LACMIP #7405 (Eocene of the United States)

Where: Ventura County, California (34.3° N, 118.7° W: paleocoordinates 36.8° N, 101.7° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

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

• Turritella bed. From lower Llajas Formation, lower "Domengine" stage, lower CP12a calcareous nannoplankton zone, Ypresian stage, Lower Eocene, C22n chron.

• bed-level stratigraphic resolution

Environment/lithology: shoreface; lithified, bioturbated sandstone

• Listed as "shallow marine transgressive" - as from middle of unit, which appears to be transgressive, and below the apparent "maximum flooding/starvation zone", the shoreface environment is chosen for this collection, rather than shallow water indet.
• Alternating laminated and bioturbated sandstones grading into muddy siltstone.

Size class: macrofossils

Preservation: mold/impression

Reposited in the LACM

• Collected by W.P. Wooding and K.E. Lohman (1929)

Primary reference: R. L. Squires. 2001. Additions to the Eocene megafossil fauna of the Llajas Formation, Simi Valley, southern California. Contributions in Science (Natural History Museum of Los Angeles County) 489:1-40 [A. Miller/A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 51951: authorized by Austin Hendy, entered by Austin Hendy on 06.07.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

• Exhaustive for mollusca, corals, arthropoda, and includes other groups where obvserved; list compiled from meticulous search of the invert collections at the LACM, private collections and fieldwork.
Show authors, comments, and common names
Bivalvia
 Ostreida - Gryphaeidae
"Pycnodonte (Phygraea) cf. pacifica" = Phygraea pacifica
"Pycnodonte (Phygraea) cf. pacifica" = Phygraea pacifica Squires and Demetrion 1990 oyster