Welcommia
Welcommia is an extinct genus of shark. It contains only three species :-
Welcommia bodeuri  H. Cappetta, 1990 (Late Jurassic of France)
Welcommia cappettai Stefanie Klug and Jürgen Kriwet, 2010 (middle Oxfordian of Germany)
Welcommia terencei  D. Delsate and P. Godefroit, 1995 (Jurassic of Belgium)

References

Prehistoric cartilaginous fish genera
Jurassic cartilaginous fish
Hexanchiformes
Fossils of Belgium
Fossils of France
Fossils of Germany
Jurassic fish of Europe
Shark genera