Where: Monterey County, California (36.2° N, 121.3° W: paleocoordinates 35.5° N, 116.9° W)
• coordinate stated in text
When: Pancho Rico Formation, Miocene (23.0 - 5.3 Ma)
• Described in reference as Pliocene. Pancho Rico Formation is Miocene per Addicott 1978 (Geological Survey Bulletin, Issue 1457).
Environment/lithology: marine; lithology not reported
•taxa are found only in collections from USGS localities M902 and M981 in Reliz Canyon. These localities are near the northwestern end of the outcrop area of the
•Pancho Rico and have an unusual faunal composition with respect to assemblages frmn the type area on Pancho Rico Creek and elsewhere on the east side of Salinas Valley. Water depths of 30 fathoms or more are suggested by the presence of Tu,rcica sp. and abundant Terebratalia arnoldi Hertlein and Grant.
Size class: macrofossils
Collected by D. L Durham in 1960
Primary reference: D. L. Durham and W. O. Addicott. 1965. Pancho Rico Formation, Salinas Valley. United States Geological Survey Professional Paper 524(A):A1-A22 [P. Holroyd/S. Tremblay]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 195081: authorized by Patricia Holroyd, entered by Susan Tremblay on 17.07.2018
Creative Commons license: CC BY (attribution)
Taxonomic list
Gastropoda | |
| |
? Diodora " ? aff. D. inaequalis " Gray 1821 snail | |
Crepidula "n. sp. aff. aculeata" Lamarck 1799 slipper shell
Calyptraea filosa Gabb 1866 slipper shell | |
Turritella "n. sp." Lamarck 1799 turret shell | |
Nassarius sp. Duméril 1806 snail | |
? Ceratostoma foliatum Gmelin 1791 murex snail
Ocenebra sp. Leach in Gray 1847 murex snail | |
? Cancellaria sp. Lamarck 1799 snail | |
Bivalvia | |
Anadara trilineata Conrad 1856 ark | |
Glycymeris sp. Da Costa 1778 clam | |
Chlamys "n. sp. aff. nipponensis" Röding 1798 scallop
Chlamys cf. hodgei Hertlein 1925 scallop | |
"Ostrea atwoodi" = Ostrea (Ostrea) atwoodii
"Ostrea atwoodi" = Ostrea (Ostrea) atwoodii Gabb 1866 oyster | |
"Lucinisca "n. sp.? aff. nuttalli"" = Lucina (Lucinisca)
"Lucinisca "n. sp.? aff. nuttalli"" = Lucina (Lucinisca) Dall 1901 clam | |
"Protothaca sp." = Leukoma
"Protothaca sp." = Leukoma Römer 1857 venus clam | |
Macoma sp. Leach 1819 tellin clam | |
Rhynchonellata | |
Terebratalia arnoldi Hertlein and Grant IV 1944 | |
Lingulata | |
Discinisca sp. Gray 1840 | |
Thecostraca | |
? Balanus gregarius barnacle |