There are 3 matches
| Collection | Authorizer | Collection name | Reference |
|---|---|---|---|
| 9839 | M. Patzkowsky | USNM 16001h, Tinu Formation, Oaxaca, Mexico - Robison and Pantoja-Alor 1968 Tremadoc - Cambrian-Ordovician - Mexico | Robison and Pantoja-Alor (1968) |
| 9841 | M. Patzkowsky | USNM 16001d, Nochixtlán Region Tremadoc - Cambrian-Ordovician - Mexico | Robison and Pantoja-Alor (1968) |
| 9847 | M. Patzkowsky | USNM 16002e, Tinu Formation, Oaxaca, Mexico - Robison and Pantoja-Alor 1968 Tremadoc - Cambrian-Ordovician - Mexico | Robison and Pantoja-Alor (1968) |