Santa Rosalia, Salada Formation - Towaide (1930) (Pliocene of Mexico)

Where: Baja California Sur, Mexico (27.3° N, 112.3° W: paleocoordinates 27.1° N, 111.0° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Lower Member, Early/Lower Pliocene (5.3 - 3.6 Ma)

• Areanceous tuffs on top of basal dolomite. Represents lower Salada Group (=San Marcos Formation) according to Touwaide (1930).

• bed-level stratigraphic resolution

Environment/lithology: marine; unlithified, tuffaceous sandstone

• No paleoenvrionmental data reported. Likely to be shallow water silciclastic facies however.
• Areanceous tuffs.

Size class: macrofossils

Reposited in the UCMP

• Material reposited in the UCMP collections.

Primary reference: J. W. Durham. 1950. 1940 E.W. Scripps cruise to the Gulf of California. Part II - Megascopic paleontology and marine stratigraphy. Geological Society of America Memoir 43(2) [A. Miller/A. Hendy/A. Hendy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 44022: authorized by Austin Hendy, entered by Austin Hendy on 31.08.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

• Exhaustive. Identified by J.W. Durham.
Show authors, comments, and common names
Gastropoda
 Neogastropoda - Conidae
Conus sp.
Conus sp. Linnaeus 1758 cone shell
 Sorbeoconcha - Cassidae
Cassis cf. abbreviatus
Bivalvia
 Pectinida - Pectinoidae
Pecten (Pecten) carrizoensis, Pecten (Pecten) keepi, Argopecten sp., "Aequipecten abietis" = Argopecten abietis
Pecten (Pecten) carrizoensis Arnold 1906 scallop
Pecten (Pecten) keepi Arnold 1906 scallop
Argopecten sp. Monterosato 1889 calico scallop
"Aequipecten abietis" = Argopecten abietis Jordan and Hertlein 1926 calico scallop
 Arcida - Glycymerididae
Glycymeris sp.
Glycymeris sp. Da Costa 1778 clam
 Cardiida - Cardiidae
Cardium sp.
Cardium sp. Linnaeus 1758 cockle