Locality 10, Bracket Mesa - Beal (1948) (Paleocene of Mexico)

Also known as Loc. 10

Where: Baja California Sur, Mexico (31.8° N, 116.6° W: paleocoordinates 36.0° N, 96.0° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Tepetate Formation, Paleocene (66.0 - 56.0 Ma)

• 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. Related to both Martinez (Paleocene) and Tejon) Eocene) of Californa, although further work suggests Paleocene faunal affinities are stronger.

• 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,

• Collection studied and determined by J. Smith (Stanford), Gardner and Stewart (USGS). 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 43763: authorized by Austin Hendy, entered by Austin Hendy on 25.08.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

• Representative.
unclassified
  -
Bivalvia
 Carditida - Carditidae
Venericardia sp. Lamarck 1801 clam
 Arcida - Cucullaeidae
Cucullaea mathewsonii Gabb 1864 clam
Gastropoda
 Cerithioidea - Cerithiidae
Cerithium sp. Bruguière 1789 cerith snail
Listed a "Cerithium 2 sp., cf. large Cerithia from St. Bartholomew"
 Cerithioidea - Turritellidae
Turritella variata Conrad 1857 turret shell