Features of the new fossil help place hagfish and their relatives on the vertebrate family tree. In the past, scientists have disagreed about where they belonged, depending on how they tackled the ...

Features of the new fossil help place hagfish and their relatives on the vertebrate family tree. In the past, scientists have disagreed about where they belonged, depending on how they tackled the ...

This innovation gave rise to the vertebrate family tree, setting the stage for the explosive diversity that would follow. Picture these ancient fish-like beings swimming through murky seas ...

The Tethymyxine tapirostrum hagfish fossil suggests a new hypothesis for the structure of the vertebrate family tree, with hagfish and other eel-like creatures branching off early from the lineage ...

In the days since Murchison, fossil finds from the Silurian and older layers of rock have been unevenly spread across the vertebrate family tree. Armoured jawless fishes known as ostracoderms now ...

Either way, the enduring mystery of how closely humans and sea lamprey fit on the vertebrate family tree will continue. More deals, reviews, and buying guides The PopSci team has tested hundreds ...

implying blastula and neural crest stem cells evolved at the beginning of the vertebrate family tree. The researchers hypothesized that pou5, which was in both lamprey and Xenopus blastula cells ...