- (gnáthos) 'jaws') is a
paraphyletic infraphylum of non-gnathostome vertebrates, or
jawless fish, in the
phylum Chordata,
subphylum Vertebrata,
consisting of both...
- amphibians, and
various classes of fish and reptiles. The fish
include the
jawless Agnatha, and the
jawed Gnathostomata. The
jawed fish
include both the cartilaginous...
-
lineages belong to the Agnatha, or
jawless fish.
Early examples include Haikouichthys.
During the late Cambrian, eel-like
jawless fish
called the conodonts, and...
- not seen in any
other vertebrate group. The
Osteostraci (bony
armored jawless fish) are
generally considered the
sister taxon of Gnathostomata. Jaw development...
- but
lacking limbs with digits. Fish can be
grouped into the more
basal jawless fish and the more
common jawed fish, the
latter including all
living cartilaginous...
-
during their larval stage; and
Cephalochordata (lancelets),
which resemble jawless fish but have no
gills or a
distinct head. The
vertebrates and tunicates...
-
Jawless vertebrates,
which today consist entirely of
lampreys and hagfish, have an
adaptive immune system similar to that
found in
jawed vertebrates....
- one species.
class Agnatha (
jawless fish)
Subclass Cyclostomata (hagfish and lampreys)
Subclass Ostracodermi (armoured
jawless fish) †
class Chondrichthyes...
-
fossil fish
research presented in 2024 is a list of new
fossil taxa of
jawless vertebrates, placoderms,
cartilaginous fishes, bony fishes, and
other fishes...
- of
vertebrates that
comprises the
living jawless fishes: the
lampreys and hagfishes. Both
groups have
jawless mouths with
horny epidermal structures that...