- have a
structure and
growth form that is
chondrichthyan-like. They may be the
remains of stem-
chondrichthyans, but
their classification remains uncertain...
-
fossil chondrichthyans within the group. The
definition of
Elasmobranchii has
since been
subject to much
confusion with
regard to
fossil chondrichthyans. Maisey...
-
estimated the
Holocephali split from the
Elasmobranchii (the
branch of
chondrichthyans containing true
sharks and rays)
about 421
million years ago. Analysis...
- mermaid's purse, is the
casing that
surrounds the eggs of
oviparous chondrichthyans.
Living chondricthyans that
produce egg
cases include some sharks,...
-
support a
close relationship to symmoriiforms, a
small group of
bizarre chondrichthyans such as the bristle-spined Stethacanthus.
Cladoselache and symmoriiforms...
- fish) with a shark-like morphology, such as hybodonts. Shark-like
chondrichthyans such as
Cladoselache and
Doliodus first appeared in the
Devonian Period...
- 439
million years ago,
which are
placed as acanthodian-grade stem-
chondrichthyans. Brazeau, M. D.; Friedman, M. (2015). "The
origin and
early phylogenetic...
-
bronchial tubes, and the
intervertebral discs. In
other taxa, such as
chondrichthyans, but also in cyclostomes, it may
constitute a much
greater proportion...
-
mosaic of
features shared with both
osteichthyans (bony fish) and
chondrichthyans (cartilaginous fish). In
general body shape, they were
similar to modern...
- Wenjin; Wang, Jianhua; Wang, Chun-Chieh; et al. (September 2022). "Spiny
chondrichthyan from the
lower Silurian of
South China". Nature. 609 (7929): 969–974...
