Synonyms
Antonyms

1. synapsid

noun. extinct reptile having a single pair of lateral temporal openings in the skull.

Synonyms

  • synapsid reptile
  • pelycosaur
  • edaphosaurus
  • therapsid
  • protomammal
  • reptile
  • ictodosaur
  • reptilian

Antonyms

  • anapsid

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