[5] This species was first described by George Brown Goode and Tarleton Hoffman Bean in 1895.

[3][2] Narrownose chimaeras have elongate rostra, slender tails, large pectoral and pelvic fins, large eyes, and two dorsal fins, the first being preceded by a mildly toxic spine.

[6] Longnose chimaeras are members of the class Chondrichthyes, diverging from their closest relatives (sharks, rays, and skates) approximately 400 million years ago.

[7] Egg cases consist of a central chamber surrounded by a web-like structure.

[6] Female longnose chimaeras lay a pair of eggs several times per season.