- cranium),
craniates possess many
derived characteristics,
which have
allowed for more
complexity to follow. Molecular-genetic
analysis of
craniates reveals...
-
chordates Craniates all have
distinct skulls. They
include the hagfish,
which have no vertebrae.
Michael J.
Benton commented that "
craniates are characterized...
- "Acrania" (cephalochordates) "Vertebrata". In 1877, Ray
Lankester grouped the
Craniates, cephalochordates, and "Urochordates (tunicates) as "Vertebrata". In 1880–1881...
-
Cambrian period. The
Myllokunmingiids are the
earliest known group of
craniates. The
group contains only
three known genera, Haikouichthys, Myllokunmingia...
-
systems have used the term Amphirhina. It is a
sister group of the
jawless craniates Agnatha.
Vertebrate classes The
appearance of the
early vertebrate jaw...
- environments.
There are a
couple of
examples of
osmoconformers that are
craniates such as hagfish,
skates and sharks.
Their body
fluid is
isosmotic with...
-
close relative of
Craniates at all, nor of cephalochordates, but
something even more primitive, and the
defining feature of the
craniate-cephalochordate...
-
Haikouichthys /ˌhaɪkuˈɪkθɪs/ is an
extinct genus of
craniate (animals with
notochords and
distinct heads) that
lived 518
million years ago,
during the...
- endoskeleton,
namely the
cranium (hence a
synonym word for vertebrates, the
craniates) and the
spinal canal. The
hollow cavity inside the
neural tube is filled...
-
chordates developed the
skull and the
vertebral column,
leading to the
first craniates and vertebrates. The
first fish
lineages belong to the Agnatha, or jawless...
