| Scientific Name | Order | Family | Photo Description | |
|---|---|---|---|---|
| Erethizon dorsatum | Rodentia | Erethizontidae | lateral lower jaw comparison | |
| Erethizon dorsatum | Rodentia | Erethizontidae | dorsal lower jaw comparison | |
| Erethizon dorsatum | Rodentia | Erethizontidae | skull: lateral specialization comparison | |
| Erethizon dorsatum | Rodentia | Erethizontidae | skull: anterior specialization comparison | |
| Erethizon dorsatum | Rodentia | Erethizontidae | study skin | |
| Erethizon dorsatum | Rodentia | Erethizontidae | skull: dorsal | |
| Erethizon dorsatum | Rodentia | Erethizontidae | skull: dorsal mandible, ventral cranium | |
| Erethizon dorsatum | Rodentia | Erethizontidae | skull: lateral |
