UCMP 3148, Stewartville: Ypresian, California
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Anthozoa
- Scleractinia
- Caryophylliidae
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Trochocyathus imperialis
Nomland 1916
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U category | |||||||||
| [entered as Trochocyathus imperalis] | ||||||||||
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Echinoidea
- Spatangoida
- Schizasteridae
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Schizaster diabloensis
Kew 1920
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U category | |||||||||
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Gastropoda
- Naticidae
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Polinices (Euspira) nuciformis
(Gabb 1864)
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U category | |||||||||
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Bivalvia
- Nuculanida
- Nuculanidae
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Leda gabbi
(Conrad 1866)
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U category | |||||||||
| misspelling Nuculana gabbii | ||||||||||
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Bivalvia
- Thraciida
- Periplomatidae
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Periploma stewartvillensis n. sp.
Clark and Woodford 1927
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U category | |||||||||
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Bivalvia
- Pholadida
- Teredinidae
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Teredo sp.
Linnaeus 1758
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U category | |||||||||
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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 | ||||||||||
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Spisula tejonensis
Packard 1916
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U category | |||||||||
| recombined as Mactromeris tejonensis | ||||||||||
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Bivalvia
- Cardiida
- Cardiidae
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Cardium (Protocardium) marysvillensis
(Dickerson 1916)
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U category | |||||||||
| synonym of Nemocardium (Nemocardium) linteum | ||||||||||
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Scaphopoda
- Dentaliida
- Dentaliidae
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Dentalium cooperi
(Gabb 1864)
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U category | |||||||||
| 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, 104.7° 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 | ||||
| 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 | |||||
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: | 52419 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy |
| Modifier: | M. Clapham | Research group: | marine invertebrate |
| Created: | 2005-08-05 08:30:05 | Last modified: | 2017-04-18 13:36:08 |
| Access level: | the public | Released: | 2005-08-05 08:30:05 |
| 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] |