Stenochirus is an extinct genus of decapod crustaceans that lived from the Callovian to Tithonian stages of the Jurassic period.
[1] 22 years later in 1861, Albert Oppel points out that the genus name Bolina is preoccupied by a cnidarian, and reassigns the two species into separate genera.
Oppel described a second species in 1862, which he named Stenochirus mayeri after Charles Mayer-Eymar, based on one specimen preserved showing its underside collected from the Solnhofen Limestone.
This site dates back to the Callovian stage of the Middle Jurassic period, making S. vahldieki the oldest known species of the genus.
[8][9] Garassino & Schweigert (2006) would resurrect the taxon Stenochiridae and give the family a formal diagnosis, reassigning Stenochirus as its only genus.
[4] In 2013, analysis by Karasawa et al. found that the supposed family Chilenophoberidae is paraphyletic, as Stenochirus is nested within as a sister taxon to Pseudastacus.