Where: Sonora, Mexico (29.5° N, 109.5° W: paleocoordinates 29.6° N, 72.4° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Mortoniceras inflatum - Mortoniceras fallax ammonoid zone, Nogal Formation, Late/Upper Albian (105.3 - 99.6 Ma)

• From uppermost member, Member 3. PJW: the upper part of the formation spans the Mortoniceras inflatum to Mortoniceras fallax zones.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified limestone

Size class: macrofossils

Collected by C.M. Garcia-Leon

• Repository: Estacion Regional del Noroeste, Universidad Nacional Autonoma de Mexico (Hermosillo, Sonora, Mexico).

Primary reference: E. Robert, A. Samaniego-Pesqueira, J. A. Moreno-Bedmar and C. M. González-León. 2018. Aptian and Albian (Early Cretaceous) ammonites from Lampazos and the Bisbee groups (Sonora State, northwest Mexico). Cretaceous Research 86:1-23 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 191941: authorized by Matthew Clapham, entered by Matthew Clapham on 24.02.2018

Creative Commons license: CC BY (attribution)