Extant Valanginian first appearances

family of orthopterans

thumb|Lobsters awaiting purchase in Trenton, Maine

family of fishes

Echinorhinus is the only extant genus in the family Echinorhinidae, either a family within the large order Squaliformes or their own monotypic order Echinorhiniformes. The two extant species possess enlarged denticles forming prominent spines or thorns on their skin.

genus of molluscs