Also known as USGS#18998
Where: Orange County, California (33.8° N, 117.8° W: paleocoordinates 34.5° N, 103.7° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Santiago Formation, Lutetian (47.8 - 41.3 Ma)
• LITHOSTRATIGRAPHIC RELATIONS: From the Santiago Fm, which overlies the Silverado Fm (Paleocene) and is overlain by the Sespe and Vaqueros Fms (Eocene-E. Miocene). AGE: Middle Eocene, on the basis of molluscan and foraminiferal biostratigraphy; from the Ulatisian Stage of Mallory (1959), on the basis of benthic forams and the Discosaster sublodoensis nannoplankton zone (Poore, 1976).
• bed-level stratigraphic resolution
Environment/lithology: coastal; lithified, pebbly sandstone and lithified, concretionary siltstone
Size class: macrofossils
Collected by Kinney; reposited in the USGS
Collection methods: surface (in situ),
• COLLECTORS: D.M. Kinney. REPOSITORY: USGS.
Primary reference: J. E. Schoellhamer, J. G. Vedder, R. F. Yerkes and D. M. Kinney. 1981. Geology of the Northern Santa Ana Mountains, California. United States Geological Survey Professional Paper 420(D):1-109 [J. Alroy/J. Alroy/R. McClees-Funinan]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 94825: authorized by Austin Hendy, entered by Austin Hendy on 29.03.2010, edited by Jonathan Marcot
Creative Commons license: CC BY (attribution)
Taxonomic list
Gastropoda | |
Turritella cf. buwaldana Dickerson 1916 turret shell
Turritella uvasana Conrad 1855 turret shell | |
Pachycrommium clarki Stewart 1927 snail | |
Calyptraea diegoana Conrad 1855 slipper shell
Crepidula (Spirocrypta) cf. pileum Gabb 1864 slipper shell | |
"Bittium cf. alternatum" = Cerithiopsis alternata
"Bittium cf. alternatum" = Cerithiopsis alternata Gabb 1864 snail | |
| |
Galeodea sp. Link 1807 snail | |
"Ectinochilus (Cowlitzia) cf. supraplicatus" = Rimella supraplicata
"Ectinochilus (Cowlitzia) cf. supraplicatus" = Rimella supraplicata Gabb 1864 true conch | |
Molopophorus cf. antiquatus Gabb 1864 snail | |
Turridae indet. Swainson 1840 turrid | |
Conus cf. remondii Gabb 1864 cone shell | |
? Crommium sp., "Tejonia cf. lajollaensis" = Tejonia moragai, ? Euspirocrommium sp., "Euspira cf. nuciformis" = Polinices (Euspira) nuciformis
? Crommium sp. Cossmann 1888 moon snail
"Tejonia cf. lajollaensis" = Tejonia moragai Stewart 1927 moon snail
? Euspirocrommium sp. Sacco 1890 moon snail
"Euspira cf. nuciformis" = Polinices (Euspira) nuciformis Gabb 1864 moon snail | |
? Cylichnina cf. tantilla Anderson and Hanna 1925 snail | |
"Megistostoma cf. gabbiana" = Megistostoma gabbianum
"Megistostoma cf. gabbiana" = Megistostoma gabbianum Stoliczka 1868 snail | |
Scaphander (Mirascapha) cf. costatus Gabb 1864 snail | |
Bivalvia | |
Ostrea sp. Linnaeus 1758 oyster | |
"Glycymeris cf. sagittata" = Glycymeris (Glycymerita) sagittata
"Glycymeris cf. sagittata" = Glycymeris (Glycymerita) sagittata Gabb 1864 clam | |
"Corbula cf. parilis" = Caryocorbula parilis, Corbula sp.
"Corbula cf. parilis" = Caryocorbula parilis Gabb 1864 clam
Corbula sp. Bruguière 1789 clam | |
? Pitar sp. Römer 1857 venus clam | |
Cardiidae indet. Lamarck 1809 cockle | |
Crassatella cf. uvasana Conrad 1855 clam | |
Venericardia (Pacificor) cf. hornii Gabb 1864 clam |