Stroinolepis

Stroinolepis is an extinctgenus of thelodontid that lived during the Middle and Late Ordovicianperiod in what is now October Revolution Island, Severnaya Zemlyaarchipelago of Russia. It is known by scales of 0.2 to 1 mm in length.

Generic name refers to the Strojnaya River where the holotype was found, while the specific epithet is given after Dr. P. Männik, who found and gave the specimen for study.

Isolated scales of Stroinolepis are robust and abrasion-resistant, similar to modern sharks which live among rough substrates such as rocky caves or reefs.