Also known as Grant Quarry; Porter Ranch
Where: Donley County, Texas (35.0° N, 100.8° W: paleocoordinates 35.5° N, 98.3° W)
• coordinate based on political unit
• small collection-level geographic resolution
When: Clarendonian (12.5 - 9.4 Ma)
Environment/lithology: terrestrial; lithology not reported
Primary reference: R. C. Hulbert, Jr. 1989. Phylogenetic Interrelationships and Evolution of North American Late Equidae. In D. R. Prothero and R. M. Schoch (eds.), The Evolution of Perissodactyls [J. Alroy/J. Alroy/M. Uhen]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 18244: authorized by John Alroy, entered by John Alroy on 05.08.1992, edited by Jonathan Marcot
Creative Commons license: CC BY (attribution)
Taxonomic list
Mammalia | |
Protohippus supremus7, Pliohippus fossulatus4, Calippus regulus7, Calippus martini, Calippus placidus, Neohipparion affine8, Hipparion tehonense8, Pseudhipparion hessei n. sp.13, Hippotherium sp.1, Cormohipparion fricki n. sp.14, Hypohippus affinis11
Hipparion tehonense8 Merriam 1916 hipparionine horse probably includes Nannippus "A" of Hulbert 1989 pers. commun.: JA pers. obs. 1/93
| |
| |
| |
Longirostromeryx clarendonensis n. sp.5
| |
"Cranioceras clarendonensis n. sp." = Cranioceras teres5
| |
| |
"Merychyus novomexicanus" = Ustatochoerus medius novomexicanus1
| |
| |
| |
| |
|