Locality 13a, Puerto Santa Catarina - Beal (1948) (Eocene of Mexico)

Also known as Loc. 13a

Where: Baja California Sur, Mexico (31.6° N, 115.8° W: paleocoordinates 31.8° N, 102.6° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Tepetate Formation, Middle Eocene (48.6 - 37.2 Ma)

• Collected from beds 200 feet lower that loc.# 13. Paleocene and Eocene series are named the Tepetate Formation in Baja California. The strata probably underlie a large part of the region covered by latter rocks, the uppermost beds lapping over the edges of the older formations and lying on the granite of the main range. Determined to be middle Eocene (upper Martinez faunal similarities) by Gardner.

• bed-level stratigraphic resolution

Environment/lithology: deltaic; fine-grained, yellow siltstone and sandstone

• The formation shows strong evidence of being a delta and near-shore deposit.
• In many places it is composed largely of fine yellow silt and contains sandstone beds with mammoth cross-bedding.

Size class: macrofossils

Collection methods: quarrying,

• Collected by Darton. Collection studied and determined by J. Gardner. No known repository.

Primary reference: C. H. Beal. 1948. Reconnaissance of the geology and oil possibilities of Baja California, Mexico. Geological Society of America Memoir 31 [A. Miller/A. Hendy/A. Hendy]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 43757: authorized by Austin Hendy, entered by Austin Hendy on 25.08.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

• Representative.
Bivalvia
 Ostreida - Ostreidae
Ostrea sp. Linnaeus 1758 oyster
 Pectinida - Limidae
"Lima multiradiata" = Acesta (Acesta) multiradiata
"Lima multiradiata" = Acesta (Acesta) multiradiata Gabb 1869 file clam
 Pectinida - Anomiidae
Anomia sp. Linnaeus 1758 jingle
 Arcida - Cucullaeidae
Cucullaea mathewsonii Gabb 1864 clam
 Lucinida - Lucinidae
Phacoides sp. Blainville 1825 clam