TU-638: Late/Upper Miocene, Mexico
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Malacostraca
- Decapoda
- Calappidae
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Calappa sp.
Weber 1795
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Malacostraca
- Decapoda
- Aethridae
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Hepatus lineatinus
Todd and Collins 2005
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Malacostraca
- Decapoda
- Panopeidae
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Eurytium granulosus
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Malacostraca
- Decapoda
- Portunidae
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Euphylax domingensis
(Rathbun 1919)
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| original and current combination Podophthalmus domingensis | |||||||
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Malacostraca
- Decapoda
- Leucosiidae
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Persephona sp.
Leach 1817
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Malacostraca
- Decapoda
- Diogenidae
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Petrochirus sp.
Stimpson 1858
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| see common names | |||||||
Geography
| Country: | Mexico | State/province: | Veracruz |
| Coordinates: | 18.1° North, 94.2° West (view map) | ||
| Paleocoordinates: | 18.3° North, 92.7° West |
Time
| Period: | Neogene | Epoch: | Miocene |
| 10 m.y. bin: | Cenozoic 6 | ||
| Key time interval: | Late/Upper Miocene | ||
| Age range of interval: | 11.63000 - 5.33300 m.y. ago |
Stratigraphy
| Formation: | Agueguexquite | ||||
| Stratigraphy comments: Overlying Formation: Cedral Formation. Underlying Formation: Paraje Solo Formation. Thickness: Uncertain. (Luque et al, 2020). |
Lithology and environment
| Primary lithology: | condensed,fine,medium,brown,red sandstone |
| Secondary lithology: | black "shale" |
| Lithology description: Depending on the locality within the formation, it can contain anything from brown to reddish sandstone, which can be fine to medium grained and compacted, to black shale, light gray siltstone, and rhyolitic tuff. (Pineda-Saldago et al, 2016). | |
| Environment: | marine indet. |
| Geology comments: Castillo-Tejero, 1955, mention that this unit is a shallow marine transgressive unit. On the other hand, Akers 1981 mention that the Agueguexquite Formation is outer neritic to upper bathyl. Since the depositional environment cannot be refined further, "Marine Indet." is selected. | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | taxonomic analysis |
Metadata
| Database number: | 228595 | ||
| Authorizer: | J. Wolfe | Enterer: | A. Lynch |
| Created: | 2022-12-16 11:23:12 | Last modified: | 2022-12-16 11:23:12 |
| Access level: | the public | Released: | 2022-12-16 11:23:12 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 83395. | J. Luque, T. Nyborg, J. Alvarado-Ortega and F. J. Vega. 2020. Crustacea (Anomura, Brachyura) from the Miocene of Veracruz and Chiapas, Mexico: New records and new species. Journal of South American Earth Sciences 100 [J. Wolfe/A. Lynch] |