As another diagnostic feature of the group, the holes that allow the passage of the internal carotid artery through the braincase open at the sides of a bony projection called the basipterygoid process.
2.
Also characteristic of " Styloichthys " is the lyre-shaped trajectory of the supraorbital canal, a coronoids in the lower jaw, an eyestalk and a slender postorbital pila which connects the basipterygoid process and the side of the braincase wall.
3.
Although Reisz " et al . " ( 1997 ) considered " Basicranodon " as a subjective junior synonym of " Mycterosaurus ", Benson ( in press ) found some differences in the distribution of teeth and shape of the dentigerous ventral platform medial to the basipterygoid processes that may indicate taxonomic distinction.
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