Salitral de La Amarga 2 (Cretaceous of Argentina)

Where: La Pampa, Argentina (36.6° S, 68.2° W: paleocoordinates 38.8° S, 55.8° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Roca Formation (Malargue Group), Maastrichtian (72.1 - 66.0 Ma)

• formation-level stratigraphic resolution

Environment/lithology: shallow subtidal; lithified, fine-grained, medium, shelly/skeletal limestone

• Limestones. From the published stratigraphic section: predominately sequences of course grained mudstone, wackestone, packstone and grainstone with medium grained shale and fine to medium grained sandstone with some planar bedding and fossils.

•

Size classes: macrofossils, mesofossils

Primary reference: M. Griffin, A. Parras, and S. Casadío. 2008. Late Maastrichtian-Danian Mytilids and Pinnids (Mollusca: Bivalvia) from Northern Patagonia, Argentina. Ameghiniana 45(1):139-152 [J. Sessa/L. Eccles/J. Sessa]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 106091: authorized by Jocelyn Sessa, entered by Laurie Eccles on 02.03.2011, edited by Evangelos Vlachos

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Bivalvia
 Mytilida - Crenellidae
Gregariella amara n. sp.
Gregariella amara n. sp. Griffin et al. 2008 clam
 Mytilida - Mytilidae
Septifer mayai n. sp.
Septifer mayai n. sp. Griffin et al. 2008 mussel
 Ostreida - Flemingostreidae
Ambigostrea clarae
Ambigostrea clarae Ihering 1907 oyster
 Ostreida - Gryphaeidae
Gyrostrea lingua, Amphidonte mendozana
Gyrostrea lingua Sowerby 1840 oyster
Amphidonte mendozana Ihering 1907 oyster