Where: Nuevo Leon, Mexico (26.7° N, 100.0° W: paleocoordinates 28.0° N, 69.0° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Agua Nueva Formation, Early/Lower Turonian (93.5 - 89.3 Ma)

• STRATIGRAPHIC RELATIONS: From the Agua Nueva Fm. AGE: Early Turonian, on the basis of ammonite biostratigraphy; Watinoceras zone. STRATIGRAPHIC POSITION: From -0.65-0.21 m in Vallecillo Quarry.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified, concretionary, pyritic limestone and lithified, calcareous marl

Size class: macrofossils

Preservation: mold/impression, concretion

Collected by Ifrim

Collection methods: bulk, surface (in situ),

• COLLECTOR: Ifrim. REPOSITORY: Facultad de Ciencias de la Tierra of the Uni-

•versidad Auto ́ noma de Nuevo Leo ́ n at Linares, Nuevo Leo ́ n (abbreviation: UANL-FCT-VC; VC for Vallecillo)

Primary reference: C. Ifrim and W. Stinnesbeck. 2007. Early Turonian ammonites from Vallecillo, north-eastern Mexico: ttaxonomy, biostratigraphy and palaeobiogeographical significance. Cretaceous Research 28:642-663 [A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 87883: authorized by Austin Hendy, entered by Austin Hendy on 27.03.2009

Creative Commons license: CC BY (attribution)