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Leptauchenia

Taxonomy

Leptauchenia was named by Leidy (1856). It is not extant. Its type is Leptauchenia decora.

It was assigned to Merycoidodontidae by Leidy (1856) and Lander (1998).

Species

L. decora (syn. Hadroleptauchenia primitiva, L. harveyi, Pithecistes breviceps, Pithecistes brevifacies, Pithecistes facies, Pithecistes tanneri, Pseudocyclopidius frankforteri) (type species), L. eiselyi, L. major (syn. Brachymeryx feliceps, Cyclopidius emydinus, Cyclopidius incisivus, Cyclopidius lullianus, Cyclopidius simus, Hadroleptauchenia extrema, Hadroleptauchenia shanafeltae, L. densa, L. margeryae, L. martini, L. parasimus, Pithecistes altageringensis, Pithecistes copei), L. orellaensis

Sister genera

Aclistomycter, Bathygenys (syn. Megabathygenys, Parabathygenys), Brachycrus (syn. Pronomotherium), Desmatochoerus, Eporeodon (syn. Hypselochoerus, Pseudodesmatochoerus), Hypsiops (syn. Pseudomesoreodon, Submerycochoerus), Limnenetes, Mediochoerus, Merycochoerus (syn. Megoreodon, Paracotylops, Promerycochoerus, Superdesmatochoerus), Merycoides (syn. Paramerychyus), Merycoidodon (syn. Blickohyus, Genetochoerus, Oreodon, Otionohyus, Paramerycoidodon, Prodesmatochoerus, Promesoreodon, Subdesmatochoerus), Mesoreodon, Miniochoerus (syn. Parastenopsochoerus, Platyochoerus, Stenopsochoerus), Oreodontoides, Oreonetes, Paroreodon (syn. Epigenetochoerus), Phenacocoelus, Sespia (syn. Megasespia), Ticholeptus (syn. Poatrephes)

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Synonyms

Chelonocephalus was named by Thorpe (1921).

It was synonymized subjectively with Cyclopidius by McKenna and Bell (1997).
Brachymeryx was named by Cope (1877). It is not extant. Its type is Brachymeryx feliceps.

It was synonymized subjectively with Cyclopidius by Cope (1884), Loomis (1924), Thorpe (1937), Koerner (1940), Schultz and Falkenbach (1968) and McKenna and Bell (1997); it was synonymized subjectively with Leptauchenia by CoBabe (1996) and Lander (1998).
Cyclopidius was named by Cope (1877). It is not extant. Its type is Cyclopidius simus.

It was synonymized subjectively with Leptauchenia by CoBabe (1996) and Lander (1998).

It was assigned to Leptaucheniini by McKenna and Bell (1997).
Hadroleptauchenia was named by Schultz and Falkenbach (1968). Its type is Hadroleptauchenia shanafeltae.

It was synonymized subjectively with Leptauchenia by CoBabe (1996) and Lander (1998).

It was assigned to Leptaucheniini by McKenna and Bell (1997).
Pithecistes was named by Cope (1877). It is not extant. Its type is Pithecistes brevifacies.

It was synonymized subjectively with Cyclopidius by Matthew (1899), Thorpe (1921), Loomis (1925), Schlaikjer (1935), Thorpe (1937) and Koerner (1940); it was synonymized subjectively with Leptauchenia by CoBabe (1996) and Lander (1998).

It was assigned to Leptaucheniini by McKenna and Bell (1997).
Pseudocyclopidius was named by Schultz and Falkenbach (1968).

It was synonymized subjectively with Leptauchenia by CoBabe (1996) and Lander (1998).

It was assigned to Leptaucheniini by McKenna and Bell (1997).

Synonymy list

Year	Name and author
1856	Leptauchenia Leidy
1877	Pithecistes Cope p. 219
1877	Brachymeryx Cope p. 220
1877	Cyclopidius Cope p. 221
1878	Brachymeryx Cope
1878	Cyclopidius Cope
1878	Pithecistes Cope
1921	Chelonocephalus Thorpe p. 415
1968	Hadroleptauchenia Schultz and Falkenbach
1968	Pithecistes Schultz and Falkenbach
1968	Pseudocyclopidius Schultz and Falkenbach
1997	Cyclopidius McKenna and Bell p. 409
1997	Hadroleptauchenia McKenna and Bell p. 409
1997	Pithecistes McKenna and Bell p. 409
1997	Pseudocyclopidius McKenna and Bell p. 409
1998	Leptauchenia Lander

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