List of holdings from the Carboniferous
| Epoch/Age | Formation | Location | Collection | # of Drawers |
|---|---|---|---|---|
| General Carboniferous/Permian | Bird Spring Formation | California | 1 | |
| General Carboniferous | Miscellaneous | Non-USA | International Collection | 1 |
| General Carboniferous/Permian | Akiyoshi Limestone | Japan | 3 | |
| General Carboniferous | Donets Basin | Ukraine | 1 | |
| General Carboniferous | Moscow Basin | Russia | 1 |