Original sentence: Amphechinus is an extinct genus of hedgehog from the Miocene
Edited sentence: A single specimen was examined by J.Amphechinus is an extinct genus of hedgehog of the family Erinaceidae, endemic to North America, Africa, Europe, and Asia during the Pleistocene epoch (23.8—1.8 mya), existing for approximately.Amphechinus was named by Aymard (1850).Bloch, K.Gingerich for body mass and was estimated to have a weight of.It is not extant.It was assigned to Erinaceidae by Aymard (1850), Rich (1981) and Pickford et al.Rose, and P.akespensis, A.arvernensis, A.baudelotae, A.edwardsi, A.ginsburgi, A.golpeae, A.horncloudi, A.intermedius, A.kreuzae, A.major, A.microdus, A.minutissimus, A.robinsoni, A