USGS# M4630 - Tejon Fm, Kern County: Bartonian, California
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Anthozoa
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Anthozoa indet.
Ehrenberg 1834
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Gastropoda
- Lepetellida
- Fissurellidae
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Fissurella aff. behri
Dickerson 1914
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Gastropoda
- Neotaenioglossa
- Calyptraeidae
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Calyptraea cf. diegoana
(Conrad 1855)
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Gastropoda
- Neogastropoda
- Olividae
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? Olivella sp.
Swainson 1831
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Gastropoda
- Neogastropoda
- Conidae
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Conus cf. remondii
Gabb 1864
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[entered as Conus remondi] | ||||||||||
Gastropoda
- Neogastropoda
- Muricidae
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Pseudoperissolax blakei
(Conrad 1855)
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Gastropoda
- Naticidae
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? Naticidae indet.
Guilding 1834
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Amauropsis alveata
(Conrad 1855)
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replaced by Amaurellina moragai | ||||||||||
Bivalvia
- Arcida
- Arcidae
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Halonanus horni
(Gabb 1864)
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recombined as Pachecoa hornii | ||||||||||
Bivalvia
- Pectinida
- Limidae
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Lima sp.
Bruguière 1797
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Bivalvia
- Pectinida
- Spondylidae
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Spondylus carlosensis
Anderson 1905
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Bivalvia
- Ostreida
- Ostreidae
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? Ostrea sp.
Linnaeus 1758
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Bivalvia
- Mytilida
- Mytilidae
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Brachiodontes ornatus
(Gabb 1864)
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synonym of Brachidontes (Brachidontes) cowlitzensis | ||||||||||
[entered as Brachydontes ornatus] | ||||||||||
Bivalvia
- Pholadida
- Corbulidae
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Corbula sp.
Bruguière 1789
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Bivalvia
- Cardiida
- Veneridae
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Macrocallista sp.
Meek 1876
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Bivalvia
- Cardiida
- Mactridae
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Spisula cf. acutirostrata
Packard 1916
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recombined as Mactromeris acutirostrata | ||||||||||
Bivalvia
- Cardiida
- Cardiidae
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Schedocardia breweri
(Gabb 1864)
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recombined as Schedocardia brewerii | ||||||||||
Bivalvia
- Cardiida
- Tellinidae
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Tellina sp.
Linnaeus 1758
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Bivalvia
- Cardiida
- Psammobiidae
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Gari cf. diegoensis
(Hanna 1927)
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Gari hornii
(Gabb 1864)
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recombined as Gari (Gobraeus) hornii | ||||||||||
Bivalvia
- Carditida
- Carditidae
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Venericardia sp.
Lamarck 1801
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Bivalvia
- Carditida
- Crassatellidae
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Crassatella sp.
Lamarck 1799
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Lingulata
- Discinida
- Disciniidae
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Discinisca sp.
Gray 1840
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see common names |
Geography
Country: | United States | State/province: | California | County: | Kern |
Coordinates: | 34.9° North, 118.8° West (view map) | ||||
Paleocoordinates: | 34.5° North, 106.9° West | ||||
Basis of coordinate: | based on nearby landmark | ||||
Geographic resolution: | outcrop |
Time
Period: | Paleogene | Epoch: | Eocene |
Stage: | Bartonian | 10 m.y. bin: | Cenozoic 3 |
Key time interval: | Bartonian | ||
Age range of interval: | 41.30000 - 38.00000 m.y. ago |
Stratigraphy
Formation: | Tejon | ||||
Local section: | Edmonston Pumping Plant | ||||
Regional section: | Kern County | ||||
Stratigraphic resolution: | bed | ||||
Stratigraphy comments: From upper Tejon Formation, and most likely from "Tejon" stage, or possibly the "Transition" stage. Therefore a upper Middle Eocene=Narizian=Bartonian age is assigned to the collection, although it is possibly as old as Lutetian. The Tejon Formation unconformably overlies basement, and is unconformably overlain by the Tecuya Formation (Oligocene) in this section. It is not specified which of three members this collection is from. |
Lithology and environment
Primary lithology: | lithified sandstone |
Includes fossils? | Y |
Lithology description: While this collection is not specifically placed in measured section, all other collections are derived from marine sandstones. Appears to be mostly lithified from photos in publication. No detailed lithology or lithification comments mentioned in text. | |
Environment: | coastal indet. |
Glacial or sequence phase: | transgressive |
Geology comments: Collections from this section are generally typical of sandy level bottom communities, and somewhat greater depths than the inner sublittoral zone (low tide to around 90 m). |
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: | USGS |
Collection method comments: Collected by T.H. Nilson and W.O. Addicott. Collections likely to be reposited at USGS Menlo Park or USNM (not specified). | |
Taxonomic list comments:Identified by W.O. Addicott. |
Metadata
Database number: | 52803 | ||
Authorizer: | A. Hendy | Enterer: | A. Hendy |
Modifier: | A. Hendy | Research group: | marine invertebrate |
Created: | 2005-08-21 15:23:31 | Last modified: | 2013-11-25 13:37:23 |
Access level: | the public | Released: | 2005-08-21 15:23:31 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
14208. | T. H. Nilsen. 1987. Stratigraphy and sedimentology of the Eocene Tejon Formation, western Tehachapi and San Emigdio mountains, California. United States Geological Survey Professional Paper 1268:1-110 [A. Miller/A. Hendy/R. McClees-Funinan] |
Secondary references:
17633 | P. Jung. 1969. A Pliocene molluscan faunule from Trinidad. Bulletins of American Paleontology 7:85-89 [A. Miller/A. Hendy] |