Near Matches
Ignore Exact
Everything
2
Agnatha
(
thing
)
by
ophie
Wed Apr 26 2000 at 22:45:24
SuperClass
Agnatha
is a division the subphylum
vertebrata
which has the following characteristics:
Slender,
eel
-like
body
.
Median
fin
s but no paired appendages.
Fibrous and cartilaginous
skeleton
; notochord throughout life.
Heart
with one
atrium
and one
ventricle
.
Dorsal
nerve
cord with differentiated
brain
.
Digestive systems without
stomach
.
Sense organs of
taste
,
smell
and
hear
ing.
External fertilization.
Agnatha
is considered a superclass made up of the following classes:
Class
Myxini
(the hagfishes)
Class
Cephalaspidomorphi
(the lampreys)
Cephalaspidomorphi
Myxini
Vertebrata
synapomorphy
What Would Jackie Chan Do?
hagfish
Rocksucker
Garbage can taxon
On the Border
Osteichthyes
Tetrapod
Sea lamprey
Rat-tail
Lamprey
Devonian
Log in
or
register
to write something here or to contact authors.