Fig. 7. The beavers. A, B in Cranial morphology, systematics and succession of beavers from the middle Miocene Valentine Formation of Nebraska, USA

Fig. 7. The beavers. A, B. Eucastor tortus (Leidy, 1858) from th latest Barstovian Devil's Gulch Member of the Valentine Formation. C, D. Temperocastor valentinensis (Stout, 1999) from the late Barstovian Crookston Bridge Member equivalent of the Valentine Formation. Cheek teeth: A. FAM 65262, right p4–m2 in occlusal (A1) and medial (A2) views. B. CM 18876, left p4–m2. C. UNSM 46392, right P4–M3. D. UNSM 45385, right p4–m3. A, B, anterior to left; C, D, anterior to right.