anapsid

 
Pronunciation: /əˈnapsɪd/

noun

Zoology
  • a reptile of a group characterized by a lack of temporal openings in the skull, including the turtles and their relatives and many early fossil forms.
    • Sometimes placed in a subclass Anapsida, though this taxon is now often not recognized

Origin:

1930s: from modern Latin Anapsida, from Greek an- 'without' + apsis, apsid- 'arch'