Figure 6. Horizontal virtual sections of the skull of various gorgonopsian basicrania at different ontogenetic stages.
Notice, for example, the wide separation between the basipostsphenoid and the parasphenoid-basipresphenoid complex in GPIT/RE/7124 (A) versus the condition in GPIT/RE/7119 (B). Abbreviations: bocc, basioccipital; bspost, basipostsphenoid; ic, internal carotids; op, opisthotic; ps+bspre, parasphenoid-basipresphenoid; pro, prootic; pt, pterygoid.