OCPC Loc. 2605, Fletcher Jones site: Late/Upper Pleistocene, California
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Thecostraca
- Balanomorpha
- Balanidae
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? Balanus sp.
Da Costa 1778
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6 specimens | |||||||||
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Gastropoda
- Heterostropha
- Ellobiidae
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Melampus olivaceus
Carpenter 1857
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2 specimens | |||||||||
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Gastropoda
- Potamididae
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Cerithidea californica
(Haldeman 1840)
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3 specimens | |||||||||
| recombined as Cerithideopsis californica | ||||||||||
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Gastropoda
- Neotaenioglossa
- Calyptraeidae
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Crucibulum spinosum
Conrad 1855
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3 specimens | |||||||||
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Gastropoda
- Neogastropoda
- Muricidae
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Stramonita biserialis
(de Blainville 1832)
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| recombined as Thais biserialis | ||||||||||
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Gastropoda
- Neogastropoda
- Olividae
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Olivella baetica
Carpenter 1864
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2 specimens | |||||||||
| recombined as Callianax baetica | ||||||||||
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Gastropoda
- Neogastropoda
- Nassariidae
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Nassarius tegula
(Reeve 1853)
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4 specimens | |||||||||
| recombined as Phrontis tegula | ||||||||||
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Gastropoda
- Naticidae
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Neverita reclusianus
(Deshayes 1839)
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2 specimens | |||||||||
| recombined as Glossaulax reclusiana | ||||||||||
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Gastropoda
- Trochidae
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Tegula gallina
(Forbes 1850)
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| recombined as Chlorostoma gallina | ||||||||||
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Calliostoma gemmulatum
Carpenter 1864
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Bivalvia
- Ostreida
- Ostreidae
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Ostrea conchaphila
Carpenter 1857
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15 specimens | |||||||||
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Bivalvia
- Pectinida
- Anomiidae
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Anomia peruviana
d'Orbigny 1846
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5 specimens | |||||||||
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Bivalvia
- Pectinida
- Pectinidae
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Argopecten ventricosus
(Sowerby 1842)
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4 specimens | |||||||||
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Bivalvia
- Lucinida
- Lucinidae
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Epilucina californica
(Conrad 1837)
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1 specimen | |||||||||
| original and current combination Phacoides californicus | ||||||||||
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Lucinisca nuttalli
(Conrad 1837)
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3 specimens | |||||||||
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Bivalvia
- Pholadida
- Corbulidae
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Juliacorbula luteola
(Carpenter 1864)
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2 specimens | |||||||||
| recombined as Caryocorbula luteola | ||||||||||
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Bivalvia
- Cardiida
- Mactridae
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Mactromeris hemphilli
(Dall 1894)
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| recombined as Mactromeris hemphillii | ||||||||||
| Spelt Mactromeris hemphill | ||||||||||
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Bivalvia
- Cardiida
- Veneridae
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Petricolaria cf. cognata
(Adams 1852)
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Chione cf. fluctifraga
(Sowerby 1853)
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1 specimen | |||||||||
| recombined as Chionista fluctifraga | ||||||||||
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Chione cf. undatella
(Sowerby I 1835)
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4 specimens | |||||||||
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Chione gnidia
(Broderip and Sowerby I 1829)
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1 specimen | |||||||||
| recombined as Chionopsis gnidia | ||||||||||
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Bivalvia
- Cardiida
- Chamidae
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Chama arcana
Bernard 1976
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2 specimens | |||||||||
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Bivalvia
- Cardiida
- Cardiidae
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Trachycardium cf. panamense
(Sowerby I 1833)
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3 specimens | |||||||||
| synonym of Mexicardia procera | ||||||||||
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Bivalvia
- Cardiida
- Donacidae
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Donax californicus
Conrad 1837
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4 specimens | |||||||||
| recombined as Donax (Paradonax) californicus | ||||||||||
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Donax gouldi
(Dall 1921)
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5 specimens | |||||||||
| recombined as Donax (Donax) gouldii | ||||||||||
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Bivalvia
- Carditida
- Crassatellidae
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Crassinella pacifica
(Adams 1852)
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2 specimens | |||||||||
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Echinoidea
- Clypeasteroida
- Dendrasteridae
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Dendraster excentricus
(Eschscholz 1826)
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7 specimens | |||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | California | County: | Orange |
| Coordinates: | 33.6° North, 117.9° West (view map) | ||||
| Paleocoordinates: | 33.6° North, 117.9° West | ||||
| Basis of coordinate: | estimated from map | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Quaternary | Epoch: | Pleistocene |
| Stage: | Late/Upper Pleistocene | 10 m.y. bin: | Cenozoic 6 |
| Key time interval: | Late/Upper Pleistocene | ||
| Age range of interval: | 0.12900 - 0.01170 m.y. ago | ||
| Age estimate: | 122 Ka (U/Pb) |
Stratigraphy
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: 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. | |||||
Lithology and environment
| Primary lithology: | "cross stratification" unlithified sandstone |
| Secondary lithology: | poorly lithified silty mudstone |
| Includes fossils? | Y |
| Includes fossils? | Y |
| Lithology description: 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. | |
| Environment: | coastal indet. |
| Geology comments: ENVIRONMENT: Mixed thanatocoenosis, incl. representatives from protected bay, sandy-bottom and rocky-bottom, protected to open coasts, and offshore environments. | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils,mesofossils |
Collection methods and comments
| Collection methods: | bulk,sieve,field collection |
| Reason for describing collection: | paleoecologic analysis |
| Collection method comments: COLLECTOR; Powell et al. REPOSITORY: Orange Co. Paleontology Collections. | |
| Taxonomic list comments:COVERAGE: Exhaustive for molluscs, other invertebrate taxa also included. NOMENCLATURE: Not an authoritative publication, but with modern nomenclature, and species-resolution identifications. | |
Metadata
| Database number: | 96938 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy | Research group: | marine invertebrate |
| Created: | 2010-07-13 08:06:02 | Last modified: | 2013-11-25 13:37:23 |
| Access level: | the public | Released: | 2010-07-13 08:06:02 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 33094. | 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] |