Also known as A 3543

Where: Baja California Sur, Mexico (32.4° N, 117.3° W: paleocoordinates 32.2° N, 116.0° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: San Marcos Formation, Early/Lower Pliocene (5.3 - 3.6 Ma)

• The volcanic breccia of the Comondu Formation, and clays are overlain with a marked angular unconformity by limestone, usually with scattered volcanic cobbles and boulders at the base. The lower part of the succession is predominantly a light colored algal limestone, while the upper part if a coral-reef zone or reworked coral limestone.

• bed-level stratigraphic resolution

Environment/lithology: coastal; calcareous conglomerate

Size class: macrofossils

Reposited in the UCMP

Collection methods: quarrying,

• 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 43840: authorized by Austin Hendy, entered by Austin Hendy on 26.08.2004

Creative Commons license: CC BY (attribution)