jawless


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  • adj

Antonyms for jawless

of animals having no jaw

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References in periodicals archive ?
Bringing that environmental context together with what was already known about the family tree relationships of vertebrates from the middle Paleozoic, 480 to 360 million years ago, the researchers created a database that involved 2,728 early records for jawed and jawless fishes.
Material properties of the skins of cartilaginous (e.g., Naresh et al., 1997) and bony fishes (e.g., Hebrank, 1980; Hebrank and Hebrank, 1986; Brainerd, 1994) have been measured; however, data sets from testing on jawless fish skins have yet to be published.
Given the structural similarities, it is believed that all these MHC I or MHC I-like molecules have evolutionary lineage with a common ancestor.[sup][13] The MHC locus has been found in all jawed vertebrates, however, the proto-MHC could trace back to the cephalochordate (amphioxus) and jawless vertebrate lineages.[sup][110],[111],[112] MHC II genes were firstly derived from proto-MHC by exon shuffling, combining an Ig-like C domain with a peptide binding region.[sup][113] Subsequently, another peptide binding region exon was added to MHC II [sz] chain to form the MHC I heavy chain, which happened at approximately 500 million years ago.
The jawless fish (Class Agnatha) are represented with an interesting study with sea lamprey (Petromyzon marinus) describing the relationship between sperm DNA damage and fertilizing ability [110], while cartilaginous fish (Class Chondrichthyes) are completely unexplored.
autoimmune hepatitis) Present in all eukaryotes Present in jawed vertebrates with (including plants, which, emerging evidence of related however, use different mechanisms immune mechanisms in jawless and molecules in innate immunity) vertebrates and some invertebrates
Over 460 million years ago the first jawless fish swam in shallow seas of what was to become the Appalachian basin of North America.
Using micron resolution X-ray imaging, they showed how a series of fossils, with a 410 million year old armoured fish called Romundina at its centre, documents the step-by-step assembly of the face during the evolutionary transition from jawless to jawed vertebrates.
canicula characterised here shares a number of key features with its counterpart in jawless (lamprey) and jawed vertebrates.
ROSEBURG - A dam on the North Umpqua River has been modified to make the spawning migration easier for lamprey - a jawless fish that is often mistaken for an eel.
The convention center was packed with sci-fi fans, many in costumes (my favorite being a pretty girl made up to look like samurai-welding heroine Michonne from "The Walking Dead," complete with a pair of jawless, armless zombies made out of Styrofoam.)
These fossils were heterostracans, small, primitive, jawless, armoured fish that occupy a place in the lineage of Man's earliest ancestors.
for now, jawless, milk oozing from his putrid neck--
As previously pointed out, (21),(22) though not by Guo and Cooper et al., (20) the Bcl11 protein in sea lamprey, a jawless vertebrate, can be categorized into the Bcl11a cluster.
You are jawless Yet your jabs keep raining on me Mr.