Mammal
Castoroides
Giant beaver
Castoroides ohioensis is the bear-sized Pleistocene giant beaver of North America, whose incisors up to 15 cm long with ridged enamel are prized finds in Florida rivers, Ohio bogs and Midwestern gravels. Incisor fragments are the common item; skulls are rare. It is a favourite among Florida river collectors.
| Phylum | Chordata |
|---|---|
| Class | Mammalia |
| Order | Rodentia |
| Family | Castoridae |
| Group | Mammal |
| Rank (PBDB) | genus· Paleobiology Database |
| Author | Foster 1838· Paleobiology Database |
| Common name (PBDB) | giant beaver· Paleobiology Database |
| Classification (PBDB) | Chordata › Mammalia › Rodentia › Castoridae· Paleobiology Database |
| Range (PBDB) | 9.4–0.01 Ma· Paleobiology Database |
| PBDB occurrences | 160· Paleobiology Database |
Elsewhere
- GBIF: 4574461
- PBDB: 41540
- Wikidata: Q1866419
- PBDB taxon page
- Wikipedia: Castoroides
- PBDB search: Castoroides
Cite this article
Stratum Study. "Castoroides" (Taxon). Stratum Study pack 2026.09, as of 2026-09-19. https://stratum.black/study/taxa/castoroides. Accessed 2026-09-20.
@misc{stratum-castoroides,
title = {Castoroides},
author = {{Stratum Study}},
howpublished = {\url{https://stratum.black/study/taxa/castoroides}},
year = {2026},
note = {Taxon article, Stratum Study pack 2026.09, as of 2026-09-19; sources: stratum, pbdb, wikidata, commons. Accessed 2026-09-20.}
} Citations carry the pack version and the article's as-of date so they resolve to the same text later. The facts themselves belong to the sources listed below; cite those for the science.