Wikipedia
Duffinselache
Duffinselache (Duffin's shark) is an extinct genus of basal selachimorph elasmobranchii cartilaginous fish known from the Late Triassic ( Rhaetian stage) of England. It was first named by Duffin in 1998 as a species of Polyacrodus. Plamen S. Andreev and Gilles Cuny in 2012 reassigned to its own genus, and its type species is Duffinselache holwellensis.