodyliform for which Fossils have been found at two localities within the Kayenta Formation of Arizona. Both localities are around 20 miles southeast of the Grand Canyon and in close proximity to one another. The localities probably date back to the Early Jurassic, most likely to the Sinemurian stage.

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rdfs:label	Eopneumatosuchus
rdfs:comment	Eopneumatosuchus is an extinct basal crocodyliform for which Fossils have been found at two localities within the Kayenta Formation of Arizona. Both localities are around 20 miles southeast of the Grand Canyon and in close proximity to one another. The localities probably date back to the Early Jurassic, most likely to the Sinemurian stage.
sameAs	dbr:Eopneumatosuchus
dcterms:subject	Prehistoric reptiles of North America Jurassic crocodylomorpha Terrestrial crocodiles
dbkwik:fossil/prop...iPageUsesTemplate	dbkwik:resource/SYyNFxfvZLgCXGOrXYcTMg== dbkwik:resource/boLxLtoGYhqjsf6tb5GqmQ== dbkwik:resource/Fy4YvbW7sn4v4GYzCibvcQ== dbkwik:resource/n4PVtx5vohjUiAOcImVxnw==
Name	Eopneumatosuchus
fossil range	Early Jurassic
Species	(Crompton and Smith, 1980 ) * E. colberti
Genus	(Crompton and Smith, 1980) Eopneumatosuchus
Class	Reptile
Suborder	Crocodyliformes
Order	Crocodylomorpha
Infraclass	Archosauromorpha
abstract	Eopneumatosuchus is an extinct basal crocodyliform for which Fossils have been found at two localities within the Kayenta Formation of Arizona. Both localities are around 20 miles southeast of the Grand Canyon and in close proximity to one another. The localities probably date back to the Early Jurassic, most likely to the Sinemurian stage. Eopneumatosuchus was initially considered to be a protosuchian, first proposed when the genus was named in 1980. However, this classification was later questioned on the basis of several features of the holotype material, and as a result it is no longer considered to be within Protosuchia. Particular features of the posterior part of the cranium, the only material associated with the genus, suggest that Eopneumatosuchus may have close relations with Early Jurassic teleosaurs. The large supratemporal fenestrae of Eopneumatosuchus are characteristic of longirostrine crocodilians. Despite the similar cranial morphology with crocodilians, the genus is currently regarded as a basal crocodyliform. Nonetheless, it is considered to be more derived than protosuchians such as Protosuchus, found from the Moenave Formation, whose deposition preceded that of the Kayenta Formation. The basal cranium has many cavities that make up a complex typanic pneumatic system for which the genus is named. These types of cavities can also be seen in some protosuchians such as Protosuchus and Hemiprotosuchus, although they are less elongated than in Eopneumatosuchus.

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