- back of
their skull,
while in
others it was
located more posteriorly.
Xenacanthids were
ferocious freshwater predators.
Acanthodes Acanthodes is an extinct...
-
freshwater ecosystems,
preying on
small amphibians. Like most
other xenacanthids, this
genus possessed an
array of
spines arising from the
dorsal fins...
-
Diplodoselachidae is a
family of
extinct xenacanthid sharks that
ranged from the
Carboniferous to mid Tri****ic. ****, John R. F. (January 1981). "Diplodoselache...
- (December 2014). "Morphology and
Histology of
Dorsal Spines of the
Xenacanthid Shark Orthacanthus platypternus from the
Lower Permian of Texas, USA:...
-
genus Xenacanthus in 1970
based on the
belief that all
Upper Paleozoic xenacanthids belonged to said genus. In 2003, X.
luedersensis would be re****igned...
- (December 2014). "Morphology and
Histology of
Dorsal Spines of the
Xenacanthid Shark Orthacanthus platypternus from the
Lower Permian of Texas, USA:...
- had a diet that
consisted of actinopterygians, acanthodians, dipnoans,
xenacanthids and tetrapods,
based on
analysis of
coprolites and gut contents. There...
- Tristychius, and Sphenacanthus. They also
suggested that
ctenacanthiforms and
xenacanthids are
closer to the
crown group euselachians than
other chondricthyes like...
- the chondrocranium. A
similar two-point
articulation is also
found in
xenacanthid sharks. The rear edge of the
palatoquadrate would have been
braced by...
-
modern cave
system in Israel.
Other than
exceedingly rare
fragments of
xenacanthids and eryopoids,
aquatic animals are
practically absent from
Richards Spur...
