Definition of Jawless. Meaning of Jawless. Synonyms of Jawless

- (gnáthos) 'jaws') is a paraphyletic infraphylum of non-gnathostome vertebrates, or jawless fish, in the phylum Chordata, subphylum Vertebrata, consisting of both...
- lineages belong to the Agnatha, or jawless fish. Early examples include Haikouichthys. During the late Cambrian, eel-like jawless fish called the conodonts, and...
- currently about 69,963 species described. Vertebrates span the Agnatha or jawless fish, and the jawed Gnathostomata. These include both the Chondrichthyes...
- 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...
- not seen in any other vertebrate group. The Osteostraci (bony armored jawless fish) are generally considered the sister taxon of Gnathostomata. Jaw development...
- 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...