Sentence examples for most primitive vertebrates from inspiring English sources

This and a number of other traits we share with Myllokunmingia reveal it to be one of the oldest, most primitive vertebrates yet found.

Conodonts, some of the most primitive vertebrates in the fossil record, are often known only from the tapering, toothlike structures that lend the group its name.

They compared 146 genes in many chordates, including hagfish and lamprey (considered the most primitive vertebrates) and larvaceans, which are sea-faring relatives of sea squirts.

The eel-like animals that lived from 530 million to 200 million years ago in the world's seas are some of the most primitive vertebrates in the fossil record.

Paleontologists report in tomorrow's issue of Nature that they have found 530-million-year-old fossils that have backbones and other vertebrate features and appear more advanced than the most primitive vertebrates alive today.

Soft tissues are even more important in the most primitive vertebrates because they show the subtle and complex changes that occurred as this group emerged, says lead author Robert Sansom, who collected lamprey specimens for the study from streams in the United Kingdom and hagfish from fjords in Sweden.

The other fossil--tortuously named Myllokunmingia--is more primitive (its gills are simpler), but Conway Morris says it is still a closer relative to us than to the hagfish, the most primitive vertebrate.

Chemokine genes have been found only in vertebrates including jawless fish lamprey, the most primitive vertebrate [ 5].

As sea lamprey is regarded as the most primitive vertebrate, it would be interesting to determine whether any ortholog of Cide proteins exists in this organism.

The recent research represented that lamprey, generally considered as the most primitive vertebrate, had the uncoupling protein (UCP) transporting H+ [ 35], at least indicating the enhancement of selectivity of the H+ substrate.

Completion of the whole genome sequencing of sea lamprey, regarded as the most primitive vertebrate thus far, will help ultimately resolve the formation of CIDE-N and CIDE-C domain.