Barranc de la Costa Gran (Cretaceous of Spain)

Also known as Basturs-1, Orcau, Barranco de Bastús, Basturs-2, Point 8

Where: Cataluña, Spain (42.2° N, 1.0° E: paleocoordinates 34.2° N, 0.8° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Arén Formation, Late/Upper Maastrichtian (70.6 - 66.0 Ma)

• The fossil bed is a paleosol that developed on top of the Aren Sandstone Formation. It is overlain by the Tremp Formation. Originally assigned to "base of the Danian."

• bed-level stratigraphic resolution

Environment/lithology: coastal; paleosol/pedogenic, medium-grained, coarse, hematitic, intraclastic, red, calcareous sandstone and fine-grained, medium, gray, yellow sandstone

• "locality was fully in the terrestrial realm and an unknown distance away from the beach."; "exposed sandy sediments of a beach-ridge plain"
• fine to medium-grained red sandstone rich in eggshell fragments. Grains are subangular and float freely in a cement matrix of microsparite and hematite. It is underlain by the gray and yellow sandstones of the Aren Formation. "The matrix of the eggshell-bearing rock is a calcite-cementerd, medium-to-coarse-grained arenite of mixed siliciclastic and carbonate grain composition. Carbonate grains comprise different types of worn skeletal fragments dominated by shallow marine elements, intraclasts as well as dinosaur eggshell debris, and are generally affected by microbial mineralization."

•Rosell: "reddish gray sandstones, with calcareous cement, passing locally to micro-clays."

Size class: mesofossils

Collected by Kühne, Lapparent, Bézier, Glachant, Sanz in 1955, 1958

Collection methods: quarrying, surface (float), mechanical,

• 38 egg clutches in the outcrop; discovered September 1958 by A. Lapparent accompanied by C. Bézier and N. Glachant

Primary reference: A. F. d. Lapparent and E. Aguirre. 1956. Algunos yacimientos de Dinosaurios en el Cretácico Superior de la Cuenca de Tremp [Some dinosaur localities in the Upper Cretaceous of the Termp Basin]. Estudios Geológicos 12(31/32):377-382 [M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 55390: authorized by Matthew Carrano, entered by Kaitlin Maguire on 13.10.2005, edited by Matthew Carrano

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Gastropoda
 Architaenioglossa - Cyclophoridae
Cyclophorus sp.2 Montfort 1810 snail
 Rissooidea - Bithyniidae
Bulimidae indet.2 Guilding 1828 snail
 Pulmonata - Anadromidae
Reptilia
 Saurischia - Titanosauridae
Megaloolithus baghensis4 Khosla and Sahni 1995 titanosaurid
eggshells
 Neornithischia -
Hadrosauroidea indet.1 Huene 1954 bird foot dinosaur
MCD-5281, dentary