-
other vertebrates have been lost.
While larvae and
early juvenile acipenseriforms have teeth, the
adults are toothless, or
nearly so. The infraorbital...
- date to the Late Cretaceous, and are
descended from other,
earlier acipenseriform fish,
which date back to the
Early Jur****ic period, some 174 to 201...
-
Thacker (2024) also
recovered the
ptycholepiform Boreosomus as a stem-
acipenseriform. The
following taxa are known:
Subclass Chondrostei Genus †Eochondrosteus...
-
Fossil of the
Cretaceous acipenseriform †Yanosteus longidorsalis...
- evolution.
Polypodium spends most of its life
inside the
oocytes of
acipenseriform fishes. In
infected oocytes,
Polypodium develops from a
binucleate cell...
-
osteological evidence and
stable isotope records of well-preserved
bones of
acipenseriform fishes. The
study noted that "the
palaeobotanical identities, taphonomic...
-
interpreted as
Permian in age). It is
suggested to be the most
basal acipenseriform (sturgeon, paddlefish, and
their fossil relatives). It was originally...
- year,
likely every other year or
somewhat less frequently, like
other acipenseriforms. The
ovaries of the
female fish
contained over 100,000 eggs, each approximately...
-
reached length up to 3.5 m (11 ft). Gyrosteus,
which belongs to
extinct acipenseriform family Chondrosteidae, is
estimated to have
standard length about 6–7 m...
- of the
genus Birgeria.
Cooper (2024)
describes fossil material of an
acipenseriform from the
Kimmeridge Clay (United Kingdom),
representing the
first record...
