Temporal range: Late Cretaceous–Recent 
|Snubnosed Spiny Eel, Notacanthus chemnitzii.
From plate 50 of Oceanic Ichthyology by George Brown Goode and Tarleton Hoffman Bean, published 1896.
L. S. Berg, 1947
The order is of relatively recent vintage; Fishes of the World lists it as the suborder Notacanthoidei of Albuliformes. The notacanthiforms are much more eel-like than the albuliforms; for instance, the caudal fin has disappeared.
Fish of the order are found in oceans worldwide, at depths from 120 to 4,900 metres (390 to 16,080 ft). They are elongated fish, although not as much so as the true eels. They typically feed on slow-moving or sessile animals, such as molluscs, echinoderms, and sea anemones. Like the true eels, they have a leptocephalus larva that floats in the surface waters before transforming into an adult. Unusually, the larva can often be larger than the adult.
- Froese, Rainer, and Daniel Pauly, eds. (2006). "Notacanthiformes" in FishBase. January 2006 version.
- Joseph S. Nelson. Fishes of the World. John Wiley & Sons. ISBN 0-471-54713-1.
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