Where: Ventura County, California (34.3° N, 118.7° W: paleocoordinates 35.0° N, 104.7° W)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Llajas Formation, Lutetian (47.8 - 41.3 Ma)
• Immediately below the "Stewart Bed", middle of the Llajas Formation, "Domengine" stage, top of CP12a calcareous nannoplankton zone, lower Lutetian stage, Middle Eocene, C21r chron.
• bed-level stratigraphic resolution
Environment/lithology: transition zone or lower shoreface; lithified, argillaceous siltstone and bioturbated sandstone
Size class: macrofossils
Preservation: mold/impression
Reposited in the LACM
• Collected by R.L. Squires, (1978) and CSUN paleontology classes in the 1980's-1990's and G. Slak (1997-1998)
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 51922: authorized by Austin Hendy, entered by Austin Hendy on 04.07.2005, edited by Jonathan Marcot and Patricia Holroyd
Creative Commons license: CC BY (attribution)
Taxonomic list
Foraminifera | |
"Pseudophragmina (Proporocyclina) clarki" = Pseudophragmina clarki2
"Pseudophragmina (Proporocyclina) clarki" = Pseudophragmina clarki2 Cushman 1920 | |
Echinoidea | |
? Brochopleurus sp. sea urchin | |
Chondrichthyes | |
? Myliobatis sp. Cuvier 1816 eagle ray | |
Rhynchonellata | |
Terebratalia aff. batequia Sandy et al. 1995 | |
Bivalvia | |
"Ostrea idriaensis" = Acutostrea idriaensis2
| |
"Pinna lewisi" = Pinna (Pinna) lewisi2
| |
Pteria pellucida Gabb 1864 pearl oyster | |
"Acanthocardia (Schedocardia) brewerii" = Schedocardia brewerii2, "Nemocardium linteum" = Nemocardium (Nemocardium) linteum2
| |
"Gari texta" = Gari (Gobraeus) texta
"Gari texta" = Gari (Gobraeus) texta Gabb 1864 clam | |
Gastrochaena ? dubitata Hanna 1927 clam | |
| |
Scaphopoda | |
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Gastropoda | |
"Fusiturricula (Crenaturricula) crenatospira" = Crenaturricula crenatospira2
"Fusiturricula (Crenaturricula) crenatospira" = Crenaturricula crenatospira2 Cooper 1894 snail as Fusiturricula (Crenaturricula) crenatospira domenginica
| |
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Platyoptera pacifica Squires and Demetrion 1990 true conch | |
| |
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Cephalopoda | |
Kummelonautilus sp. Matsumoto 1984 | |
Malacostraca | |
"Parribacus caesius n. sp." = Llajassus caesius
"Parribacus caesius n. sp." = Llajassus caesius Squires 2001 slipper lobster | |
Raninoides slaki n. sp.
Raninoides slaki n. sp. Squires 2001 crab | |
Eonomus californianus n. gen. n. sp.1
| |
Portunites insculpta Rathbun 1926 crab | |
"Glyphithyreus weaveri" = Orbitoplax weaveri2
| |
Anthozoa | |
Trochocyathus stantoni Vaughan 1900 stony coral |