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Nelson, J.S., 1994

Myxiniformes hagfishes

Myxini

Petromyzontiformes 600 M years

Forey, P. and P. Janvier, 1993  |  Helfman, G., B. Collette and D. Facey, 1997

early Cambrian

Marine

Fresh

Brackish

One semicrircular canal; single olfactory capsule with few folds in sensory epithelium, and olfactory nerves with separate bundles; no bone; eye musculature absent; 1-16 pairs of external gill openings; adenohypophysis with undifferentiated cellular elements, not divided into distinct regions; body naked and eel-like; no paired fins; no trace of lateral line system in adults, neuromasts absent.

Greek myxinos = a fish of slime, derived from Greek myxo = mucus, slime; Linnaeus, 1846. Ref. 45335.

Greek, myxinos = a fish of slime, derived from Greek myxo = mucus, slime; Linné; 1846 + Latin, forma = shape (Ref. 45335).

( n = 1 ) -
Myxinidae

Ref.
[ e.g. 9948]                       

Glossary
                    [ e.g. cephalopods]