Enciso Group

The Enciso Group is a geological formation in La Rioja, Spain whose strata date back to the Early Cretaceous.^[1]

Enciso Group
Stratigraphic range: Hauterivian-early Aptian ~135–118 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Ichnofossils near Enciso
Type	Geologic group
Sub-units	Leza & Jubela Formations
Underlies	Oliván Group
Overlies	Urbión Group
Lithology
Primary	Sandstone, limestone
Other	Marl, mudstone
Location
Coordinates	42.1°N 2.3°W / 42.1; -2.3
Approximate paleocoordinates	31.7°N 9.0°E / 31.7; 9.0
Region	La Rioja
Country	Spain
Extent	Cameros Basin
Type section
Named for	Enciso, La Rioja
Enciso Group (Spain) Show map of Spain Enciso Group (La Rioja, Spain) Show map of La Rioja, Spain

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.

Fossil content

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

Color key Taxon Reclassified taxon Taxon falsely reported as present Dubious taxon or junior synonym Ichnotaxon Ootaxon Morphotaxon		Notes Uncertain or tentative taxa are in small text; crossed out taxa are discredited.

Dinosaurs

Theropods

Theropods of the Enciso Group
Genus	Species	Location	Stratigraphic position	Material	Notes	Images
Riojavenatrix[3]	R. lacustris				A baryonychine spinosaurid

Turtles

Turtles of the Enciso Group
Genus	Species	Location	Stratigraphic position	Material	Notes	Images
Camerochelys[4]	C. vilanovai				A xinjiangchelyid turtle

See also

• List of dinosaur-bearing rock formations