A Revision of the Cat¿sh Genus Noturus Rafinesque

Angebote / Angebote:

Excerpt from A Revision of the Cat¿sh Genus Noturus Rafinesque: With an Analysis of Higher Groups in the IctaluridaeThree clusters of species, each with closely related allopatric repre sentatives, are recognized as species groups, other species groups are suggested but the relationship of the species is not as clear. These allopatric populations are recognized as species because they show a relative morphological uniformity, with consistent divergence from related populations, trends or gradation of characters from one popula tion toward the other do not exist and intermediates or intergrades are lacking.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully, any imperfections that remain are intentionally left to preserve the state of such historical works.