FIGURE 6 in New early Pleistocene Alligator (Eusuchia: Crocodylia) from Florida bridges a gap in Alligator evolution

FIGURE 6. Comparison of anterior portion of splenial in lingual view. (A.) Alligator mississippiensis (ETMNH-Z 265) showing absence of anterior foramen intermandibularis oralis (FIO, splenial outlined in red), (B.) A. sinensis (ETMNH-Z 6953) with anterior FIO present (splenial outlined in red), and (C.) A. hailensis (UF 162533) showing autapomorphic incompletely closed anterior FIO (preserved portion of splenial outlined in white). Scale in each = 2 cm.