. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Figure 11. Outlines of right P4 of Carpodaptes (lateral aspect), to same scale. A) C. aulacodon, holotype, AMNH 17367 (reversed). B) C. jepseni, holotype, PL) 20716. C) C. hazelae, holotype, AMNH 33854 (Scarritt Quarry). D) C. hazelae, PL) 20084 (Cedar Point Quarry). E) C. hobackensis, UMMP V55124. F) C. cygneus, holotype, ROM 05622. 20886, 20889, 20898, 20900, 21213, 21266, 21279, 21297, 21299, 21316, 21317, 21330, 21341, 21350, 21351, 21357, 21384, 21393, 21399, 21413, 21419, 21437, 21438, from Cedar Point Quarry. H
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Figure 11. Outlines of right P4 of Carpodaptes (lateral aspect), to same scale. A) C. aulacodon, holotype, AMNH 17367 (reversed). B) C. jepseni, holotype, PL) 20716. C) C. hazelae, holotype, AMNH 33854 (Scarritt Quarry). D) C. hazelae, PL) 20084 (Cedar Point Quarry). E) C. hobackensis, UMMP V55124. F) C. cygneus, holotype, ROM 05622. 20886, 20889, 20898, 20900, 21213, 21266, 21279, 21297, 21299, 21316, 21317, 21330, 21341, 21350, 21351, 21357, 21384, 21393, 21399, 21413, 21419, 21437, 21438, from Cedar Point Quarry. Horizon and Locality: Late Paleocene (Tif- fanian) of Montana and Wyoming: Scarritt Quarry, Melville Member, Fort Union Forma- tion, Crazy Mountain Field, Montana; Cedar Point Quarry, Polecat Bench Formation, Big Horn County, Wyoming. Emended Diagnosis: Close to C. aula- codon in size, but mean length of P4 less than in C. aulacodon. P4 with 5 or 6 vari- ably defined apical cusps followed by a low but distinct talonid heel; more rounded in profile and more quadrate in occlusal view (at base) than in C. aulacodon. Molars not significantly different morpho- logically from other species, but larger than in C. hobackensis and C. cygneus, smaller than in C. jepseni. Discussion: Carpodaptes hazelae was originally described and defined from a small sample collected at the Scarritt Quarry in the Crazy Mountain Field. The much larger sample from Cedar Point Quarry is here referred to Carpodaptes hazelae and necessitates the revised diag- nosis presented above. C. hazelae is now represented by more specimens than any other species of the family. There can be little doubt that the carpolestids from Cedar Point Quarry all represent the same species. Although con- siderable variation is observed, graphs of tooth dimensions reveal normal, unimodal distribution; there is no indication of sexual dimorphism and no evidence of the pres- ence of more than one taxon. Since the different variations
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