Lastres Formation

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

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]

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

References

1. Philippe, Marc; Billon-Bruyat, Jean-Paul; Garcia-Ramos, Jose C.; Bocat, Loïc; Gomez, Bernard; Piñuela, Laura (January 2010). "New occurrences of the wood Protocupressinoxylon purbeckensis Francis: implications for terrestrial biomes in southwestern Europe at the Jurassic/Cretaceous boundary". Palaeontology. 53 (1): 201–214. Bibcode:2010Palgy..53..201P. doi:10.1111/j.1475-4983.2009.00926.x. S2CID 129026651.
2. Rauhut, Oliver W. M.; Piñuela, Laura; Castanera, Diego; García-Ramos, José-Carlos; Cela, Irene Sánchez (2018-07-05). "The largest European theropod dinosaurs: remains of a gigantic megalosaurid and giant theropod tracks from the Kimmeridgian of Asturias, Spain". PeerJ. 6: e4963. doi:10.7717/peerj.4963. ISSN 2167-8359. PMC 6035862. PMID 30002951.
3. Lockley, M.; Harris, J.D.; and Mitchell, L. 2008. "A global overview of pterosaur ichnology: tracksite distribution in space and time." Zitteliana. B28. p. 187-198. ISSN 1612-4138.
4. Santos, Artai A.; Sender, Luis Miguel; Piñuela, Laura; García-Ramos, Jose Carlos; Diez, José B. (2022-09-27). "First evidence of Ricciaceae in the Jurassic of the Iberian Peninsula (Asturias, NW Spain): Ricciopsis asturicus sp. nov". Botany Letters. 169 (4): 557–567. Bibcode:2022BotL..169..557S. doi:10.1080/23818107.2022.2124452. ISSN 2381-8107. S2CID 252575717.