Figure 2. Archegosaurus decheni. A in The evolution of the scalation pattern in temnospondyl amphibians

Figure 2. Archegosaurus decheni. A, MB.Am.229. Anteriorly directed chevrons with round-oval scales of the flanks, the cloacal region, and the hindlimb. The angle of the chevrons in the ventral midline was enlarged after the death of the animal by a slight displacement of the rows. B, MB.Am.289. Gastral scales articulating in the ventral midline of the trunk, ventral view. C, MB.Am.289. Nodal point of gastral scales in dorsal view between anteriorly and posteriorly directed chevrons.