Where: Neuquén, Argentina (38.1° S, 68.4° W: paleocoordinates 40.6° S, 56.8° W)

• coordinate based on unpublished field data

• small collection-level geographic resolution

When: Jagüel Formation (Malargüe Group), Danian (66.0 - 61.6 Ma)

• K/T boundary is at 0 m (top of boundary layer). Beds lumped over 1.20 m. Data from bed/horizon refers to midpoint of sampled beds.

• group of beds-level stratigraphic resolution

Environment/lithology: offshore; lithified, gray, green, calcareous mudstone

Size classes: macrofossils, mesofossils

Preservation: cast, mold/impression, original calcite, replaced with calcite

Collected by Aberhan, M., Kiessling, W., Weidemeyer, S. in 2004

Collection methods: bulk, mechanical,

• Number of individuals was determined according to standard procedures. Bivalves: articulated valves plus larger number of right or left valves plus half of undetermined fragments.

Primary reference: S. Weidemeyer. 2007. Molluscs at the K/Pg boundary in Argentina: Extinction and recovery patterns. unpublished Ph.D. thesis. [W. Kiessling/S. Weidemeyer]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 73941: authorized by Wolfgang Kiessling, entered by Sven Weidemeyer on 13.07.2007, edited by Wolfgang Kiessling

Creative Commons license: CC BY (attribution)