There are 12 matches
| Collection | Authorizer | Collection name | Reference |
|---|---|---|---|
| 81989 | M. Clapham | Antelope Buttes, Collinsworth County (Dozier Lens, Newell 5) Capitanian - Permian 4 - Texas | Newell (1940) |
| 108801 | M. Clapham | USGS 2906 green, Butterfield Trail, Guadalupe Mountains Capitanian - Permian 4 - Texas | Girty (1908) |
| 108812 | M. Clapham | USGS 2926 green, Capitan Peak, Guadalupe Mountains Capitanian - Permian 4 - Texas | Girty (1908) |
| 108821 | M. Clapham | USGS 2930 green, Pine Spring, Guadalupe Mountains Wordian - Permian 4 - Texas | Girty (1908) |
| 108831 | M. Clapham | USGS 2966 green, El Capitan, Guadalupe Mountains Capitanian - Permian 4 - Texas | Girty (1908) |
| 108835 | M. Clapham | USGS 2969 green, southern Delaware Mountains Roadian/Capitanian - Permian 3-4 - Texas | Girty (1908) |
| 108861 | M. Clapham | USGS 3762e green, Guadalupe Point, Guadalupe Mountains Capitanian - Permian 4 - Texas | Girty (1908) |
| 108899 | M. Clapham | USGS 3762d green, Guadalupe Point, Guadalupe Mountains Capitanian - Permian 4 - Texas | Girty (1908) |
| 116644 | M. Clapham | Hogback Butte, Hall County (Dozier Lens, Newell 8a) Capitanian - Permian 4 - Texas | Newell (1940) |
| 116645 | M. Clapham | Naco Butte, Hall County (Dozier Lens, Newell 9, Roth 361-C) Capitanian - Permian 4 - Texas | Newell (1940) |
| 116647 | M. Clapham | North Pease River, Motley County (Dozier Lens, Newell 10) Capitanian - Permian 4 - Texas | Newell (1940) |
| 116650 | M. Clapham | SW Collingsworth County (Newell 7) (coll. Robert Roth) Capitanian - Permian 4 - Texas | Newell (1940) |