Where: Portugal (40.0° N, 8.5° W: paleocoordinates 31.2° N, 4.7° E)

• coordinate stated in text

• small collection-level geographic resolution

When: Brenha Formation, Bifrons (182.0 - 175.6 Ma)

• sample from bifrons ammonite zone

• bed-level stratigraphic resolution

Environment/lithology: basinal (); gray marl

Size class: microfossils

Collection methods: surface (in situ), chemical,

• assemblage based on 100 g dry weight of sample

Primary reference: I. Boomer, N.R. Ainsworth, and J. Exton. 1998. A re-examination of the Pliensbachian and Toarcian Ostracoda of Zambujal, west-central Portugal. Journal of Micropalaeontology 17(1):1-14 [A. Miller/K. Layou/K. Layou]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 33479: authorized by Arnold Miller, entered by Karen Layou on 31.07.2003

Creative Commons license: CC BY (attribution)