CSUN Loc. 1220a [Bateque Fm]: Ypresian, Mexico
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Gastropoda
- Campanilidae
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Campanile sp.
Fischer 1884
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Bivalvia
- Pectinida
- Spondylidae
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Spondylus batequensis
Squires and Demetrion 1990
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Bivalvia
- Arcida
- Arcidae
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Barbatia (Acar) ? sp.
(Gray 1857)
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| original and current combination Acar | |||||||
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Hydrozoa
- Spongiomorphida
- Spongiomorphidae
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Spongiomorphidae ? indet.
Frech 1890
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Anthozoa
- Scleractinia
- Heterocoeniidae
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Heterocoenia ? sp.
Milne-Edwards and Haime 1848
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Anthozoa
- Scleractinia
- Montastraeidae
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Montastrea laurae n. sp.
Squires and Demetrion 1992
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Anthozoa
- Scleractinia
- Mussidae
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Colpophyllia nicholasi n. sp.
Squires and Demetrion 1992
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Anthozoa
- Scleractinia
- Stylinidae
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Stylosmilia ameliae n. sp.
Squires and Demetrion 1992
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= "Stylosmilia" ameliae
Squires and Demetrion 1992
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Kiessling 2008 | ||||||
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Calcarea
- Calcaronea
- Stellispongiidae
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Elasmostoma bajaensis
Squires and Demetrion 1989
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Florideophyceae
- Corallinales
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Archaeolithothamnium sp.
Rothpletz 1891
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Chlorophyceae
- Dasycladales
- Dasycladaceae
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Dasycladaceae indet.
Kutzing 1843
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Asterocyclinidae
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Pseudophragmina clarki
(Cushman 1920)
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| see common names | |||||||
Geography
| Country: | Mexico | State/province: | Baja California Sur |
| Coordinates: | 26.8° North, 113.0° West (view map) | ||
| Paleocoordinates: | 29.0° North, 96.4° West | ||
| Geographic resolution: | outcrop |
Time
| Period: | Paleogene | Epoch: | Eocene |
| Stage: | Ypresian | 10 m.y. bin: | Cenozoic 2 |
| *Period: | Tertiary | *Local age/stage: | Capay |
| Key time interval: | Ypresian | ||
| Age range of interval: | 56.00000 - 47.80000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Bateque | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: this collection is from section 2 of the author's four section division of the formation | |||||
Lithology and environment
| Primary lithology: | planar lamination poorly lithified sandstone |
| Secondary lithology: | lithified "reef rocks" |
| Includes fossils? | Y |
| Includes fossils? | Y |
| Lithology description: a very poorly exposed, 7 m thick interval that consists of laminated?, very fine-grained sandstone containing radially oriented or massive large growths of colonial reef corals | |
| Environment: | transition zone/lower shoreface |
| Geology comments: note on paleoenvironment...the author's suggest that the "massive large growths of colonial reef corals...grew on the top and/or sides of a shoal caused by the underlying lobe of the braid delta". However, "positive determination of whether or not the reef corals actually constructed a reef cannot be ascertained." | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | field collection |
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | LACM |
Metadata
| Database number: | 5495 | ||
| Authorizer: | A. Miller, W. Kiessling | Enterer: | K. Layou, W. Kiessling |
| Modifier: | A. Hendy | Research group: | marine invertebrate |
| Created: | 1999-10-06 10:32:58 | Last modified: | 2016-02-29 01:03:07 |
| Access level: | the public | Released: | 1999-10-06 10:32:58 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 322. | R. L. Squires and R. A. Demetrion. 1992. Paleontology of the Eocene Bateque Formation, Baja California Sur, Mexico. Contributions in Science (Natural History Museum of Los Angeles County) 434:1-55 [A. Miller/K. Layou] |
Secondary references:
| 26431 | W. Kiessling. 2008. New opinions on coral taxonomy. [W. Kiessling/W. Kiessling/W. Kiessling] |