Jamoytius is named for the english paleontologist J.A.Moy Thomas.
The marine Jamoytius had a narrow, tubular shape with a long fin on its back. It also haves a pair of lateral fins running along its flanks and a small anal fin. The strong downturned tail produces the uplift.
Jamoytius had a round, suckerlike mouth and it was probably a parasite like its living descendant, the marine lamprey. This jawless fish attaches itself to other fishes, rasps away their flesh and then sucks their blood.
Source from great site: http://www.rareresource.com
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