-
Paleontologists and
placoderm specialists suspect that the
scarcity of
placoderms in the
Silurian fossil record is due to
placoderms'
living in environments...
-
hinged to the
thoracic armour. This
allowed placoderms to lift
their heads,
unlike ostracoderms.
Placoderms were the
first jawed fish;
their jaws likely...
-
including all
living cartilaginous and bony fish, as well as the
extinct placoderms and acanthodians. Most fish are cold-blooded,
their body
temperature varying...
-
established names, and
genera that are no
longer considered placoderms. The
modern descendants of
placoderms, the bony and
cartilaginous fishes, and
their extinct...
-
other placoderms, may have also been
among the
first vertebrates to
internalize egg fertilization, as seen in some
modern sharks. Some
other placoderms have...
- that a
branch of
placoderms was most
likely the
ancestor of present-day gnathostomes. A 419-million-year-old
fossil of a
placoderm named Entelognathus...
- P. Plax;
Michael J.
Newman (2020). "New
Early Devonian (late Emsian)
placoderms from Belarus".
Journal of Paleontology. 94 (4): 773–787. doi:10.1017/jpa...
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leading the
Devonian to
often be
dubbed the Age of Fishes. The
armored placoderms began dominating almost every known aquatic environment. In the oceans...
-
class Placodermi.
Recent studies indicate that
Osteichthyes evolved from
placoderms like Entelognathus,
while acanthodians are more
closely related to modern...
- once
thought to be the most
primitive of the
placoderms. Indeed,
there has been the idea that the
placoderms had a gradient, of sorts, from the
least armored...
