synapsida

1. Extinct reptiles of the Permian to Jurassic considered ancestral to mammals (synset 101721816)
   is a type of: class - (biology) a taxonomic group containing one or more orders
   member holonym:

   • order therapsida, therapsida - extinct mammal-like reptiles found inhabiting all continents from the mid Permian to late Triassic
   • ictodosauria, order ictodosauria - extinct reptiles of the later Triassic period
   • order pelycosauria, pelycosauria - edaphosaurus; dimetrodon
   belongs to: class reptilia, reptilia - class of cold-blooded air-breathing vertebrates with completely ossified skeleton and a body usually covered with scales or horny plates; once the dominant land animals
   same as: subclass synapsida

Other Searches

• Rhyme: Dillfrog, RhymeZone
• Definition: Wiktionary, Dictionary.com, Wikipedia, Merriam-Webster, WordNet, Power Thesaurus
• Imagery: Google, Flickr, Bing