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

Also known as Loc. 13

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 the upper of two horizons. 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 43758: authorized by Austin Hendy, entered by Austin Hendy on 25.08.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

• Representative.
Bivalvia
 Nuculanida - Nuculanidae
"Leda sp." = Nuculana
"Leda sp." = Nuculana Link 1807 pointed nut clam
 Ostreida - Ostreidae
Ostrea sp. Linnaeus 1758 oyster
 Ostreida - Pinnidae
Pinna sp. Linnaeus 1758 oyster
 Pectinida - Pectinoidae
Pecten sp. Müller 1776 scallop
 Arcida - Glycymerididae
"Glycymeris aff. veatchii" = Glycymerita veatchii
"Glycymeris aff. veatchii" = Glycymerita veatchii Gabb 1864 clam
Listed as "Glycymeris n. sp. aff. veatchii var. major"
 Carditida - Carditidae
Venericardia (Pacificor) sp.1 Verástegui 1953 clam
 Carditida - Crassatellidae
"Crassatellites sp." = Crassatella
"Crassatellites sp." = Crassatella Lamarck 1799 clam
 Cardiida - Cardiidae
"Cardium cooperii" = Nemocardium (Nemocardium) linteum
"Cardium cooperii" = Nemocardium (Nemocardium) linteum Conrad 1855 cockle
 Cardiida - Mactridae
Mactromeris sp.2 Conrad 1868 clam
 Cardiida - Veneridae
 Lucinida - Lucinidae
Phacoides sp. Blainville 1825 clam
"Phacoides cf. diegoensis" = Claibornites (Claibornites) diegoensis Dickerson 1916 clam
Scaphopoda
 Dentaliida - Dentaliidae
Dentalium cooperi Gabb 1864 tusk shell
Gastropoda
 Neogastropoda - Pyropsidae
"Heteroterma gabbi" = Pyropsis gabbi
"Heteroterma gabbi" = Pyropsis gabbi Stanton 1896 snail
 Neogastropoda - Clavatulidae
"Surcula sp." = Turricula
"Surcula sp." = Turricula Schumacher 1817 snail
 Sorbeoconcha - Naticidae
Amauropsis sp., "Natica (Gyrodes) cf. lineata" = Lacunaria striata
Amauropsis sp. Mörch 1857 moon snail
"Natica (Gyrodes) cf. lineata" = Lacunaria striata Gabb 1869 moon snail
 Cerithioidea - Turritellidae
Turritella sp. Lamarck 1799 turret shell
Turritella pachecoensis Stanton 1896 turret shell