PBDB Collection

CSUN Loc. 1470 [Bateque Fm] (Eocene of Mexico)

Where: Baja California, Mexico (26.5° N, 112.7° W: paleocoordinates 28.7° N, 96.2° 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 5506: authorized by Arnold Miller, entered by Karen Layou on 08.10.1999, edited by Amanda Doyle and Mark Uhen

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names

Chlorophyceae
Dasycladales - Dasycladaceae	Dasycladaceae indet. Dasycladaceae indet. Kutzing 1843
Foraminifera
Nummulitacea - Asterocyclinidae	Pseudophragmina clarki Pseudophragmina clarki Cushman 1920 ? in locality data
Sedentaria
Sabellida - Serpulidae	Serpula batequensis n. sp. Serpula batequensis n. sp. Squires and Demetrion 1992
Gastropoda
Neritoidea - Neritidae	Velates perversus Velates perversus Gmelin 1791 snail
Cerithioidea - Turritellidae	Turritella uvasana Turritella uvasana Conrad 1855 turret shell s.s.
Sorbeoconcha - Naticidae	Gyrodes ? sp. Gyrodes ? sp. Conrad 1860 moon snail
Neogastropoda - Olividae	? Olivella mathewsonii ? Olivella mathewsonii Gabb 1864 olive snail
Neogastropoda - Fasciolariidae	Clavilithes tabulatus Clavilithes tabulatus Dickerson 1913 snail
Neogastropoda - Volutidae	Lyrischapa lajollaensis Lyrischapa lajollaensis Hanna 1927 volute
Sorbeoconcha - Strombidae	Platyoptera pacifica, Rimella supraplicata¹, "Ectinochilus sp." = Rimella Platyoptera pacifica Squires and Demetrion 1990 true conch ? in locality data Rimella supraplicata¹ Gabb 1864 true conch "Ectinochilus sp." = Rimella Agassiz 1840 true conch Ectinochilus sp. cf. E. macilentus
Sorbeoconcha - Seraphsidae	Paraseraphs erraticus Paraseraphs erraticus Cooper 1894 snail
Sorbeoconcha - Cassidae	Galeodea sp. Galeodea sp. Link 1807 snail
Sorbeoconcha - Cymatiidae	"Olequahia domenginica" = Ranella domenginica "Olequahia domenginica" = Ranella domenginica Vokes 1939 snail
Opisthobranchia - Cylichnidae	Scaphander ? sp. Scaphander ? sp. Monfort 1810 snail
Opisthobranchia - Retusidae	Cylichnina tantilla Cylichnina tantilla Anderson and Hanna 1925 snail
Bivalvia
Ostreida - Gryphaeidae	Pycnodonte bajaensis, "Pycnodonte pacifica" = Phygraea pacifica Pycnodonte bajaensis Squires and Demetrion 1990 oyster "Pycnodonte pacifica" = Phygraea pacifica Squires and Demetrion 1990 oyster
Ostreida - Pinnidae	Pinna llajasensis Pinna llajasensis Squires 1983 oyster collected as float
Solenida - Solenidae	"Solena novacularis" = Solena (Eosolen) novacularis "Solena novacularis" = Solena (Eosolen) novacularis Anderson and Hanna 1925 clam
Cardiida - Veneridae	Pitar joaquinensis Pitar joaquinensis Vokes 1939 venus clam
Echinoidea
Spatangoida - Brissidae	Eupatagus batequensis n. sp. Eupatagus batequensis n. sp. Squires and Demetrion 1992 heart urchin
Spatangoida - Schizasteridae	Schizaster sp. Schizaster sp. Agassiz 1835 heart urchin schizaster sp. aff. S. lecontei
Echinolampadoida - Echinolampadidae	Echinolampas ? sp. Echinolampas ? sp. Gray 1825 sea urchin both Echinolampas sp. a and Echinolampas sp. b
Clypeasteroida - Oligopygidae	Haimea bajasurensis n. sp.² Haimea bajasurensis n. sp.² Squires and Demetrion 1994 sand dollar

¹Squires 2013; ²Squires and Demetrion 1994