UCMP loc. 3159, Deer Valley: Ypresian, California
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Scaphopoda
- Dentaliida
- Dentaliidae
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Dentalium cooperi
(Gabb 1864)
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U category | |||||||||
Gastropoda
- Turritellidae
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Turritella meganosensis n. sp.
Clark and Woodford 1927
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U category | |||||||||
Turritella merriami
Dickerson 1913
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U category | |||||||||
Gastropoda
- Naticidae
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Polinices (Euspira) nuciformis
(Gabb 1864)
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U category | |||||||||
Polinices (Euspira) gesteri
(Dickerson 1916)
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U category | |||||||||
Polinices (Euspira) hornii
(Gabb 1864)
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C category | |||||||||
recombined as Polinices hornii | ||||||||||
Gastropoda
- Neogastropoda
- Cancellariidae
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Admete (Bonellitia) cf. stantoni
(Dickerson 1913)
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U category | |||||||||
synonym of Bonellitia (Admetula) paucivaricata | ||||||||||
Gastropoda
- Neogastropoda
- Fasciolariidae
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Bulbifusus californicus
Clark and Woodford 1927
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U category | |||||||||
Gastropoda
- Neogastropoda
- Buccinidae
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Siphonalia cf. sutterensis
Dickerson 1913
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U category | |||||||||
recombined as Siphonalia (Nassicola) sutterensis | ||||||||||
? Parvisipho meganosensis n. sp.
Clark and Woodford 1927
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U category | |||||||||
Brachysphingus mammilatus
Clark and Woodford 1927
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A category | |||||||||
Gastropoda
- Neogastropoda
- Nassariidae
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Molopophorus californicus n. sp.
Clark and Woodford 1927
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U category | |||||||||
Gastropoda
- Neogastropoda
- Clavatulidae
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? Turricula cooperi
(Dickerson 1916)
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U category | |||||||||
Gastropoda
- Neogastropoda
- Turridae
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Gemmula wattsi
Anderson and Hanna 1925
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U category | |||||||||
Gastropoda
- Neogastropoda
- Drilliidae
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Drillia hartleyensis n. sp.
Clark and Woodford 1927
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C category | |||||||||
Gastropoda
- Heterostropha
- Acteonidae
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Acteon sp.
Montfort 1810
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U category | |||||||||
Gastropoda
- Solariellidae
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Solariella hartleyensis n. sp.
Clark and Woodford 1927
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U category | |||||||||
Gastropoda
- Opisthobranchia
- Cylichnidae
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Scaphander cf. costatus
(Gabb 1864)
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C category | |||||||||
recombined as Scaphander (Mirascapha) costatus | ||||||||||
Bivalvia
- Nuculida
- Nuculidae
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Nucula (Acila) gabbiana
Dickerson 1916
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U category | |||||||||
Bivalvia
- Solenida
- Solenidae
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Solen (Plectosolen) stantoni
Weaver 1905
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U category | |||||||||
= Solena (Eosolen) subverticala
Vokes 1939
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Moore 2003 | |||||||||
Solen cf. parallelus
Gabb 1864
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U category | |||||||||
recombined as Solena (Plectosolen) parallelus | ||||||||||
Bivalvia
- Pholadida
- Pholadidae
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Martesia meganosensis n. sp.
Clark and Woodford 1927
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U category | |||||||||
Bivalvia
- Cardiida
- Ungulinidae
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Diplodonta cretacea
Gabb 1864
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A category | |||||||||
recombined as Diplodonta (Diplodonta) cretacea | ||||||||||
Bivalvia
- Cardiida
- Veneridae
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Dosiniopsis stewartvillensis n. sp.
Clark and Woodford 1927
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U category | |||||||||
Pitar uvasana
(Conrad 1855)
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U category | |||||||||
Subspecies: Pitaria uvasana marshallensis | ||||||||||
Macrocallista meganosensis n. sp.
Clark and Woodford 1927
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C category | |||||||||
recombined as Microcallista (Costacallista) conradiana meganosensis | ||||||||||
Pitaria californica
(Clark 1918)
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A category | |||||||||
Subspecies: Pitaria californica stewartvillensis | ||||||||||
Pitaria conradi
Dickerson 1916
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U category | |||||||||
Bivalvia
- Cardiida
- Mactridae
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Spisula meganosensis n. sp.
Clark and Woodford 1927
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U category | |||||||||
recombined as Pseudocardium meganosensis | ||||||||||
Bivalvia
- Cardiida
- Psammobiidae
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Psammobia sp.
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U category | |||||||||
= Gari (Gobraeus) sp.
