A taxonomic group or classification of early reptiles characterized by a skull without temporal fenestrae or openings, including primitive forms like captorhinomorphs.
From Greek 'an-' (without) and 'apsis' (arch), forming the group name in Latin binomial nomenclature. A paleontological classification system.
Anapsida represents an entire branch of early reptile evolution that modern scientists are still arguing about—some don't even think they're 'true' reptiles anymore.
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