- Nautiloidea,
whose members have a
rigid outer s**** for protection, the
coleoids have at most an
internal s****
called cuttlebone or
gladius that is used...
- All
octopuses and most
cephalopods are
considered to be
color blind.
Coleoid cephalopods (octopus, squid, cuttlefish) have a
single photoreceptor type...
-
Cephalopod intelligence is a
measure of the
cognitive ability of the
cephalopod class of molluscs.
Intelligence is
generally defined as the
process of...
-
modified arms. It also
shares the
inclusion of an
internal gladius with
other coleoids,
including squid, and
eight webbed arms with
cirrate octopods. Vampyroteuthis...
- to the
coleoids and
ammonoids – that is, the
latter groups arose from
within the Bactritida.: 393 An
increase in the
diversity of the
coleoids and ammonoids...
-
short arms and two long tentacles. It is
hypothesized that the
ancestral coleoid had five
identical pairs of limbs, and that one
branch of
descendants evolved...
-
extinct ammonoids (ammonites) and
living coleoids (such as squid, octopus, and kin).
While ammonoids and
coleoids are
monophyletic clades with exclusive...
- some fish
moved into
fresh water while the
coleoids remained in
marine environments. The
ancestral coleoid was
probably nautiloid-like with a
strait septate...
-
sirenias and pinnipeds) and
reptiles (specifically sea turtles), penguins,
coleoid cephalopods (squids and cuttlefish) and
several species of
decapod crustaceans...
- the orthoceratids, and a
remarkable example of
convergent evolution with
coleoid cephalopods, or an
oegospid squid and a
transitional form in the development...
