- that characterize
the cl**** Sarcopterygii
(lobe-finned fish). These actinopterygian
fin rays attach directly
to the proximal
or basal skeletal
- Cranial kinesis
is the term for significant movement
of skull bones relative
to each other
at the joint between
- ray-fins, which would indicate
that the diet of Birgeria included small actinopterygians
not viviparous. This view...
- crossopterygian, placing
the palaeoniscids, the most primitive actinopterygians
. Much later, in 1946, Romer, confirmed
this view, but he also wrote...
lenses. Taxa recovered
include: freshwater actinopterygian
amphibians, diadectomorphs, seymouriamorphs, and...
has multiple origins
in the tree of life. This diagram displays
the origins within actinopterygians
- June 2014 version. Murray, A. M.; Thewissen, J. G. M. (2008). "Eocene actinopterygian fishes
from ****stan, with the description
of a new genus
- paired pelvic
fins are homologous
to the hindlimbs
of tetrapods. In actinopterygians
, the pelvic
of two endochondrally-derived bony girdles...
- Only a few changes occurred during their evolution
from the earlier actinopterygians
. They appeared sometime
in the Late Permian, before
the time of the...
- 84:263–265 Romano, C. & Brinkmann, W. (2009). "Reappraisal of the lower actinopterygian Birgeria stensioei
ALDINGER, 1931 (Osteichthyes; Birgeriidae) from...