USGS Mesozoic M8600, Bolsa Point (Cretaceous of the United States)

Also known as 89-E-42 float

Where: San Mateo County, California (37.2° N, 122.4° W: paleocoordinates 43.5° N, 92.1° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Pigeon Point Formation, Middle Campanian (83.5 - 70.6 Ma)

• bed-level stratigraphic resolution

Environment/lithology: transition zone or lower shoreface; lithified sandstone

• Presence of hummocky cross-stratification suggests offshore-transition/lower shoreface environment

Size class: macrofossils

Preservation: mold/impression

Collected by W.P. Elder in 1989; reposited in the USNM

Primary reference: W. P. Elder and L. R. Saul. 1993. Paleogeographic implications of molluscan assemblages in the Upper Cretaceous (Campanian) Pigeon Point Formation, California. In G. Dunn, K. McDougall (eds.), Mesozoic Paleogeography of the Western United States - II. Pacific Section SEPM Book 71:171-186 [M. Clapham/M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 144764: authorized by Matthew Clapham, entered by Matthew Clapham on 17.05.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Stenolaemata
 Cyclostomata -
Cyclostomata indet.
Cephalopoda
 Ammonitida - Nostoceratidae
? Didymoceras sp.
? Didymoceras sp. Hyatt 1900 ammonite
 Ammonitida - Baculitidae
Baculites rex
Baculites rex Anderson 1958 ammonite
Scaphopoda
 Dentaliida - Dentaliidae
? Dentalium sp.
? Dentalium sp. Linnaeus 1758 tusk shell
Gastropoda
 Heterostropha - Acteonidae
Nonacteonina obesa
Nonacteonina obesa Dailey and Popenoe 1966 snail
 Heterostropha - Ringiculidae
Biplica obliqua
Biplica obliqua Gabb 1864 snail
 Sorbeoconcha - Naticidae
"Gyrodes canadensis" = Gyrodes (Sohlella) canadensis, Gyrodes (Sohlella) cf. pacificus, Euspira sp.
"Gyrodes canadensis" = Gyrodes (Sohlella) canadensis Whiteaves 1903 moon snail
Gyrodes (Sohlella) cf. pacificus Popenoe et al. 1987 moon snail
Euspira sp. Agassiz 1837 moon snail
 Sorbeoconcha - Capulidae
Lysis sp.
Lysis sp. Gabb 1864 snail
 Neogastropoda - Melongenidae
""Fulgur" hilgardi" = Pentzia hilgardi
""Fulgur" hilgardi" = Pentzia hilgardi White 1889 snail
 Neogastropoda - Perissityidae
Perissitys cf. pacifica
Perissitys cf. pacifica Popenoe and Saul 1987 snail
 Neogastropoda - Volutidae
"Volutoderma averilli" = Volutoderma averillii
"Volutoderma averilli" = Volutoderma averillii Gabb 1864 volute
 Sorbeoconcha - Aporrhaidae
"Lispodesthes rotundus" = Lispodesthes rotundatus
"Lispodesthes rotundus" = Lispodesthes rotundatus Waring 1917 snail
Bivalvia
 Nuculanida - Nuculanidae
Nuculana (Nuculana) aff. grandensis, "Nuculana (? Jupiteria) sp." = Jupiteria
"Nuculana (? Jupiteria) sp." = Jupiteria Bellardi 1875 pointed nut clam
 Mytilida - Mytilidae
Mytilus sp.
Mytilus sp. Linnaeus 1758 mussel
 Myalinida - Inoceramidae
Inoceramidae indet.
Inoceramidae indet. Giebel 1852 clam
 Pectinida - Anomiidae
Anomia sp.
Anomia sp. Linnaeus 1758 jingle
 Ostreida - Malleidae
Isognomon "n. sp."
Isognomon "n. sp." Lightfoot 1786 oyster
 Ostreida - Pinnidae
Pinna sp.
Pinna sp. Linnaeus 1758 oyster
 Arcida - Arcidae
Trinacria aff. cor
Trinacria aff. cor Popenoe 1937 clam
 Arcida - Glycymerididae
Glycymeris (Glycymeris) anae
 Cardiida - Donacidae
? Notodonax sp.
? Notodonax sp. Feruglio 1935 clam
 Cardiida - Tellinidae
? Quadrans (? Phyllodina) sp., Tellina "n. sp. A"
? Quadrans (? Phyllodina) sp. Bertin 1878 tellin clam
Tellina "n. sp. A" Linnaeus 1758 tellin clam
 Cardiida - Tancrediidae
Meekia (Mygallia) daileyi, Meekia (Mygallia) bella
Meekia (Mygallia) daileyi Saul and Popenoe 1962 clam
Meekia (Mygallia) bella Saul and Popenoe 1962 clam
 Cardiida -
? Aphaea sp.
 Cardiida - Veneridae
"Calva bowersiana" = Calva (Egelicalva) bowersiana
"Calva bowersiana" = Calva (Egelicalva) bowersiana Cooper 1894 venus clam
 Cardiida - Mactridae
Cymbophora popenoei, Cymbophora triangulata, Cymbophora stantoni
Cymbophora popenoei Saul 1974 clam
Cymbophora triangulata Waring 1917 clam
Cymbophora stantoni Arnold 1908 clam
 Pholadida - Corbulidae
Corbula cf. torta
 Solenida - Pharidae
? Leptosolen sp.
? Leptosolen sp. Conrad 1865 clam
 Hiatellida - Hiatellidae
Panopea aff. californica
 Pholadomyida - Pholadomyidae
Pholadomya subelongata
Pholadomya subelongata Meek 1857 clam
 Thraciida - Periplomatidae
Periploma aff. subgracile
 Carditida - Crassatellidae
Crassatella saulae
Crassatella saulae Dailey and Popenoe 1966 clam
 Trigoniida - Megatrigonioidae
Pterotrigonia evansana
Pterotrigonia evansana Meek 1864 clam
Pinopsida
 Pinales - Taxodiaceae
? Margariella sp.