Rupelo Formation

Rupelo Formation Stratigraphic range: Berriasian ~145–140 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
La Pedraja tracksite in Mambrillas de Lara
Type	Geological formation
Unit of
Underlies
Overlies	Oncala Group
Area	~1 km2 (0.39 sq mi)
Thickness	~2 m (6.6 ft)
Lithology
Primary	Mudstone
Other	Marl
Location
Coordinates	42°06′N 3°30′W / 42.1°N 3.5°W / 42.1; -3.5Coordinates: 42°06′N 3°30′W / 42.1°N 3.5°W / 42.1; -3.5
Approximate paleocoordinates	33°42′N 5°54′E / 33.7°N 5.9°E / 33.7; 5.9
Region	Mambrillas de Lara, Burgos, Castile and León
Country	Spain
Extent	Restricted to northwesternmost ; Sierra de la Demanda
Type section
Named for	Rupelo
Rupelo Formation (Spain) Rupelo Formation (Castile and León) Show map of SpainShow map of Castile and LeónShow all

The Rupelo Formation is an Early Cretaceous (Berriasian) geologic formation in the Burgos Province of Castile and León in northern Spain. The formation crops out near the municipality Mambrillas de Lara in the northwesternmost part of the in the Sierra de la Demanda.^[1]

Fossil sauropod tracks have been reported from the formation.^[2] The formation was deposited under lacustrine conditions in a shallow carbonate lake, with some exposure events in the sedimentary sequence. Imprints of dinosaurs were made in carbonate mud, after they were infilled with marl. Dinosaur tracks have been assigned to sauropods, theropods and ornithopods.^[3] An indeterminate titanosauriform sauropod humerus (MDS-VPCR, 214) has been found in the formation.^[4]

The municipality of Mambrillas de Lara has created a dinosaur park.

Correlation[]

Early Cretaceous stratigraphy of Iberia

Ma	Age	Paleomap \ Basins		Olanyà								Lusitanian
100	Cenomanian											Caranguejeira
125	Albian		-
			Monte Grande		Escucha		Escucha
			-
	Aptian		-		- Castrillo
					En Gp. -	Morella/			Morella
			-		En Gp. -	Forcall					Upper Bedoulian
	Barremian					Xert	Alacón	Xert		Huérguina
						Artoles				Collado		Papo Seco
				Rúbies	Tera Gp. -	Alacón/Blesa	Blesa	Camarillas
150	Hauterivian				Ur Gp. -			Castellar	Tera Gp. -
							hiatus
	Valanginian				Ur Gp. -				-
					-				- Piedrahita
	Berriasian		-			hiatus
					- Rupelo			Arzobispo	hiatus
					On Gp. -
	Tithonian		Lastres		Tera Gp. -		Higuereles			Tera Gp. -		Lourinhã
									Arzobispo
Legend		Major fossiliferous, oofossiliferous, ichnofossiliferous, coproliferous, minor formation
Sources

See also[]

• List of dinosaur-bearing rock formations
  • List of stratigraphic units with sauropodomorph tracks
    • Sauropod tracks

References[]

Bibliography[]

• González Acebrón, L.; J. Arribas, and R. Mas. 2010. Sand provenance and implications for paleodrainage in a rifted basin: the Tera Group (N. Spain). Journal of Iberian Geology 36. 87–106. Accessed 2019-10-10.
• Weishampel, David B.; Peter Dodson, and Halszka Osmólska (eds.). 2004. The Dinosauria, 2nd edition, 1–880. Berkeley: University of California Press. Accessed 2019-02-21.ISBN 0-520-24209-2

Further reading[]

• Platt, N.H., and C.A. Meyer. 1991. Dinosaur footprints from the Lower Cretaceous of northern Spain: their sedimentological and palaeoecological context. Palaeogeography, Palaeoclimatology, Palaeoecology 86. 321-333.