TU-638 (Miocene of Mexico)

Where: Veracruz, Mexico (18.1° N, 94.2° W)

• Paleocoordinates: 19.8° N, 91.8° W (Wright 2013)

When: Agueguexquite Formation, Late/Upper Miocene (11.6 - 5.3 Ma)

• Overlying Formation: Cedral Formation. Underlying Formation: Paraje Solo Formation. Thickness: Uncertain. (Luque et al, 2020).

Environment/lithology: marine; condensed, fine-grained, medium, brown, red sandstone and black shale

• 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.
• 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).

Size class: macrofossils

Primary reference: 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]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 228595: authorized by Joanna Wolfe, entered by Arthur Lynch on 16.12.2022

Creative Commons license: CC0 (CC0)

Taxonomic list

Show authors, comments, and common names
Malacostraca
 Decapoda - Calappidae
Calappa sp.
Calappa sp. Weber 1795 box crab
 Decapoda - Leucosiidae
Persephona sp.
Persephona sp. Leach 1817 crab
 Decapoda - Portunidae
Euphylax domingensis
Euphylax domingensis Rathbun 1919 swimming crab
 Decapoda - Panopeidae
Eurytium granulosus
 Decapoda - Aethridae
Hepatus lineatinus
Hepatus lineatinus Todd and Collins 2005 crab
 Decapoda - Diogenidae
Petrochirus sp.
Petrochirus sp. Stimpson 1858 hermit crab