- and
Clepsydrops were
among the
earliest ophiacodontids,
appearing in the Late Carboniferous.
Ophiacodontids are
among the most
basal synapsids, an offshoot...
-
Archaeothyris is an
extinct genus of
ophiacodontid synapsid that
lived during the Late
Carboniferous and is
known from Nova Scotia.
Dated to 306 million...
-
Varanosaurus ('monitor lizard') is an
extinct genus of
early ophiacodontid synapsid that
lived during the
Artinskian and
Kungurian ages of the Permian...
-
Charles Marsh in 1878 and
currently includes five
other species. As an
ophiacodontid,
Ophiacodon is one of the most
basal synapsids and is
close to the evolutionary...
- same
simple L-shape as
those of
ophiacodontids.
Reisz (1972)
tentatively classified Echinerpeton as an
ophiacodontid in its
initial description, but later...
- The
collection of
basal synapsids includes 29
holotypes of caseid,
ophiacodontid, edaphosaurid, varanopid, and
sphenacodontid species – approximately...
- his
specimen to
belong to
Dimetrodon but
instead classified it as an
ophiacodontid.
Romer and
Price ****igned Case and Williston's
specimens to a newly...
- medium-sized
ophiacodontid, also
described under the name Poliosaurus.
Stereophallodon S.
ciscoensis Skull fragments and
vertebrae A
large ophiacodontid...
- from the
latest Carboniferous to the end of the
Early Permian epoch.
Ophiacodontids were
common from
their appearance in the late
Carboniferous (Pennsylvanian)...
-
unnamed genus,
specimen FMNH (WM) 573, that he took for a
member of the
ophiacodontids, noting, however, its "broader, flattened, and
cutting teeth" compared...
