- (ikhthús) 'fish') is a
class of
jawed fish that
contains the
cartilaginous fish or
chondrichthyans,
which all have
skeletons primarily composed of cartilage. They can...
-
support a
close relationship to symmoriiforms, a
small group of
bizarre chondrichthyans such as the bristle-spined Stethacanthus.
Cladoselache and symmoriiforms...
-
fossil chondrichthyans within the group. The
definition of
Elasmobranchii has
since been
subject to much
confusion with
regard to
fossil chondrichthyans. Maisey...
-
mosaic of
features shared with both
osteichthyans (bony fish) and
chondrichthyans (cartilaginous fish). In
general body shape, they were
similar to modern...
- mermaid's purse, is the
casing that
surrounds the eggs of
oviparous chondrichthyans.
Living chondricthyans that
produce egg
cases include some sharks,...
-
estimated the
Holocephali split from the
Elasmobranchii (the
branch of
chondrichthyans containing true
sharks and rays)
about 421
million years ago. Analysis...
- fish) with a shark-like morphology, such as hybodonts. Shark-like
chondrichthyans such as
Cladoselache and
Doliodus first appeared in the
Devonian Period...
- The
Hesseltal Formation or
Blackcoloured Formation is a Late
Cretaceous (late
Cenomanian to
early Turonian)
geological formation from
northern Germany...
- Sylvain; Cavin, Lionel; Cappetta,
Henri (2013-10-29). "Cretaceous stem
chondrichthyans survived the end-Permian m**** extinction".
Nature Communications. 4...
- 439
million years ago,
which are
placed as acanthodian-grade stem-
chondrichthyans. Brazeau, M. D.; Friedman, M. (2015). "The
origin and
early phylogenetic...
