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The top documents tagged [branchiostegal rays]
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branchiostegal rays
Respiration. Jawless Fishes Gills - pore-like openings 7 pairs of gill pouches in lamprey 5-15 pairs of gill pouches in hagfish, but varying numbers.
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Skelton & Muscles. Hagfish No true vertebrae - sheath of cartilage surrounding notochord Few skull bones No true vertebrae - sheath of cartilage.
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Stolephorus pacificus new species of tropical anchovy (Engraulidae)
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