Fig. 4. A in The brachyopoid Hadrokkosaurus bradyi from the early Middle Triassic of Arizona, and a phylogenetic analysis of lower jaw characters in temnospondyl amphibians

Fig. 4. A. Stereopair of UCMP 36205, early Anisian, northeastern Arizona; incomplete prearticular in dorsal view attributed to Hadrokkosaurus bradyi; arrows mark position and extent of lateral edge of contact area for articular. B. Stereopair of UCMP 36210, early Anisian, northeastern Arizona; broken angular in dorsal view presumably incorrectly attributed to Hadrokkosaurus bradyi; note pronounced boss−like adductor process.