The Cambridge natural history, Vol. 07 (of 10)

This volume surveys the anatomy, classification, development, and biology of lower chordates and fishes, combining descriptive morphology, embryology, and systematic accounts. It treats hemichordates (enteropneusts and pterobranchs), tunicates and their life cycles, cephalochordates (amphioxus), cyclostomes, and a broad treatment of fishes including elasmobranchs, teleosts, crossopterygians, dipnoans, and fossil groups. The text covers external and internal anatomy, skeleton, scales, respiration, circulation, muscles, nervous and sensory systems, reproductive biology, and paleontological affinities, and offers a detailed classification of teleosts with species accounts and morphological illustrations to support comparative and phylogenetic discussion.