LSJU Loc. 59, San Gregorio Lagoon (Miocene of Mexico)

Where: Baja California Sur, Mexico (26.2° N, 112.3° W: paleocoordinates 25.3° N, 105.9° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Isidro Formation, Early/Lower Miocene (23.0 - 16.0 Ma)

• STRATIGRAPHIC RELATIONS: From the Isidro Formation, for which lithostratigraphic relationships are not discussed. AGE: Lower Miocene. STRATIGRAPHIC POSITION: From "Turritella bed" of unknown position.

• bed-level stratigraphic resolution

Environment/lithology: marine; fine-grained, white sandstone

• SPECIFIC LITHOLOGY: Fine-grained white sandstone. LITHIFICATION: Unknown.

Size class: macrofossils

Collection methods: surface (in situ),

• COLLECTOR: E.C. Brown. REPOSITORY: Unknown, possibly LSJU.

Primary reference: L. G. Hertlein and E. K. Jordan. 1927. Paleontology of the Miocene of Lower California. Proceedings of the Academy of Sciences 16(19):605-647 [A. Hendy/A. Hendy/J. Marcot]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 96568: authorized by Austin Hendy, entered by Austin Hendy on 12.06.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for molluscs. NOMENCLATURE: Authoritative publication, but with antiquated nomenclature, and variable species or genus resolution identifications.
Gastropoda
 Cerithioidea - Turritellidae
"Turritella ocoyana" = Turritella ocoyana, "Turritella wittichi n. sp." = Turritella ocoyana
"Turritella ocoyana" = Turritella ocoyana Conrad 1855 turret shell
"Turritella wittichi n. sp." = Turritella ocoyana Conrad 1855 turret shell
Bivalvia
 Pectinida - Pectinoidae
"Pecten (Lyropecten) pretiosus" = Lyropecten pretiosus
"Pecten (Lyropecten) pretiosus" = Lyropecten pretiosus Hertlein 1925 scallop
 Ostreida - Ostreidae
"Ostrea angermanni n. sp." = Dendostrea angermanni, "Ostrea freudenbergi n. sp." = Striostrea freudenbergi, Ostrea sp.
"Ostrea angermanni n. sp." = Dendostrea angermanni Hertlein and Jordan 1927 oyster
"Ostrea freudenbergi n. sp." = Striostrea freudenbergi Hertlein and Jordan 1927 oyster
Ostrea sp. Linnaeus 1758 oyster