Raninoides gottschei was another frog crab adapted to soft-bottom life. Its streamlined body would have helped it move through loose sediment, and by comparison with living raninids it probably spent substantial periods partly or completely buried.

Burrowing offered both concealment from predators and access to prey living in or close to the seabed. The presence of more than one frog crab in the London Clay shows that this specialised sediment-dwelling lifestyle was already successful in early Eocene seas.