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Promerycochoerus superbus

Mammalia - Ungulata - Merycoidodontidae

Taxonomy
Oreodon superbus was named by Leidy (1870). It is a 3D body fossil. It is the type species of Promerycochoerus.

It was recombined as Eporeodon superbus by Marsh (1875); it was recombined as Eucrotaphus superbus by Cope (1880); it was recombined as Merycochoerus superbus by Cope (1884) and Lander (1998); it was recombined as Paracotylops superbus by Matthew (1901); it was recombined as Promerycochoerus superbus by Douglass (1901), Douglass (1906), Loomis (1920), Thorpe (1921), Thorpe (1924), Thorpe (1937), Schultz and Falkenbach (1949), Fremd (1994), Stevens and Stevens (2007) and Strganac (2011).

Synonyms
Synonymy list
YearName and author
1870Oreodon superbus Leidy
1875Eporeodon superbus Marsh p. 250
1876Merycochoerus temporalis Bettany
1880Eucrotaphus superbus Cope
1884Merycochoerus superbus Cope p. 522
1901Promerycochoerus superbus Douglass
1901Paracotylops superbus Matthew
1906Promerycochoerus superbus Douglass p. 566
1920Promerycochoerus superbus Loomis
1921Promerycochoerus superbus Thorpe p. 220
1924Promerycochoerus superbus Thorpe
1937Promerycochoerus superbus Thorpe p. 141 figs. Figs. 97-105; PI. L, figs. 3-4
1949Promerycochoerus superbus Schultz and Falkenbach p. 107 figs. 2-5, 11, 12, 25, 26
1994Promerycochoerus superbus Fremd
1998Merycochoerus superbus Lander
2007Promerycochoerus superbus Stevens and Stevens p. 160
2011Promerycochoerus superbus Strganac p. 32

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda()
Reptiliomorpha
Anthracosauria
Batrachosauria()
Cotylosauria()
Amniota
RankNameAuthor
Synapsida()
Therapsida()
infraorderCynodontia()
Epicynodontia
infraorderEucynodontia
Probainognathia
Mammaliamorpha
Mammaliaformes
classMammalia
subclassTribosphenida()
infraclassEutheria()
orderUngulata(Linnaeus 1766)
orderArtiodactyla()
familyMerycoidodontidae
subfamilyPromerycochoerinae
genusPromerycochoerus
speciessuperbus(Leidy 1870)

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.

Diagnosis
ReferenceDiagnosis
C. B. Schultz and C. H. Falkenbach 1949SKULL:Approximate size of P. carrikeri; smaller than examples of P. macrostegus; supraoccipital wings moderately spread, greatly produced posterior to the occipital condyles; sagittal crest moderately long, high, and sloping down posteriorly; frontals moderately wide; nasal long and rounded laterally, but not noticeably retracted; anterior nasal-maxilla contact P 1 ; zygomatic arch with straight internal posterior border (not hooked as in P. carrikeri), and extending posteriorly beyond the region above the postglenoid process, not to the degree found in examples of P. carrikeri, but more so than in examples of P. (Pseudopromerycochoerus); infraorbital foramen above re- gion of posterior portion of P'; lacrimal fossa larger and deeper than in P. carrikeri,· slight facial depression above premolar region; muzzle joined for short distance; occipital condyles of moderate size; paroccipital process wide at base with slight forward twist; bulla well inflated, high and suboval in outline, extending downward beyond the inferior border of the postglenoid process; postglenoid process robust and high; posterior palate projecting posteriorly beyond M3 (not to the extent found in examples of P. superbus chelydra).
MANDIBLE:Moderately robust; ramus of same depth until reaching a point below Ma; inferior border straight to a point below the posterior of Ma, then curving gradually downward.
DENTITION:Equal to smaller examples of P. carrikeri; average smaller than average examples of P. carrikeri or P. latidens.