OCPC Loc. 2604, Fletcher Jones site (Pleistocene of the United States)

Where: Orange County, California (33.6° N, 117.9° W: paleocoordinates 33.6° N, 117.9° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Late/Upper Pleistocene (0.1 - 0.0 Ma)

• STRATIGRAPHIC RELATIONS: From unnamed terrace deposits that overly the Niguel Fm (Late Pleistocene) AGE: Late Pleistocene, on the basis of geochemical dating. Uranium series dating (Grant et al., 1999) of a solitary coral from a nearby correlated locality gave an age of 122,000, giving the Fletcher Jones site an approximate age range of 120-125 Ka. STRATIGRAPHIC POSITION: From terrace deposits 2-2.5 m above an unconformity with the Niguel Fm.

• bed-level stratigraphic resolution

Environment/lithology: coastal; unlithified sandstone and poorly lithified, silty mudstone

• ENVIRONMENT: Mixed thanatocoenosis, incl. representatives from protected bay, sandy-bottom and rocky-bottom, protected to open coasts, and offshore environments.
• SPECIFIC LITHOLOGY: Grades from a silty mudstone to a cross-bedded moderately well-sorted, unconsolidated sand. LITHIFICATION: Unlithified, on the basis of facies description and sample preparation.

Size classes: macrofossils, mesofossils

Collection methods: bulk, sieve,

• COLLECTOR; Powell et al. REPOSITORY: Orange Co. Paleontology Collections.

