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Synapsids are one of the two
major clades of
vertebrate animals in the
group Amniota, the
other being the
sauropsids (which
includes reptiles and birds)...
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These lists of
synapsids collectively include every genus that has ever been
included in the
clade Synapsida- the
mammals and
their evolutionary precursors...
- PEL-ih-kə-sor) is an
older term for
basal or
primitive Late
Paleozoic synapsids,
excluding the
therapsids and
their descendants. Previously, the term...
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Sphenacodontia is a stem-based
clade of
derived synapsids. It was
defined by
Amson and
Laurin (2011) as "the
largest clade that
includes Haptodus baylei...
- representatives.
Although early synapsids have
historically been
referred to as "mammal-like reptiles", all
synapsids are more
closely related to mammals...
- /daɪˈmɛtrəˌdɒn/; lit. 'two
measures of teeth') is an
extinct genus of non-mammalian
synapsid belonging to the
family Sphenacodontidae that
lived during the Cisuralian...
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These extended margins of
thinned bone are
called supratemporal fossae.
Synapsids,
including mammals, have one
temporal fenestra,
which is
ventrally bordered...
- aphanosaur), and
Nyasasaurus (a
possible early dinosaur).[citation needed]
Synapsids are a
clade that
includes mammals and
their extinct ancestors. The latter...
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fossil "antediluvian monsters",
including dinosaurs and the mammal-like (
synapsid)
Dicynodon he
helped describe. This was not the only
possible classification...
- of
their synapsid ancestors in the
Pennsylvanian sub-period of the late
Carboniferous period. By the mid-Tri****ic,
there were many
synapsid species that...