Lastres Formation

The Lastres Formation is a geological formation located in Asturias province, northwestern Spain. It is believed to have been deposited in a fluvial-dominated deltaic system.^[1]

Lastres Formation
Stratigraphic range: Kimmeridgian-Tithonian
Type	Geologic group
Overlies	Tereñes Formation
Thickness	400 meters[1]
Lithology
Primary	Sandstone, conglomerate[1]
Other	Mudstone[1]
Location
Coordinates	43.5°N 5.5°W / 43.5; -5.5
Approximate paleocoordinates	35.8°N 6.8°E / 35.8; 6.8
Region	Asturias
Country	Spain
Lastres Formation (Spain) Show map of Spain Lastres Formation (Asturias) Show map of Asturias

Fossil tracks have been reported from the formation, including those of dinosaurs, pterosaurs, crocodiles, turtles, and lizards.^[2]

Fossil content

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.

Pterosaurs

Pterosaurs
Genus	Species	Presence	Notes	Images
Pteraichnus[3]		* Present at the Quintueles, Oles, Tazones, and Luces sites; all in Asturias, Spain.[3]	* Quintueles, Oles, and Tazones specimens housed at the Jurassic Museum of Asturias, Spain. Luces specimens remain in the field.[3]

Plants

Plants
Genus	Species	Presence	Material	Notes	Images
Ricciopsis	R. asturicus	[4]		A liverwort.

Correlation

Early Cretaceous stratigraphy of Iberia

Ma	Age	Paleomap \ Basins	Cantabrian	Olanyà	Cameros	Maestrazgo	Oliete	Galve	Morella	South Iberian	Pre-betic	Lusitanian
100	Cenomanian		La Cabana	Sopeira	Utrillas		Mosquerela					Caranguejeira
			Altamira		Utrillas
			Eguino
125	Albian		Ullaga - Balmaseda	Lluçà						Traiguera
			Monte Grande		Escucha		Escucha			Jijona
			Itxina - Miono
	Aptian		Valmaseda - Tellamendi		Ol Gp. - Castrillo	Benassal		Benassal				Olhos
				Font	En Gp. - Leza	Morella/Oliete	Oliete	Villaroya	Morella	Capas Rojas		Almargem
			Patrocinio - Ernaga	Senyús	En Gp. - Jubela	Forcall				Villaroya	Upper Bedoulian	Figueira
	Barremian		Vega de Pas	Cabó	Abejar	Xert	Alacón	Xert		Huérguina		Assises
				Prada		Artoles				Collado	Moutonianum	Papo Seco
				Rúbies	Tera Gp. - Golmayo	Alacón/Blesa	Blesa	Camarillas	Mirambel
150	Hauterivian				Ur Gp. - Pinilla	Llacova		Castellar	Tera Gp. - Pinilla	Villares		Porto da Calada
							hiatus
						Huerva			Gaita
	Valanginian		Villaro		Ur Gp. - Larriba				Ped Gp. - Hortigüela
					Ped Gp. - Hortigüela				Ped Gp. - Piedrahita
					Peñacoba			Galve		Miravetes
	Berriasian		Cab Gp. - Arcera		Valdeprado	hiatus		Alfambra
					TdL Gp. - Rupelo			Arzobispo	hiatus	Tollo
					On Gp. - Huérteles Sierra Matute
	Tithonian		Lastres		Tera Gp. - Magaña		Higuereles			Tera Gp. - Magaña		Lourinhã
									Arzobispo
					Ágreda
Legend		Major fossiliferous, oofossiliferous, ichnofossiliferous, coproliferous, minor formation
Sources

See also

• List of fossil sites