Acanthodus

Acanthodus is an extinct genus of conodonts.

Acanthodus Temporal range: Late Cambrian–Early Ordovician PreꞒ Ꞓ O S D C P T J K Pg N
W: Acanthodus uncinatus Furnish; lateral view of non-serrate suberectiform element, from upper part of middle Gasconade Dolomites at Phillips Quarry, X 50, USNM 498518.
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	†Conodonta
Order:	†Protopanderodontida
Family:	†Acanthodontidae
Genus:	†Acanthodus Furnish, 1938[1]
Species
†Acanthodus costatus †Acanthodus humachensis †Acanthodus raqueli †Acanthodus uncinatus

Acanthodus humachensis and A. raqueli are from then Late Cambrian (late Furongian) or early Ordovician (Tremadocian) of the Santa Rosita Formation in Argentina.^[2]