Crassicorophium crassicorne
Crassicorophium crassicorne is a species of amphipod crustacean. It lives in shallow subtidal muddy sand and may grow up to  long. C. crassicorne occurs on American and European coasts from Norway to the Black Sea. References

Corophiida
Crustaceans of the Atlantic Ocean
Crustaceans described in 1859