FIGURE 5. Drawings of maxillary tooth rows of Capatanka sp. (5.1-5.4) and Palaeocastor (5.5-5.9). 5.1) Capatanka sp. SDSM 53421; 5.2) Capatanka sp. SDSM 53512; 5.3) Capatanka sp. SDSM 5440; 5.4) Capatanka sp. SDSM 5672; 5.5) Palaeocastor sp. SDSM 55115; 5.6) Palaeocastor sp. UCMP 114785; 5.7) Palaeocastor sp. SDSM 53378; 5.8) Palaeocastor sp. SDSM 54235; 5.9) Palaeocastor nebrascensis UCMP 114635 right and left dentition. Scale bar = 5 mm.