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Ask a Biologist Q&A: Synapsid Skin
- Forum thread discussing where the non-mammalian synapsids stand in the transition from reptilian scales to mammalian hair.
- Illustration and information on the characters and anatomy, major subgroups, fossil record and evolution of these herbivores.
- Illustration and information on the characters and anatomy, major subgroups, fossil record and evolution of these carnivorous therapsids.
Fossil Groups: Diapsids
- Provides information on this group of amniotes, their characters and anatomy, major subgroups, fossil record, modern forms, literature and weblinks.
Fossil Groups: Synapsida
- Provides information on the characteristics and anatomy of synapsids with a diagram of a typical early period skull showing the synapsid arch and undifferentiated teeth.
Introduction to the Synapsida
- Information on this great vertebrate group with a 300 million year history, their fossil record, life history, ecology, systematics and morphology.
- Information from Wikipedia on this group of reptiles, their changing classification, characteristics and evolutionary history.
Synapsida: Mammals and Their Extinct Relatives
- Information from the Tree of Life Web Project on the synapsids which include mammals and all extinct amniotes more closely related to mammals than to reptiles.
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