Distribution of Myxinoids
Until fairly recently, myxinoids and lampreys were regarded as being sepa-rately derived from fossil agnathan groups, but some workers provided […]
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Fisheries
Internal Features of Fish
In all fish, the body is built around an axial notochord, still present in adult agnathans, sturgeons, and Latimeria, but
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Structure of Fish: Body Shape, Scale and Fins
The ancient fish ancestors were presumably small and fusiform, looking somewhat like amphioxus (Branchiostoma), and many modern fish have retained
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