Camelops, Leidy, 1854

Tomas-Mosso, Azarael, Castañeda-Posadas, Carlos, Cruz, J. Alberto & Alarcón-Durán, Ivan, 2024, Pleistocene record of mammals and pollen from Mexico (Las Tazas, Valsequillo, Puebla) and their paleoenvironmental interpretation, Palaeontologia Electronica (a 15) 27 (1), pp. 1-18 : 10

Camelops cf. C. hesternus Leidy, 1873

Referred material. Left calcaneus ( BUAPAL 757), Figure 5 .

Description. The left calcaneus (BUAPAL 757) is robust, with a length = 158 mm, body width = 68 mm, interior curvature = 35 mm, and belongs to an adult individual since the epiphyses are well fused without a trace of the sutures (Reitz and Wing 2008).

Comparison and remarks. Unlike other artiodactyls of similar size, such as the genus Bison , the cuboid articular facet is wider, the distal astragalar surface is divided into a medially oriented distal part and an anteriorly oriented proximal part, the articular surface of the fibula is convex proximally and concave distally, and the proximally positioned groove is shallower than in Bison (Guérin and Faure, 1999; Zazula et al., 2016). The family Camelidae in Valsequillo during the Late Pleistocene is represented by Camelops , Hemiauchenia, and Paleolama. We can exclude an assignment of BUAPAL 757 to Hemiauchenia because this genus is smaller ( Table 6). Camelops and Paleolama are of similar size, but Camelops is more robust which

Figures

FIGURE 5. Fossil material of camel and mammoth from Las Tazas, Valsequillo, Puebla. Camelops cf. C. hesternus: A–B, left calcaneus (BUAPAL 757). Mammuthus columbi: C, left femur (BUAPAL 775). Figure A in medial view; B in lateral view; C in caudal view.