One of the mysteries of the English language finally explained.
A reptile of a large group characterized by the presence of two temporal openings in the skull, including the lizards, snakes, crocodiles, dinosaurs, and pterosaurs.
- ‘The primitive reptiles were represented by lizard-like captorhinids and basal diapsids.’
- ‘As with many in the systematics community, I am skeptical that turtles are derived diapsids.’
- ‘Adding to the controversy, several independent molecular analyses also regard turtles as diapsids.’
- ‘You may also have noticed that the birds do not have their own box in the cladogram; this is because they are one subgroup of the diapsids, a clade which includes dinosaurs, snakes, and most reptiles.’
- ‘It would not be safe to assume that the synapsid temporal fenestra is strictly homologous to the lower temporal fenestra of diapsids.’
Early 20th century: from modern Latin Diapsida, from di- ‘two’ + Greek apsis, apsid- ‘arch’.
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