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Merycoides pariogonus

Mammalia - Artiodactyla - Merycoidodontidae

Taxonomy
Merychyus pariogonus was named by Cope (1884). Its type specimen is AMNH 8113, a partial skull (Posterior portion of skull with M2-M3 and partial mandible with m2-m3), and it is a 3D body fossil.

It was recombined as Pseudodesmatochoerus pariogonus by Schultz and Falkenbach (1954); it was recombined as Merycoides pariogonus by Lander (1998) and Stevens and Stevens (2007).

Synonymy list
YearName and author
1884Merychyus pariogonus Cope p. 542
1954Pseudodesmatochoerus pariogonus Schultz and Falkenbach p. 211
1998Merycoides pariogonus Lander
2007Merycoides pariogonus Stevens and Stevens p. 160

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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
orderArtiodactyla()
suborderTylopoda()
superfamilyOreodontoidea
familyMerycoidodontidaeThorpe 1923
subfamilyEporeodontinae
genusMerycoides
speciespariogonus()

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 1954SKULL: Medium size; light; dolichocephalic; supraoccipital wings not widely spread, extending short distance posterior to condyles; sagittal crest very low and depressed in medial region; brain case inflated, elongated; frontals moderately wide, slight protrusion at midline; supraorbital foramen with anterior groove; orbit large, suggests being longer vertically than wide anteroposteriorly; zygomatic arch very light, slight inward curve or notch posterior to orbit; malar shallow below orbit, but robust for size of zygomatic arch; occipital condyles moderately large; paroccipital process wide at base, tapering rapidly to inferior border, long axis antero- posteriorly to length of skull; bulla inflated, high, longer anteroposteriorly than wide laterally; postglenoid process moderately robust, wider laterally than anteroposteriorly.
MANDIBLE: Moderately light; inferior border with noticeable downward curve posterior to M 3 ; ascending ramus wide anteroposteriorly; condyle of moderate size, external border higher and slightly more anterior than internal border.
DENTITION: Moderately light.
LIMBS: Light. (Known from referred fragments only.)