Where: Fremont County, Wyoming (42.4° N, 108.9° W: paleocoordinates 46.2° N, 94.9° W)
• coordinate based on nearby landmark
• local area-level geographic resolution
When: Blacksforkian zone, Bridger Formation, Bridgerian (50.3 - 46.2 Ma)
• spans lower chron C23n and upper C23r: Clyde et al. 2001
• member-level stratigraphic resolution
Environment/lithology: terrestrial; mudstone and ferruginous, tuffaceous, red, carbonaceous sandstone
Size classes: macrofossils, mesofossils
Primary reference: G. F. Gunnell and W. S. Bartels. 2001. Basin margins, biodiversity, evolutionary innovation, and the origin of new taxa. Eocene biodiversity: unusual occurrences and rarely sampled habitats (G. F. Gunnell, ed.) 403-432 [J. Alroy/J. Alroy/J. Alroy]more details
Purpose of describing collection: paleoecologic analysis
PaleoDB collection 27269: authorized by John Alroy, entered by John Alroy on 26.11.2002, edited by Philip Mannion
Creative Commons license: CC BY (attribution)
Taxonomic list
Reptilia | |
"Crocodylus" affinis Marsh 1871 crocodile
Crocodylus affinis Marsh 1871 crocodile | |
Alligatoridae indet. crocodilian | |
"Diplocynodon" sp. Pomel 1847 crocodilian | |
Palaeoxantusia sp. Hecht 1956 night lizard | |
Saniwa ensidens Leidy 1870 squamates | |
Xestops vagans Marsh 1872 squamates
Glyptosaurus sp. Marsh 1871 squamates | |
Boavus occidentalis Marsh 1871 snake | |
Baena arenosa Leidy 1870 turtle | |
Emydidae indet. Rafinesque 1815 turtle | |
Trionychidae indet. Gray 1825 softshell turtle | |
Anosteira ornata Leidy 1871 turtle | |
Mammalia | |
Hyopsodus sp. Leidy 1870 condylarth | |
Hyrachyus sp. Leidy 1871 odd-toed ungulate | |
Helaletes sp. Marsh 1872 odd-toed ungulate | |
Palaeosyops fontinalis Cope 1873 brontothere | |
Viverravus minutus Wortman 1901 placental | |
Sciuravidae indet. Miller and Gidley 1918 rodent | |
Notharctus robinsoni Gingerich 1979 primate
Smilodectes mcgrewi Gingerich 1979 primate | |
| |
Baptemys wyomingensis | |
Baptemys wyomingensis Leidy 1870 |