A reptile with no post-orbital openings. Example: Turtle.

primitive reptile having no opening in the temporal region of the skull; all extinct except turtles

Anapsids include the turtles and their extinct kin. They are distinguished by having no holes in the sides of their skulls.

n. A vertebrate distinguished by a skull with no openings in the side behind the eyes, e.g. turtles.

For the extinct fish, see Anaspid.