Arroyo Las Chilcas, levels 1422, 1424-1425 (Jurassic of Argentina)

Where: Mendoza, Argentina (34.9° S, 69.8° W: paleocoordinates 35.0° S, 30.2° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Jamesoni (189.6 - 183.0 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified shale and lithified sandstone

Size class: macrofossils

Collection methods: Repository: Museo de La Plata (MLP)

Primary reference: A. C. Riccardi, S. E. Damborenea, M. O. Mancenido and S. C. Ballent. 1991. Hettangian and Sinemurian (Lower Jurassic) biostratigraphy of Argentina. Journal of South American Earth Sciences 4(3):159-170 [A. Miller/D. Schramm/M. Uhen]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 42771: authorized by Arnold Miller, entered by Danielle Schramm on 05.08.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Ammonitida - Coeloceratidae
Miltoceras sp. Wiedenmayer 1980 ammonite
Miltoceras cf. sellae Gemmellaro 1884 ammonite
Bivalvia
 Nuculanida - Malletiidae
 Arcida - Parallelodontidae
 Pectinida - Monotidae
Otapiria neuquensis Damborenea 1987 scallop
 Cardiida - Kalenteridae
Kalentera sp. Marwick 1953 clam