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Procaimanoidea utahensis

Description

Procaimanoidea ("Before Caiman-forms") is an extinct genus of alligatorid from the Eocene of North America. It was named posthumously in 1946 by Charles W. Gilmore; the type species is P. utahensis, from the Uintan (middle Eocene) of Utah. It is based on USNM 15996, a nearly complete skull and partial left hind leg. A second species, P. kayi, was named in 1941 by C.C. Mook as a species of Hassiacosuchus, for remains from the Bridgerian (early Eocene) of Wyoming. It was reassigned to Procaimanoidea in 1967 by Wassersug and Hecht. Procaimanoidea was a small alligatorid, and slightly heterodont, the last four teeth on each side of the jaws having blunt tips.


Source Data
SourceIDLink
Global Biodiversity Information Facility ID (GBIF)4967656https://www.gbif.org/species/4967656
PaleoBioDB ID (PBDB)96544https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=96544
Rankspecies
Taxonomy (GBIF)Life : Animalia : Chordata : Reptilia : Crocodylia : Crocodylidae : Procaimanoidea : Procaimanoidea utahensis
Taxonomy (PBDB)Life : Animalia : Chordata : Reptilia : Crocodylia : Alligatoridae : Procaimanoidea : Procaimanoidea utahensis
Taxonomic Status (GBIF)accepted
Classification
(PBDB,GBIF)
RankNameAuthor
-Eukaryota
-OpisthokontaCavalier-Smith 1987
kingdomAnimalia
-TriploblasticaLankester 1877
-NephrozoaJondelius et al. 2002
-DeuterostomiaGrobben 1908
phylumChordataHaeckel 1847
subphylumVertebrataLamarck 1801
superclassGnathostomataGegenbauer 1874
-Osteichthyes
-SarcopterygiiRomer 1955
subclassDipnotetrapodomorpha
subclassTetrapodomorpha
-Tetrapoda
-ReptiliomorphaSäve-Söderbergh 1934
-AnthracosauriaSäve-Söderbergh 1934
-Batrachosauria
-Cotylosauria
-AmniotaHaeckel 1866
-SauropsidaHuxley 1864
classReptiliaLaurenti 1768
subclassEureptilia
-RomeriidaGauthier et al. 1988
-Diapsida
-Eosuchia
-NeodiapsidaBenton 1985
-SauriaGauthier 1984
-Archosauromorpha
-CrocopodaEzcurra 2016
-ArchosauriformesGauthier 1986
-EucrocopodaEzcurra 2016
-Archosauria
-Pseudosuchia
-SuchiaKrebs 1974
-ParacrocodylomorphaParrish 1993
-Loricata
-Crocodylomorpha
suborderCrocodyliformesHay 1930
-MesoeucrocodyliaWhetstone and Whybrow 1983
-NeosuchiaClark 1988
suborderEusuchiaHuxley 1875
-Crocodylia
-BrevirostresCuvier
superfamilyAlligatoroideaGray 1844
-GlobidontaBrochu 1999
familyAlligatoridaeGray 1844
subfamilyAlligatorinaeCuvier 1807
genusProcaimanoideaGilmore 1946
speciesProcaimanoidea utahensisGilmore 1946
Generic NameProcaimanoidea
Scientific NameProcaimanoidea utahensis Gilmore, 1946
Opinions (PBDB)
NameRankOpinionEvidenceAuthor
Procaimanoidea utahensisspeciesbelongs to Procaimanoideastated with evidenceGilmore, 1946
Status (PBDB)extinct
Taxon Size (PBDB)1
First Recorded Appearance46.2 - 40.4 Ma
Eocene
Last Recorded Appearance46.2 - 40.4 Ma
Eocene
Environmentmarine (based on Mesoeucrocodylia)
Motilityactively mobile (based on Osteichthyes)
Dietcarnivore (based on Crocodylia)
Taphonomyphosphatic (based on Vertebrata)
Primary Reference (PBDB)C. W. Gilmore. 1946. A new crocodilian from the Eocene of Utah. Journal of Paleontology 20(1):62-67
Wikipediahttps://en.wikipedia.org/wiki/Procaimanoidea_utahensis

Fossil Distribution

Synonymy List

YearName and Author
1946Procaimanoidea utahensis Gilmore p. 62
1967Procaimanoidea utahensis Wassersug and Hecht p. 32

References

Gilmore C. W. (1946) A new crocodilian from the Eocene of Utah, Journal of Paleontology 20 1, 62-67
Wassersug R. J., Hecht M. K. (1967) The status of the crocodylid genera Procaimanoidea and Hassiacosuchus in the New World, Herpetologica 23 1, 30-34
Data courtesy of: PBDB: The Paleobiology Database, Creative Commons CC-BY licenced. , GBIF: the Global Biodiversity Information Facility, various licences, iDigBio, various licences, and EOL: The Encyclopedia of Life (Open Data Public Domain). Because fossils are made of minerals too!
 
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