USGS Cenozoic M980 Pancho Rico Creek (Miocene of the United States)

Also known as UCMP IP6657, USGS Cenozoic M1929

Where: Monterey County, California (36.0° N, 120.9° W: paleocoordinates 35.3° N, 116.5° 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

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 194803: authorized by Patricia Holroyd, entered by Susan Tremblay on 29.06.2018

Creative Commons license: CC BY (attribution)

Taxonomic list

Maxillopoda
 Sessilia - Balanidae
Bivalvia
 Arcida - Arcidae
"Anadara trilineata" = Anadara (Anadara) trilineata
"Anadara trilineata" = Anadara (Anadara) trilineata Conrad 1856 ark
 Pectinida - Pectinoidae
 Ostreida - Ostreidae
"Ostrea atwoodi" = Ostrea (Ostrea) atwoodii
"Ostrea atwoodi" = Ostrea (Ostrea) atwoodii Gabb 1866 oyster
 Pholadida - Myidae
"Mya cf. arenaria" = Mya (Arenomya) arenaria Linnaeus 1758 softshell clam
Cryptomya californica Conrad 1837 softshell clam
Occurrence in collection numbered M1966 from same locality.
 Pholadida - Pholadidae
Zirfaea pilsbryi Lowe 1931 clam
Occurrence in collection numbered M1966 from same locality.
 Cardiida - Mactridae
"Spisula mercedensis" = Mactromeris mercedensis, "Tresus nuttalli" = Tresus nuttallii
"Spisula mercedensis" = Mactromeris mercedensis Packard 1916 clam
"Tresus nuttalli" = Tresus nuttallii Conrad 1837 clam
 Cardiida - Veneridae
"Protothaca cf. lacinata" = Leukoma, "Protothaca tenerrima" = Callithaca tenerrima, "? Transenella tantilla" = Nutricola tantilla
"Protothaca cf. lacinata" = Leukoma venus clam
subsp. hannibali
"Protothaca tenerrima" = Callithaca tenerrima Carpenter 1857 venus clam
"? Transenella tantilla" = Nutricola tantilla Gould 1853 venus clam
 Cardiida - Tellinidae
"Florimetis biangulata" = Psammotreta (Leporimetis) obesa Deshayes 1855 tellin clam
Macoma nasuta Conrad 1837 tellin clam
 Hiatellida - Hiatellidae
"Panope abrupta" = Panopea abrupta
"Panope abrupta" = Panopea abrupta Conrad 1849 clam
 Solenida - Solenidae
"Solen perrini" = Solena (Eosolen) perrini
"Solen perrini" = Solena (Eosolen) perrini Clark 1915 clam
 Lucinida - Lucinidae
Here excavata Carpenter 1857 clam
Occurrence in collection numbered M1966 from same locality.
Gastropoda
  - Siphonaliidae
Calicantharus kettlemanensis snail
two forms; occurrence in collection numbered M1966 from same locality.
Calicantharus cf. fortis Carpenter 1866 snail
two forms; occurrence in collection numbered M1966 from same locality.
 Cerithiacea - Cerithiidae
Bittium sp. Gray 1847 cerith snail
Bittium casmaliense cerith snail
 Neogastropoda - Columbellidae
? Mitrella gausapata Gould 1850 snail
 Neogastropoda - Turridae
 Neogastropoda - Cancellariidae
Cancellaria cf. fernandoensis Arnold 1907 snail
Occurrence in collection numbered M1966 from same locality.
 Neogastropoda - Muricidae
Forreria belcheri murex snail
Occurrence in collection numbered M1966 from same locality.
 Neogastropoda - Drilliidae
Clavus coalingensis Arnold 1910 snail
? Elaeocyma empyrosia Dall 1899 snail
 Mesogastropoda - Naticidae
"Neverita recluziana" = Glossaulax reclusiana
"Neverita recluziana" = Glossaulax reclusiana Deshayes 1841 moon snail
 Calyptraeoidea - Calyptraeidae
Crucibulum "n. sp. ?" Schumacher 1817 slipper shell
Occurrence in collection numbered M1966 from same locality.
Calyptraea sp. Lamarck 1799 slipper shell
Occurrence in collection numbered M1966 from same locality.
Crepidula sp. Lamarck 1799 slipper shell
Crepidula nummaria Gould 1846 slipper shell
Occurrence in collection numbered M1966 from same locality.
Crepidula cf. onyx Sowerby 1824 slipper shell
Occurrence in collection numbered M1966 from same locality.
 Sorbeoconcha - Turritellidae
Turritella "n. sp.?" Lamarck 1799 turret shell
Occurrence in collection numbered M1966 from same locality.
Turritella cooperi Carpenter 1864 turret shell
Occurrence in collection numbered M1966 from same locality.
 Trochoidea - Trochidae
Calliostoma sp. Swainson 1840 top snail
Occurrence in collection numbered M1966 from same locality.
Echinoidea
 Clypeasteroida - Echinarachniidae
Astrodapsis arnoldi Clark and Twitchell 1915 sand dollar
Occurrence in collection numbered M1966 from same locality.