PBDB Collection

CSUN Loc. 1293 [Bateque Fm] (Eocene of Mexico)

Where: Baja California, Mexico (26.3° N, 112.5° W: paleocoordinates 26.8° N, 98.7° W)

• outcrop-level geographic resolution

When: Bateque Formation, Lutetian (47.8 - 41.3 Ma)

• This collection is from section 4 of the author's four section division of the formation.

• group of beds-level stratigraphic resolution

Environment/lithology: offshore; poorly lithified, firmground, gray mudstone

• a 9 m thick interval of reddish gray mudstone with abundant remains of large benthic foraminifers

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 5505: authorized by Arnold Miller, entered by Karen Layou on 08.10.1999, edited by Susan Tremblay and Mark Uhen

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names

Echinoidea
Cidaroida -	Cidaroida indet. Cidaroida indet. Claus 1880 pencil urchin spine A, spine b
Bivalvia
Ostreida - Ostreidae	Cubitostrea mezquitalensis Cubitostrea mezquitalensis Squires and Demetrion 1990 oyster
Ostreida - Gryphaeidae	Pycnodonte bajaensis, "Pycnodonte pacifica" = Phygraea pacifica Pycnodonte bajaensis Squires and Demetrion 1990 oyster "Pycnodonte pacifica" = Phygraea pacifica Squires and Demetrion 1990 oyster
Pectinida - Pectinoidae	Batequeus mezquitalensis Batequeus mezquitalensis Squires and Demetrion 1990 scallop
Pectinida - Plicatulidae	Plicatula sp., ? Plicatula "sp. b"² Plicatula sp. Lamarck 1801 scallop ? Plicatula "sp. b"² Lamarck 1801 scallop
Cardiida - Cardiidae	"Acanthocardia aff. sorrentoensis" = Agnocardia sorrentoensis, "Nemocardium linteum" = Nemocardium (Nemocardium) linteum "Acanthocardia aff. sorrentoensis" = Agnocardia sorrentoensis Hanna 1927 cockle "Nemocardium linteum" = Nemocardium (Nemocardium) linteum Conrad 1855 cockle
Pholadomyida - Pholadomyidae	Pholadomya sp. Pholadomya sp. Sowerby 1823 clam Pholadomya sp. cf. P. givensi
Gastropoda
Opisthobranchia - Philinidae	Megistostoma gabbianum Megistostoma gabbianum Stoliczka 1868 snail
Sorbeoconcha - Strombidae	Rimella supraplicata¹, "Ectinochilus sp." = Rimella Rimella supraplicata¹ Gabb 1864 true conch "Ectinochilus sp." = Rimella Agassiz 1840 true conch Ectinochilus sp. cf. E. macilentus
Foraminifera
Nummulitacea - Nummulitidae	Operculina sp. Operculina sp.
Nummulitacea - Asterocyclinidae	Pseudophragmina advena Pseudophragmina advena Cushman 1921
Orbitoidacea - Lepidocyclinidae	Lepidocyclina sp. Lepidocyclina sp.

¹Squires 2013; ²Squires and Saul 1997