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)Stefanie Klug and Jürgen Kriwet (2010). "A new Late Jurassic species of the rare synechodontiform shark, Welcommia (Chondrichthyes, Neoselachii)". Paläontologische Zeitschrift 84 (3): 413–419. . Welcommia terencei D. Delsate and P. Godefroit, 1995 (Jurassic of Belgium)
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