CSUN Loc. 1291a [Bateque Fm]: Ypresian, Mexico
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Anthozoa
- Scleractinia
- Merulinidae
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Antillia batequensis n. sp.
Squires and Demetrion 1992
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Anthozoa
- Scleractinia
- Caryophylliidae
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Stephanocyathus ? sp.
Seguenza 1864
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Echinoidea
- Spatangoida
- Schizasteridae
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Schizaster sp.
Agassiz 1835
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| Schizaster sp. aff. S. lecontei | ||||||||||
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Bivalvia
- Pectinida
- Plicatulidae
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Plicatula sp.
Lamarck 1801
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Gastropoda
- Turbinidae
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Arene mcleani
Squires 1988
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Gastropoda
- Neritidae
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Velates perversus
(Gmelin 1791)
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Gastropoda
- Turritellidae
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Turritella andersoni
Dickerson 1916
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Gastropoda
- Siliquariidae
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Tenagodus bajaensis n. sp.
Squires 1990
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Squires 1990 | |||||||||
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Gastropoda
- Naticidae
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Gyrodes ? sp.
Conrad 1860
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Gastropoda
- Neogastropoda
- Fasciolariidae
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Clavilithes tabulatus
(Dickerson 1913)
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Gastropoda
- Neogastropoda
- Volutidae
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Lyria andersoni
Waring 1917
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Gastropoda
- Ampullinidae
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Pachycrommium clarki
(Stewart 1927)
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Eocernina hannibali
(Dickerson 1914)
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Asterocyclinidae
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Pseudophragmina clarki
(Cushman 1920)
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Chlorophyceae
- Dasycladales
- Dasycladaceae
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Dasycladaceae indet.
Kutzing 1843
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| see common names | ||||||||||
Geography
| Country: | Mexico | State/province: | Baja California |
| Coordinates: | 26.7° North, 112.9° West (view map) | ||
| Paleocoordinates: | 28.9° 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,bioturbation,shelly/skeletal,yellow poorly lithified sandstone |
| Secondary lithology: | lithified "limestone" |
| Includes fossils? | Y |
| Includes fossils? | Y |
| Lithology description: 90 m thick shallow marine deposits that...consist of bioturbated and parallel-laminated, yellow, very fine-grained sandstone (75%) with many interbedded lenses (25%) filled with abundant macrofossils. lenses are described as poorly sorted coquinas. | |
| Environment: | transition zone/lower shoreface |
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: | 5499 | ||
| Authorizer: | A. Miller | Enterer: | K. Layou |
| Modifier: | A. Hendy | Research group: | marine invertebrate |
| Created: | 1999-10-07 07:50:52 | Last modified: | 2016-02-29 00:31:04 |
| Access level: | the public | Released: | 1999-10-07 07:50:52 |
| 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:
| 56522 | R. L. Squires. 1990. New Paleogene Siliquariid and Vermetid Gastropods from the Pacific Coast of Southwestern North America. The Veliger 33(3):286-292 [W. Kiessling/M. Krause] |