Fig. 4 in Evolution and identity of synapsid carpal bones

Fig. 4. Carpus of basal Therapsida. A. A biarmosuchian PIN 1758/320, Eshovo, Russia, Roadian, Guadalupian, right carpus, slightly disarticulated, dorsal view. B. Dinocephalian Titanophoneus potens Efremov, 1940, PIN 157/1, Isheevo, Russia, Capitanian, left carpus (reversed), dorsal view. C. Basal anomodontian Galechirus scholtzi Broom, 1907, SAM-PK-1068, Victoria West, South Africa, Capitanian, right carpus, dorsal view (impression). Photographs (A1–C1) and interpretative drawings (A2–C2). Abbreviations: di, distal carpal; int, intermedium; l ce, lateral centrale; m ce, medial centrale; pis, pisiform; p/s, prepollex/sesamoid; ra, radius; rl, radiale; ul, ulna; ur, ulnare.