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Hemiauchenia

Mammalia - Artiodactyla - Camelidae

Synonyms
Synonymy list
YearName and author
1878Auchenia vitakeriana Cope p. 380
1880Hemiauchenia Gervais and Ameghino
1884Holomeniscus Cope p. 16
1884Holomeniscus vitakeriana Cope p. 17
1898Camelops vitakerianus Wortman
1928Tanupolama Stock p. 31
1940Tanupolama Olson p. 54
1945Tanupolama Simpson p. 150
1965Tanupolama vitakerianus Webb
1965Tanupolama Webb p. 44
1980Hemiauchenia Kurten and Anderson p. 306
1988Hemiauchenia Carroll
1998Hemiauchenia Honey et al. p. 451
2004Hemiauchenia Webb and Meachen p. 350
2005Hemiauchenia Cisneros p. 250
2005Hemiauchenia Meachen p. 438
2005Hemiauchenia Ruez, Jr. p. 742

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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()
superfamilyCameloidea
familyCamelidae
subfamilyCamelinaeGray 1821
tribeLaminiWebb 1965
genusHemiaucheniaGervais and Ameghino 1880

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
S. D. Webb 1965 (Tanupolama)Tall, slender, llamalike camelid; larger than extant Lama. Cranium elongate, especially in rostral region; dorsal surface flat; maxillary fossa deep; condyloid fossa narrow; paroccipital process short; posterolateral groove in bulla deep and nar- row; bulla separated from basioccipital as in Lama. Ventral surface of mandible straight. Dental for- mula: I 1/3, C 1/1, P 2/3-1, M 3/3; upper molars with moderate to strong styles; external ribs weaker than in Lama; P 1 and P 3 present or absent; D13 often retained (see Dentition); lower molars with lingual face flatter than in Lama; "llama buttresses" seldoin as ·well.developed as in Lama but stronger than in Camelops or Palaeolama; M8 with third lo~e more strongly connected than in Lama (except in early wear stages) . Limbs much longer than in Lama; metapodials about twice as long as in Lama.