|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Mammalia - Perissodactyla - Equidae
It was recombined as Calippus ansae by Stirton (1935), Hesse (1936) and Savage (1941); it was recombined as Pliohippus ansae by Johnston (1937); it was recombined as Pliohippus (Astrohippus) ansae by Stirton (1940); it was recombined as Astrohippus ansae by Quinn (1955), Webb (1969), Bennett (1979), Dalquest (1983), MacFadden (1984) and MacFadden (1998).
|Year||Name and author|
|1930||Protohippus ansae Matthew and Stirton p. 361 figs. Plates, 53, 54, 55|
|1935||Calippus ansae Stirton|
|1936||Calippus ansae Hesse|
|1937||Pliohippus ansae Johnston|
|1940||Pliohippus (Astrohippus) ansae Stirton p. 190|
|1941||Calippus ansae Savage|
|1955||Astrohippus ansae Quinn p. 40|
|1969||Astrohippus ansae Webb|
|1979||Astrohippus ansae Bennett|
|1983||Astrohippus ansae Dalquest|
|1984||Astrohippus ansae MacFadden|
|1998||Astrohippus ansae MacFadden p. 550|
Is something missing? Join the Paleobiology Database and enter the data
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.
|W. D. Matthew and R. A. Stirton 1930||Size of P. pertUtu.s, teeth higher crowned and less
curved, transverse width relatively less, especially in premolars (in contrast to P. secu.ndu.s); mesostyle much heavier; cement lakes simple without enamel inflec- tions. In the lower teeth the metaconid and metastylid are oval to rounded in outline, the intervening valley narrowed or fading out toward base of tooth, the outer crescents rounded to flattened.