Where: Chubut, Argentina (45.9° S, 67.6° W: paleocoordinates 46.8° S, 60.8° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Chenque Formation, Late/Upper Oligocene to Late/Upper Oligocene (28.4 - 16.0 Ma)

Environment/lithology: terrestrial; lithified lithology not reported

Size class: microfossils

• Other: Palinology.

Preservation: soft parts, original sporopollenin

Collection methods: bulk, chemical, hydrochloric, hydroflouric,

• Repository: Paleobotany and Palinology section, Centro de Investigaciones en Recursos Geológicos (CIRGEO).

•Based on assemblage variations, four informal palynozones are designated in ascending order as follows: Lower (A) Palynozone, Transition (T) Palynozone, Middle (B) Palynozone, Upper (C) Palynozone. The samples was taken from six localities: Chenque hill, Antena hill, Punta Delgada, Playa Las Cuevas and Cañadon Baumann.

Primary reference: V. Barreda. 1997. Palinomorph assemblage of the Chenque Formation, Late Oligocene?- Miocene from Golfo San Jorge Basin, Patagonia, Argentina, Part 1: terrestrial Algae, trilete and monolete spores. Ameghiniana 34(1):69-80 [C. Jaramillo/J. Ceballos/A. Cardenas ]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 143212: authorized by Carlos Jaramillo, entered by Juliana Ceballos on 20.04.2013

Creative Commons license: CC BY (attribution)