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Ticholeptus zygomaticus

Mammalia - Artiodactyla - Merycoidodontidae

Taxonomy
Ticholeptus zygomaticus was named by Cope (1878) [genotype]. Its type specimen is AMNH 8112, a partial skull (Crushed skull (lacking nasals, frontals, and a portion of the occipital region) with I1-M3 (P1 br.) and mandible with i1-m3), and it is a 3D body fossil. It is the type species of Ticholeptus.

It was recombined as Merychyus zygomaticus by Cope (1884), Scott (1890) and Scott (1893).

Synonyms
Synonymy list
YearName and author
1878Ticholeptus zygomaticus Cope p. 380
1884Merychyus zygomaticus Cope p. 545
1890Merychyus zygomaticus Scott
1893Merychyus zygomaticus Scott
1903Poatrephes paludicola Douglass
1906Ticholeptus zygomaticus Douglass p. 567
1907Ticholeptus zygomaticus Douglass
1920Ticholeptus zygomaticus Loomis
1937Ticholeptus zygomaticus Thorpe
1941Ticholeptus zygomaticus Schultz and Falkenbach p. 85
1988Ticholeptus zygomaticus Kelly and Lander
1998Ticholeptus zygomaticus Lander
2007Ticholeptus zygomaticus Stevens and Stevens p. 164

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
OlfactoresJefferies 1991
subphylumVertebrata
Gnathostomata()
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda()
Reptiliomorpha
Anthracosauria
Batrachosauria()
Cotylosauria()
RankNameAuthor
Amniota
Synapsida()
Therapsida()
infraorderCynodontia()
Epicynodontia
infraorderEucynodontia
Probainognathia
Mammaliamorpha
Mammaliaformes
classMammalia
orderArtiodactyla()
suborderTylopoda()
superfamilyOreodontoidea
familyMerycoidodontidaeThorpe 1923
subfamilyTicholeptinae
genusTicholeptus
specieszygomaticus

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 1941
SKULL.-Slightly longer but approximately same width as that of T. hypsodus; zygomatic arch similar to that of T. hypsodus and more robust than in T. tooheyi; postglenoid process slightly lighter than in T. hypsodus.
MANDIBLE.-Equal to some examples of T. hypsodus.
DENTITION.-Superior and inferior series approximately equal to large examples of those of T. hypsodus, but slightly heavier and longer than average of that species.
LIMBS.-Unknown.