 | two additional subfamilies of basal castorids, Agnotocastorinae and Palaeocastorinae, which is followed here. Within the family, Castorinae and Castoroidinae... 8 KB (729 words) - 04:02, 14 April 2024 |
 | the front), and reduced incisive foramen. Members of the subfamily Palaeocastorinae appeared in late-Oligocene North America. This group consisted primarily... 82 KB (9,393 words) - 21:27, 3 March 2024 |
 | Chordata Class: Mammalia Order: Rodentia Family: Castoridae Subfamily: †Palaeocastorinae Genus: †Palaeocastor Leidy, 1869 Species †Palaeocastor fossor †Palaeocastor... 9 KB (961 words) - 22:56, 3 March 2024 |