Synapsids are a clade of amniotes, that had one opening on the sides of the skull. The synapsids' sister clade are the sauropsids. They appeared in the Late Carboniferous, the same time as the first sauropsids.
Subtaxon Therapsids include mammals.
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Subcategories
This category has the following 7 subcategories, out of 7 total.
Pages in category "Synapsids"
The following 4 pages are in this category, out of 4 total. This list may not reflect recent changes.