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Hemiauchenia macrocephala

Mammalia - Artiodactyla - Camelidae

Taxonomy
Holomeniscus macrocephalus was named by Cope (1893).

It was synonymized subjectively with Camelops vitakerianus by Wortman (1898); it was recombined as Tanupolama macrocephala by Hibbard and Dalquest (1962), Webb (1965) and Slaughter (1966); it was recombined as Hemiauchenia macrocephala by Webb (1974), Breyer (1977), Kurten and Anderson (1980), Dalquest (1992), Honey et al. (1998) and Meachen (2005).

Synonyms
Synonymy list
YearName and author
1893Holomeniscus macrocephalus Cope p. 85
1898Camelus americanus Wortman p. 133 fig. 21
1925Lama stevensi Merriam and Stock p. 39 figs. 1 - 4
1928Tanupolama americana Stock
1928Tanupolama stevensi Stock
1929Prochenia americana Frick
1930Lama hollomani Hay and Cook
1945Tanupolama blancoensis Meade
1953Tanupolama hollomani Meade
1962Tanupolama macrocephala Hibbard and Dalquest
1962Tanupolama seymourensis Hibbard and Dalquest
1965Tanupolama americana Webb
1965Tanupolama macrocephala Webb
1965Tanupolama stevensi Webb
1965Tanupolama blancoensis Webb p. 34
1965Tanupolama hollomani Webb p. 34
1965Tanupolama seymourensis Webb p. 34
1966Tanupolama blancoensis Slaughter p. 84
1966Tanupolama hollomani Slaughter p. 84
1966Tanupolama macrocephala Slaughter p. 84
1968Tanupolama stevensi Miller
1974Hemiauchenia blancoensis Webb
1974Hemiauchenia macrocephala Webb
1974Hemiauchenia seymourensis Webb
1977Hemiauchenia blancoensis Breyer
1977Hemiauchenia macrocephala Breyer
1980Hemiauchenia blancoensis Kurten and Anderson p. 306
1980Hemiauchenia macrocephala Kurten and Anderson p. 308
1990Hemiauchenia blancoensis Schultz
1992Hemiauchenia macrocephala Dalquest
1994Hemiauchenia blancoensis Kelly
1995Hemiauchenia seymourensis Webb and Stehli
1998Hemiauchenia blancoensis Honey et al.
1998Hemiauchenia macrocephala Honey et al.
2005Hemiauchenia seymourensis Cisneros p. 250
2005Hemiauchenia macrocephala Meachen p. 438

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

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
J. C. Merriam and C. Stock 1925 (Lama stevensi)Type approaching in size the existing llama. Lower molars with enamel of internal faces not as distinctly folded as in existing llama. MI with median external style. M2 and M3 with antero-external style not as well developed as in Lama. Posterior or third lobe in M3 not separated from second lobe as distinctly as in the corresponding tooth of the Recent Lama.