Extant Hauterivian first appearances

Amphipoda () is an order of malacostracan crustaceans with no carapace and generally with laterally compressed bodies. Amphipods () range in size from 1 to 340 millimetres (0.039 to 13 in) and are mostly detritivores or scavengers. More than 10,700 amphipod species are currently recognized. They are mostly marine animals but are found in almost all aquatic environments. Some 2,250 species live in fresh water, and the order also includes the terrestrial sandhoppers, such as Talitrus saltator and Arcitalitrus sylvaticus.

family of fishes

Mastotermitidae is a family of termites with one sole living species, Mastotermes darwiniensis which is found only in northern Australia. The remaining genera of this family are only known from the fossil record.