Ctenacanthus

noun

Cten·​acan·​thus

ˌtenəˈkan(t)thəs,

ˌtēn-

: a genus of Upper Devonian and Lower Permian sharks related to Cladoselache and known chiefly from its very stout fin spines

Word History

Etymology

New Latin, from cten- + -acanthus

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