Unusuropode castroi Duarte (Santos, 1962)
Cretaceous
Gara Sbaa Member, Akrabou Formation
Gara Sbaa, Morocco

9mm negative of marine isopod.Appears to have some legs preserved.

Isopods belong to an order of crustaceans that dates back to the Carboniferous Period – first-known from the Mazon Creek fauna.  They are quite uncommon overall in the fossil record.  Biologists have studied modern ones the size of a lobster from great ocean depths but most are small like the “roly-polies” you can find in your own backyard.