Hoplopteryx is an extinct genus of Trachichthyidae from the Cretaceous.

 Hoplopteryx has a dorsal fin supported by nine unjointed, bony rays, deeply forked, homocercal tail, a moderately developed anal fin, and a pelvic fin located well forward. The snout is quite short, the eyes fairly large, and both jaws of the upturned mouth hold small teeth.

 Hoplopteryx was a marine fish, living in shallow chalk seas.

 Hoplopteryx was at a typical length 27cm.

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