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Allognathosuchus polyodon

Reptilia

Taxonomy
Diplocynodus polyodon was named by Cope (1873). Its type specimen is U.S.N.M. No. 4112, a mandible (left ramus of a lower jaw), and it is a 3D body fossil. It is the type species of Allognathosuchus.

It was recombined as Crocodilus polyodon by Cope (1882); it was recombined as Crocodylus polyodon by Hay (1902); it was recombined as Allognathosuchus polyodon by Mook (1921), Case (1925), Hay (1930), Simpson (1930), Mook (1961), Brochu (1999) and Brochu (2004).

Sister species lacking formal opinion data
A. brevirostris, A. weigelti

Synonymy list
YearName and author
1873Diplocynodus polyodon Cope p. 614
1882Crocodilus polyodon Cope p. 981
1902Crocodylus polyodon Hay p. 513
1921Allognathosuchus polyodon Mook pp. 108-109
1925Allognathosuchus polyodon Case p. 93–94
1930Allognathosuchus polyodon Hay p. 155
1930Allognathosuchus polyodon Simpson p. 3
1960Diplocynodus polyodon Mook p. 1
1961Allognathosuchus polyodon Mook p. 1
1999Allognathosuchus polyodon Brochu
2004Allognathosuchus polyodon Brochu

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
—Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
—Sauropsida
classReptilia
subclassEureptilia()
—Romeriida
—Diapsida()
RankNameAuthor
—Archosauromorpha(Huene 1946)
—Crocopoda
—ArchosauriformesGauthier 1986
—Eucrocopoda
—Archosauria()
—Pseudosuchia(Zittel 1890)
—SuchiaKrebs 1974
—Paracrocodylomorpha
—Loricata(Merrem 1820)
—Crocodylomorpha()
—Solidocrania
suborderCrocodyliformes
—MesoeucrocodyliaWhetstone and Whybrow 1983
—NeosuchiaClark 1988
suborderEusuchiaHuxley 1875
—Crocodylia(Owen 1842)
—Alligatoroidea(Gray 1844)
—Globidonta
—Alligatoridae(Gray 1844)
—Alligatorinae(Cuvier 1807)
genusAllognathosuchus
speciespolyodon(Cope 1873)

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.

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Diagnosis
ReferenceDiagnosis
C. C. Mook 1921Two very large teeth, separated by eight small teeth facing obliquely outward as well as upward. Jaw relatively narrow.
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: freshwaterg
Locomotion: actively mobilec
Life habit: amphibiousg
Diet: carnivoreg
Created: 2005-09-23 11:52:31
Modified: 2005-09-23 13:52:31
Source: g = genus, c = class, subp = subphylum
References: Hendy et al. 2009, Sullivan and Lucas 2003, Carroll 1988

Age range: base of the Bridgerian to the top of the Early/Lower Uintan or 50.30000 to 39.70000 Ma

Collections (2 total)


Time interval Ma Country or state Original ID and collection number
Bridgerian50.3 - 46.2USA (Wyoming) Allognathosuchus polyodon (16228)
Early/Lower Uintan46.2 - 39.7USA (Colorado) Allognathosuchus polyodon (16623)