CSUN Loc. 1220c [Bateque Fm] (Eocene of Mexico)

Where: Baja California Sur, Mexico (26.8° N, 113.0° W: paleocoordinates 29.0° N, 96.4° W)

• outcrop-level geographic resolution

When: Bateque Formation, Ypresian (56.0 - 47.8 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: transition zone or lower shoreface; poorly lithified, bioturbated, shelly/skeletal, yellow sandstone and lithified limestone

• 90 m thick shallow-marine deposits that...consist of bioturbated and parallel-laminated, yellow, very fine-grained sandstone (75%) with many interbedded lenses (25%) filled with abundant macrofossils. lenses are described as poorly sorted coquinas.

Size class: macrofossils

Reposited in the LACM

Primary reference: R. L. Squires and R. A. Demetrion. 1992. Paleontology of the Eocene Bateque Formation, Baja California Sur, Mexico. Contributions in Science (Natural History Museum of Los Angeles County) 434:1-55 [A. Miller/K. Layou]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 5497: authorized by Arnold Miller, entered by Karen Layou on 07.10.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Gastropoda
 Cerithioidea - Turritellidae
"Turritella lawsoni" = Turritella andersoni lawsoni
"Turritella lawsoni" = Turritella andersoni lawsoni Dickerson 1916 turret shell
Turritella andersoni lawsoni
 Neogastropoda - Harpidae
Eocithara sp.
Eocithara sp. Fischer 1883 snail
 Pteropoda - Clionidae
Clionidae indet.
Clionidae indet. Rafinesque 1815 snail
Bivalvia
 Ostreida - Gryphaeidae
"Pycnodonte pacifica" = Phygraea pacifica
"Pycnodonte pacifica" = Phygraea pacifica Squires and Demetrion 1990 oyster
 Pectinida - Pectinoidae
Spondylus batequensis
Spondylus batequensis Squires and Demetrion 1990 scallop
Anthozoa
 Scleractinia - Caryophylliidae
Stephanocyathus ? sp.
Stephanocyathus ? sp. Seguenza 1864 stony coral
Foraminifera
 Nummulitacea - Asterocyclinidae
Pseudophragmina clarki