Blasi 1b, Arén (Cretaceous of Spain)

Also known as Blasi 1.5

Where: Aragón, Spain (42.3° N, 0.7° E: paleocoordinates 34.3° N, 0.6° E)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: La Posa Formation (Tremp Group), Late/Upper Maastrichtian (70.6 - 66.0 Ma)

• lower part of formation, "equivalent stratigraphic position" to Blasi 2; upper part of chron c30n, 65.6-68.7 mya

•The Conques Formation is equivalent to the "lower Red Garumen" facies. The Conques Formation was previously assigned a late maastrichtian age (Sellés and Villa 2015; Villa et al. 2015) Biostratigraphy and Sr stable isotope geochemistry suggest that the La Posa and Conques Formation are entirely early Maastrichtian, lying within chron C31r (see Caus et al. 2016; Oms et al. 2016; Fondevilla et al. 2016; Fondevilla et al. 2019).

•Actually in thee "Grey Garumnian" = La Posa Fm.

• bed-level stratigraphic resolution

Environment/lithology: lagoonal or restricted shallow subtidal; gray marl

• "grey marls"

Size class: macrofossils

Collected in 1997–1998

Collection methods: quarrying, mechanical,

Primary reference: J. I. Canudo, L. Ardévol, G. Cuenca-Bescós, N. López-Martínez, X. Murelaga, X. Pereda-Suberbiola, J. I. Ruiz-Omeñaca and X. Orue-Etxebarria. 1999. New dinosaur localities near the Cretaceous/Tertiary boundary from Arén (Huesca, Spain). In J. I. Canudo & G. Cuenca-Bescós (ed.), IV European Workshop on Vertebrate Paleontology. Programme and Abstracts. Field Guide 40-41 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 45436: authorized by Matthew Carrano, entered by Matthew Carrano on 22.10.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Dinosauria -
 Ornithischia - Hadrosauridae
Hadrosauridae indet. Cope 1869 hadrosaurid