UCMP loc. 3577, Dry Creek: Ypresian, California
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Scaphopoda
- Dentaliida
- Dentaliidae
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Dentalium stramineum
Gabb 1864
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U category | |||||||||
Dentalium cooperi
(Gabb 1864)
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A category | |||||||||
Bivalvia
- Mytilida
- Mytilidae
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Modiolus (Brachydontes) ornatus
(Gabb 1864)
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A category | |||||||||
synonym of Brachidontes (Brachidontes) cowlitzensis | ||||||||||
Bivalvia
- Arcida
- Glycymerididae
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Glycymeris major
(Stanton 1896)
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A category | |||||||||
recombined as Glycymerita major | ||||||||||
Subspecies: Glycymeris major meganosensis | ||||||||||
Bivalvia
- Arcida
- Arcidae
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Arca hornii
Gabb 1864
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U category | |||||||||
recombined as Pachecoa hornii | ||||||||||
Subspecies: Arca hornii elusa | ||||||||||
Bivalvia
- Lucinida
- Lucinidae
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Phacoides meganosensis n. sp.
Clark and Woodford 1927
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U category | |||||||||
recombined as Miltha (Miltha) meganosensis | ||||||||||
Bivalvia
- Pholadida
- Corbulidae
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Corbula diaboli
Clark and Woodford 1927
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C category | |||||||||
Bivalvia
- Pholadida
- Pholadidae
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Martesia meganosensis n. sp.
Clark and Woodford 1927
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U category | |||||||||
Bivalvia
- Cardiida
- Cardiidae
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Cardium (Protocardiun) marysvillensis
Dickerson 1916
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U category | |||||||||
synonym of Nemocardium (Nemocardium) linteum | ||||||||||
Bivalvia
- Cardiida
- Tellinidae
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Tellina longa
Gabb 1864
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C category | |||||||||
recombined as Tellina (Angulus) longa | ||||||||||
Bivalvia
- Cardiida
- Veneridae
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Pitaria californica
(Clark 1918)
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C category | |||||||||
Subspecies: Pitaria californica stewartvillensis | ||||||||||
Pitar uvasana
(Conrad 1855)
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A category | |||||||||
Subspecies: Pitaria uvasana marshallensis | ||||||||||
Macrocallista meganosensis n. sp.
Clark and Woodford 1927
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A category | |||||||||
recombined as Microcallista (Costacallista) conradiana meganosensis | ||||||||||
Dosiniopsis stewartvillensis n. sp.
Clark and Woodford 1927
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U category | |||||||||
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
- Solenida
- Solenidae
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Solen cf. parallelus
Gabb 1864
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U category | |||||||||
recombined as Solena (Plectosolen) parallelus | ||||||||||
Bivalvia
- Nuculanida
- Sareptidae
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Yoldia mortuasusensis n. sp.
Clark and Woodford 1927
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U category | |||||||||
recombined as Portlandia (Portlandia) mortuasusensis | ||||||||||
Bivalvia
- Nuculanida
- Nuculanidae
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Leda gabbi
(Conrad 1866)
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U category | |||||||||
nomen nudum belonging to Nuculanidae | ||||||||||
Bivalvia
- Nuculida
- Nuculidae
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Nucula (Acila) gabbiana
Dickerson 1916
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U category | |||||||||
Gastropoda
- Opisthobranchia
- Cylichnidae
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Scaphander cf. costatus
(Gabb 1864)
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U category | |||||||||
recombined as Scaphander (Mirascapha) costatus | ||||||||||
Gastropoda
- Heterostropha
- Architectonicidae
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Architectonica sp.
Röding 1798
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U category | |||||||||
Gastropoda
- Heterostropha
- Acteonidae
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Acteon sp.
Montfort 1810
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U category | |||||||||
Gastropoda
- Turritellidae
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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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A category | |||||||||
Polinices (Euspira) hornii
(Gabb 1864)
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A category | |||||||||
recombined as Polinices hornii | ||||||||||
Gastropoda
- Neogastropoda
- Buccinidae
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Brachysphingus mammilatus
Clark and Woodford 1927
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A category | |||||||||
? Strepsidura diabloensis n. sp.
Clark and Woodford 1927
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U category | |||||||||
Gastropoda
- Neogastropoda
- Nassariidae
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Molopophorus californicus
Clark and Woodford 1927
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U category | |||||||||
Gastropoda
- Neogastropoda
- Fasciolariidae
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Bulbifusus californicus n. sp.
Clark and Woodford 1927
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U category | |||||||||
Gastropoda
- Neogastropoda
- Cancellariidae
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Admete (Bonellitia) cf. stantoni
(Dickerson 1913)
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C category | |||||||||
synonym of Bonellitia (Admetula) paucivaricata | ||||||||||
Gastropoda
- Neogastropoda
- Olividae
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Oliva meganosensis 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
- Drilliidae
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Drillia hartleyensis
Clark and Woodford 1927
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C category | |||||||||
Gastropoda
- Cassidae
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Galeodea sutterensis
Dickerson 1916
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U category | |||||||||
see common names |
Geography
Country: | United States | State/province: | California | County: | Contra Costa |
Coordinates: | 37.9° North, 121.7° 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)]" but 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: | 52428 | ||
Authorizer: | A. Hendy | Enterer: | A. Hendy |
Modifier: | J. Marcot | Research group: | marine invertebrate |
Created: | 2005-08-05 08:35:29 | Last modified: | 2020-10-09 12:51:57 |
Access level: | the public | Released: | 2005-08-05 08:35:29 |
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] |