Primary reference: C. L. Powell II, L. B. Grant, and S. W. Conkling. 2005. Paleoecologic analysis and age of a late Pleistocene fossil assemblage from Upper Newport Bay, Newport Beach, Orange County, California. The Veliger 47(3):183-192 [A. Hendy/A. Hendy]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 96937: authorized by Austin Hendy, entered by Austin Hendy on 13.07.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for molluscs, other invertebrate taxa also included. NOMENCLATURE: Not an authoritative publication, but with modern nomenclature, and species-resolution identifications.
unclassified
  -
Gastropoda
 Trochoidea - Trochidae
"Tegula gallina" = Chlorostoma gallina Forbes 1850 top snail
"Tegula aureotincta" = Chlorostoma aureotincta Forbes 1852 top snail
Calliostoma tricolor Gabb 1865 top snail
Calliostoma gemmulatum Carpenter 1864 top snail
 Trochoidea - Tegulidae
"Tegula eiseni" = Agathistoma eiseni
"Tegula eiseni" = Agathistoma eiseni Jordan 1936 snail
 Lepetellida - Fissurellidae
Diodora arnoldi McLean 1966 snail
Fissurella volcano Reeve 1849 snail
 Epitonioidea - Epitoniidae
Epitonium sp. Bolten 1798 wentletrap
 Neotaenioglossa - Calyptraeidae
Crepidula onyx Sowerby 1824 slipper shell
Crucibulum spinosum Conrad 1855 slipper shell
 Cerithioidea - Potamididae
"Cerithidea californica" = Cerithideopsis californica
"Cerithidea californica" = Cerithideopsis californica Haldeman 1840 horn snail
 Neogastropoda - Olividae
"Olivella biplicata" = Callianax biplicata, "Olivella baetica" = Callianax baetica
"Olivella biplicata" = Callianax biplicata Sowerby 1825 olive snail
"Olivella baetica" = Callianax baetica Carpenter 1864 olive snail
 Neogastropoda - Nassariidae
"Nassarius perpinguis" = Caesia perpinguis, "Nassarius tegula" = Phrontis tegula
"Nassarius perpinguis" = Caesia perpinguis Hinds 1844 snail
"Nassarius tegula" = Phrontis tegula Reeve 1853 snail
 Neogastropoda - Columbellidae
Alia carinata Hinds 1844 dovesnail
 Neogastropoda - Conidae
"Conus californicus" = Californiconus californicus
"Conus californicus" = Californiconus californicus Reeve 1844 cone shell
 Neogastropoda - Terebridae
"Terebra danai" = Neoterebra danai
"Terebra danai" = Neoterebra danai Berry 1958 auger snail
 Neogastropoda - Turridae
Ophiodermella cf. inermis Reeve 1843 turrid
 Neogastropoda - Muricidae
"Stramonita biserialis" = Thais biserialis de Blainville 1832 murex snail
Eupleura muriciformis Broderip 1833 murex snail
Forreria belcheri Hinds 1843 murex snail
Pteropurpura festiva Hinds 1844 murex snail
 Sorbeoconcha - Bursidae
"Crossata californica" = Crossata ventricosa
"Crossata californica" = Crossata ventricosa Broderip 1833 frog shell
 Sorbeoconcha - Naticidae
"Neverita reclusianus" = Glossaulax reclusiana, Sinum scopulosum
"Neverita reclusianus" = Glossaulax reclusiana Deshayes 1839 moon snail
Sinum scopulosum Conrad 1849 moon snail
 Heterostropha - Ellobiidae
Melampus olivaceus Carpenter 1857 snail
 Opisthobranchia - Bullidae
Bulla gouldiana Pilsbry 1895 snail
Bivalvia
 Arcida - Arcidae
Anadara perlabiata Grant, IV and Gale 1931 ark
 Pectinida - Anomiidae
Anomia peruviana d'Orbigny 1846 jingle
 Pectinida - Pectinoidae
Argopecten ventricosus Sowerby 1842 calico scallop
Leptopecten latiauratus Conrad 1837 scallop
 Ostreida - Ostreidae
Ostrea conchaphila Carpenter 1857 oyster
 Mytilida - Mytilidae
Septifer bifurcatus Conrad 1837 mussel
Mytilus sp. Linnaeus 1758 mussel
 Lucinida - Lucinidae
Lucinisca nuttalli Conrad 1837 clam
Epilucina californica Conrad 1837 clam
 Pholadida - Myidae
Cryptomya californica Conrad 1837 softshell clam
 Pholadida - Corbulidae
"Juliacorbula luteola" = Caryocorbula luteola
"Juliacorbula luteola" = Caryocorbula luteola Carpenter 1864 clam
 Cardiida - Chamidae
"Pseudochama exogyra" = Chama exogyra
"Pseudochama exogyra" = Chama exogyra Conrad 1837 jewel box
 Cardiida - Veneridae
Veneridae indet. Rafinesque 1815 venus clam
"Pitar newcombianus" = Pitar (Pitar) newcombianus Gabb 1865 venus clam
Petricolaria cognata Adams 1852 venus clam
Megapitaria squalida Sowerby 1833 venus clam
"Chione fluctifraga" = Chionista fluctifraga Sowerby 1853 venus clam
Chione californiensis Broderip and Sowerby I 1835 venus clam
 Cardiida - Ungulinidae
"Diplodonta sericata" = Diplodonta (Felaniella) sericata
"Diplodonta sericata" = Diplodonta (Felaniella) sericata Reeve 1850 clam
 Cardiida - Mactridae
Mactridae indet. Lamarck 1809 clam
 Cardiida - Cardiidae
"Trachycardium cf. panamense" = Mexicardia procera
"Trachycardium cf. panamense" = Mexicardia procera Sowerby 1833 cockle
 Cardiida - Solecurtidae
Tagelus sp. Gray 1847 clam
 Cardiida - Donacidae
"Donax californicus" = Donax (Paradonax) californicus, "Donax gouldi" = Donax (Donax) gouldii
"Donax californicus" = Donax (Paradonax) californicus Conrad 1837 clam
"Donax gouldi" = Donax (Donax) gouldii Dall 1921 clam
 Cardiida - Tellinidae
"Tellina meropsis" = Tampaella meropsis, Macoma sp., Macoma nasuta, "Macoma carlottensis" = Psammacoma carlottensis
"Tellina meropsis" = Tampaella meropsis Dall 1900 tellin clam
Macoma sp. Leach 1819 tellin clam
Macoma nasuta Conrad 1837 tellin clam
"Macoma carlottensis" = Psammacoma carlottensis Whiteaves 1880 tellin clam
 Carditida - Carditidae
"Cyclocardia ventricosa" = Coanicardita ventricosa
"Cyclocardia ventricosa" = Coanicardita ventricosa Gould 1850 clam
 Carditida - Crassatellidae
Crassinella nuculiformis Berry 1940 clam
Scaphopoda
 Dentaliida - Dentaliidae
Dentalium neohexagonum Sharp and Pilsbry 1897 tusk shell
Malacostraca
 Decapoda -
Decapoda indet. Latreille 1802 decapod
Thecostraca
 Balanomorpha - Balanidae
? Balanus sp. Da Costa 1778 barnacle
Echinoidea
  -
Echinoidea indet. Leske 1778 sea urchin
 Clypeasteroida - Dendrasteridae
Dendraster excentricus Eschscholz 1826 sand dollar