The Enciso Group is a geological formation in La Rioja, Spain whose strata date back to the Early Cretaceous.

[1] The turtle Camerochelys was described from the Enciso Group.

Dinosaur remains, including the holotype of the spinosaurid Riojavenatrix, are among the fossils that have been recovered from the formation.

The first spinosaurid fossil remains found at Igea, Enciso Group were a jaw fragment found in 1983 and isolated teeth.

The following fossils have been found in the formation:[2]