-
extend for a very
short distance into the
upper lobe of the fin (D) -
Diphycercal means the
vertebrae extend to the tip of the tail and the tail is symmetrical...
- fan-shaped. The tail may be heterocercal,
reversed heterocercal, protocercal,
diphycercal, or homocercal. Heterocercal:
vertebrae extend into the
upper lobe of...
- They
possess a three-lobed
caudal fin, also
called a
trilobate fin or a
diphycercal tail. A
secondary tail
extending past the
primary tail
separates the...
-
Endoskeleton Cartilaginous Mostly bony
Caudal fin
Heterocercal Heterocercal or
diphycercal Pelvic fins
Usually posterior.
Mostly anterior,
occasionally posterior...
- and from
their region of
origin toward insertion. They have
powerful diphycercal tails that are long and paddle-shaped. The
pectoral fins are large, fleshy...
-
scales arranged in chevrons, and the tail is
probably pad-shaped and
diphycercal. The
dermal bones of
arandaspids consist of
aspidine (acellular bone)...
-
pelvic fins for navigation, and the tail for propulsion. The fin was of
diphycercal,
foreshadowing the
straightening of the
spine and the
evolution of a...
- large,
lobed pectoral fins
located just
posterior to the operculum, a
diphycercal caudal fin, and small,
pointy pelvic fins. The head is
broad and flat...
-
Donoghue &
Smith 2001;
Sansom et al. 2005), in
which the
caudal fin
looks diphycercal (i.e. symmetrical) and
strengthened by a few
large radials (Janvier 1996)...
-
small scales in
between in some species. The
caudal fin is abbreviate-
diphycercal.
Early Tri****ic
species of
Saurichthys differ from
later species most...