AbstractThe usefulness of ecoregions and catchments (hydrologic units) as bases for classifying aquatic vertebrate assemblages in western Oregon was compared using samples collected by electrofishing ...

The cradle of vertebrate evolution was limited to a zone of shallow coastal waters, no more than 60 meters deep. In those waters, fish — the first vertebrates — appeared roughly 480 million years ago, ...

Those of you who took high school biology may remember the lancelet, also known as the amphioxus. Its simplified body plan is notable for containing a number of features that it shares in common with ...

Researchers have elucidated the evolutionary origins of placodes and neural crests, which are defining features of vertebrates, through lineage tracing and genetic analysis in Ciona intestinalis, a ...

Vertebrates first appeared in shallow marine habitats around 500 million years ago. They then transitioned to land nearly 370 million years ago and took to the skies around 200 million years ago. For ...

A study by a group of researchers at the University of Kentucky in collaboration with scientists in four other countries has been published in Nature. Their study is titled "The hagfish genome and the ...

SUNY College of Environmental Science and Forestry. "On the land, one-quarter of vertebrates die because of humans." ScienceDaily. ScienceDaily, 11 February 2019. <www.sciencedaily.com / releases / ...

Prehensile tails and gliding have arisen only in certain taxonomic groups which could occur only on certain continents as a result of biogeographic history, e.g., no marsupials in Africa or flying ...