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 interrelationships between major living vertebrate, and even chordate, groups are now reasonably well resolved thanks to a large amount of generally congruent data derived from molecular sequences ...

Western North American Naturalist, Vol. 74, No. 1 (June 2014), pp. 1-17 (17 pages) Prior to this study, there was no information on arthropods, bats, and other vertebrates of caves in ...

A stunningly preserved, soft-bodied fish that is more than 500 million years old could be the ancestor of almost all living vertebrates. The fossilized fish, called Metaspriggina, sports ...

Bird squawk or frog croak? When forest officer C.R. Naik played a call on his phone to ecologists K.S. Seshadri and K.V. Gururaja, they were convinced it was a white-breasted kingfisher. “We even ...

If you were to encounter a sea lamprey while swimming, you might think that you had stumbled upon an eel. That is, until you spot its suction cup mouth, ringed with razor-sharp teeth. Admittedly, this ...