Lepidophanes (Lampanyctus) petrolifer (David, 1943)
Upper Miocene (Tortonian)
Puente Formation
Alhambra
California, USA.

originally described as Lampanyctus petrolifer by David in 1943 — was an extinct species of lanternfish belonging to the family Myctophidae. These small deep-water fishes are closely related to modern lanternfish, one of the most abundant groups of fishes in today’s oceans.
47mm lanternfish on 83mm slab