Brown 1844
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Moore 2003 | |||||||||
Bivalvia
- Cardiida
- Tellinidae
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Tellina longa
Gabb 1864
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U category | |||||||||
recombined as Tellina (Angulus) longa | ||||||||||
Tellina joaquinensis
Arnold 1909
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U category | |||||||||
recombined as Tellina (Angulus) joaquinensis | ||||||||||
Bivalvia
- Cardiida
- Cardiidae
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Cardium (Protocardium) marysvillensis
(Dickerson 1916)
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U category | |||||||||
synonym of Nemocardium (Nemocardium) linteum | ||||||||||
Bivalvia
- Lucinida
- Lucinidae
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Phacoides meganosensis n. sp.
Clark and Woodford 1927
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C category | |||||||||
recombined as Miltha (Miltha) meganosensis | ||||||||||
Bivalvia
- Carditida
- Crassatellidae
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Crassatellites meganosensis n. sp.
Clark and Woodford 1927
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C category | |||||||||
recombined as Crassatella meganosensis | ||||||||||
Bivalvia
- Carditida
- Carditidae
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Venericardia hornii
(Gabb 1864)
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U category | |||||||||
recombined as Venericardia (Pacificor) hornii | ||||||||||
Bivalvia
- Mytilida
- Mytilidae
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Modiolus (Brachydontes) ornatus
(Gabb 1864)
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U category | |||||||||
synonym of Brachidontes (Brachidontes) cowlitzensis | ||||||||||
Bivalvia
- Arcida
- Arcidae
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Arca hornii
Gabb 1864
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U category | |||||||||
recombined as Pachecoa hornii | ||||||||||
Subspecies: Arca horniii elusa | ||||||||||
Bivalvia
- Arcida
- Glycymerididae
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Glycymeris major
(Stanton 1896)
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C category | |||||||||
recombined as Glycymerita major | ||||||||||
Subspecies: Glycymeris major meganosensis | ||||||||||
see common names |
Geography
Country: | United States | State/province: | California | County: | Contra Costa |
Coordinates: | 37.9° North, 121.8° West (view map) | ||||
Paleocoordinates: | 40.6° North, 104.6° West | ||||
Basis of coordinate: | estimated from map | ||||
Geographic resolution: | outcrop |
Time
Period: | Paleogene | Epoch: | Eocene |
Stage: | Ypresian | 10 m.y. bin: | Cenozoic 2 |
Key time interval: | Ypresian | ||
Age range of interval: | 56.00000 - 47.80000 m.y. ago |
Stratigraphy
Formation: | Meganos | Member: | Margaret Hamilton Sand | ||
Local section: | Mount Diablo | Local bed: | D | ||
Local order: | bottom to top | ||||
Stratigraphic resolution: | bed | ||||
Stratigraphy comments: "Meganos" faunas represent upper Bulitian and lower Penutian local ages=Ypresian
said to be, "Margaret Hamilton Sand [=division D of Meganos Formation as used by Clark and Woodford (1927)]" by Squires 1997 |
Lithology and environment
Primary lithology: | fine,pebbly lithified calcareous sandstone |
Includes fossils? | Y |
Lithology description: Fine, micaceous sandstone, commonly with small pebbles, thinly beeded near bottom, more massive at top, yellow-brown to gray in color. The massive sandstones near top contain lenses of harded calcareous and fossiliferous sandstones. | |
Environment: | coastal indet. |
Geology comments: Shallow marine coastal siliciclastic environment |
Taphonomy
Modes of preservation: | body |
Size of fossils: | macrofossils |
Collection methods and comments
Collection methods: | selective quarrying,field collection |
Reason for describing collection: | biostratigraphic analysis |
Museum repositories: | UCMP |
Collection method comments: Collected by Clark and Woodford. Collections reposited at UCMP. | |
Taxonomic list comments:Identified by Clark and Stewart. |
Metadata
Database number: | 52426 | ||
Authorizer: | A. Hendy | Enterer: | A. Hendy |
Modifier: | J. Marcot | Research group: | marine invertebrate |
Created: | 2005-08-05 08:33:25 | Last modified: | 2020-10-09 12:51:11 |
Access level: | the public | Released: | 2005-08-05 08:33:25 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
14099. | B. L. Clark and A. O. Woodford. 1927. The geology and paleontology of the type section of the Meganos Formation (lower Middle Eocene) of California. University of California Publications in Geological Sciences 17(2):63-142 [A. Miller/A. Hendy/P. Wagner] |
Secondary references:
32797 | E. J. Moore. 2003. Tertiary marine pelecypods of California and Baja California: Crassatellidae through Pharidae. United States Geological Survey Professional Paper 1228(F):1-107 [A. Hendy/A. Hendy/J. Marcot] | |
24521 | E. J. Moore. 2003. Tertiary marine pelecypods of California and Baja California, Chapter G: Tellinidae, Donacidae, Psammobiliidae, Semelidae:. 1-55 [A. Hendy/A. Hendy/J. Marcot] |