Fishes of the WorldJohn Wiley & Sons, 25. 4. 2016 - 752 strán (strany) Take your knowledge of fishes to the next level Fishes of the World, Fifth Edition is the only modern, phylogenetically based classification of the world’s fishes. The updated text offers new phylogenetic diagrams that clarify the relationships among fish groups, as well as cutting-edge global knowledge that brings this classic reference up to date. With this resource, you can classify orders, families, and genera of fishes, understand the connections among fish groups, organize fishes in their evolutionary context, and imagine new areas of research. To further assist your work, this text provides representative drawings, many of them new, for most families of fishes, allowing you to make visual connections to the information as you read. It also contains many references to the classical as well as the most up-to-date literature on fish relationships, based on both morphology and molecular biology. The study of fishes is one that certainly requires dedication—and access to reliable, accurate information. With more than 30,000 known species of sharks, rays, and bony fishes, both lobe-finned and ray-finned, you will need to master your area of study with the assistance of the best reference materials available. This text will help you bring your knowledge of fishes to the next level.
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Dorsal fin absent (caudal fin extends onto part of dorsal surface); eyes degenerate; barbels present around biting mouth; teeth only on tongue, plus one on “palate”; dorsal and ventral nerve roots united; nasohypophyseal sac not blind, ...
†Subclass ASTRASPIDA Thick, glassy enameloid caps on the tubercles of the ornamentation; eyes small and laterally placed; gill openings at least eight, relatively large and with no cover; paired fins absent (Janvier, 1996).
... epichordal lobe (perhaps in part or entirely corresponding to the posterior dorsal fin); anterior dorsal fin absent, but a series of dorsomedian scutes present; unique pectoral spines or rods present; anal fin reduced or absent; ...
... scales of body ornamented and dorsoventrally elongated; anal fin absent; pectoral fins, probably homologous to gnathostome pectoral fins, known in most (e.g., the basal †Ateleaspis, †Superciliaspis, †Waengsjoeaspis) but absent in ...
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