†Diaphus prokofievi Taverne, 2015
- Holotype: Ap 12a, b, both sides of a specimen of about 10 centimeters, comprising twenty vertebrae of the posterior portion of the body, with the caudal skeleton and parts of the caudal fin.
- Paratypes: Ap 11, reduced cleithrum of a very small specimen, caudal skeleton and caudal fin.
Type locality: Santonian above marina Apricena, province Foggia, Gargano Promontory, Puglia, South Italy. The Santonian is dated 83-86.6 million years.
Etymology: The species name is dedicated to the Russian ichthyologist Artem M. Prokofiev, in tribute to his many papers treating fossil Myctophiformes from Russia and neighboring countries.