CSUN Loc. 1291a [Bateque Fm] (Eocene of Mexico)

Where: Baja California, Mexico (26.7° N, 112.9° W: paleocoordinates 28.9° N, 96.4° W)

• outcrop-level geographic resolution

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

• This collection is from section 2 of the author's four section division of the formation.

• 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 5499: authorized by Arnold Miller, entered by Karen Layou on 07.10.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

Foraminifera
 Nummulitacea - Asterocyclinidae
Chlorophyceae
 Dasycladales - Dasycladaceae
Dasycladaceae indet. Kutzing 1843
Anthozoa
 Scleractinia - Merulinidae
Antillia batequensis n. sp. Squires and Demetrion 1992 stony coral
 Scleractinia - Caryophylliidae
Stephanocyathus ? sp. Seguenza 1864 stony coral
Gastropoda
 Trochoidea - Turbinidae
Arene mcleani Squires 1988 snail
 Cerithioidea - Siliquariidae
Tenagodus bajaensis n. sp. Squires 1990 snail
 Cerithioidea - Turritellidae
Turritella andersoni Dickerson 1916 turret shell
 Architaenioglossa - Ampullinidae
Eocernina hannibali Dickerson 1914 snail
Pachycrommium clarki Stewart 1927 snail
 Neogastropoda - Fasciolariidae
Clavilithes tabulatus Dickerson 1913 snail
 Neogastropoda - Volutidae
Lyria andersoni Waring 1917 volute
 Sorbeoconcha - Naticidae
Gyrodes ? sp. Conrad 1860 moon snail
 Neritoidea - Neritidae
Velates perversus Gmelin 1791 snail
Bivalvia
 Pectinida - Plicatulidae
Plicatula sp. Lamarck 1801 scallop
Echinoidea
 Spatangoida - Schizasteridae
Schizaster sp. Agassiz 1835 heart urchin
Schizaster sp. aff. S. lecontei