<prompt> Qedela le nkulumo elandelayo: Uhlobo lokuqala oluqanjwe igama lwatholakala eMiocene Mascall Fauna yaseCottonwood Creek, e-Oregon. Lolu hlobo olwaziwa ngokuthi i-Anchitherium ultimus lwachazwa ngo-1886 isazi sezinto zakudala esaziwayo, u-E. D. Cope ngesikhathi sezimpi zeBone. Ngo-1906 ngesikhathi ecwaninga ngama-equid aseMascall, uJ. Gidley wathuthela ohlotsheni olusha aluthi Archaeohippus. Ukufana okuqinile kwezici kwaholela ekutheni uhlobo lubhekwe njengohlobo olungaphansi kwe- Parahippus nguW. D. Matthew ngo-1932. Ngokuphikisana kakhulu nombono Archaeohippus yaqinisekiswa kabusha nguDF Bode ngo-1933, futhi kanye no A. ultimus, wafaka A. mourningi no A. penultimus. I-Archaeohippus yayitholakala kulo lonke elaseNyakatho Melika. Ngaphezu kokutholakala eFlorida nase-Oregon, kuye kwatholakala izinsalela zaseNingizimu Saskatchewan, eCanada. Ngakolunye uhlangothi lwendawo yayo, i-Archaeohippus iye yatholakala ngaseningizimu njenge-Miocene Gaillard Cut yasendaweni  <response>: indawo eyayiyichweba lasePanama. I-Archaeohippus stenolophus, eyaziwa ngama-Oligocene deposits eSaskatchewan, ayiyona i- Archaeohippus, kanti i- A. minimus iyinhlanganisela yama-taxa amabili, njengoba kuphawuliwe ngu-Osborn 1918, ne-P3-M1 engeye- A. ultimus kanye ne-molar ne-premolar engeye-equid enkulu, etholakala kakhulu. I-Archaeohippus mannulus ne-Arachaeohippus blackbergi kuye kwatholakala eFlorida, ikakhulukazi endaweni yaseThomas Farm. 