Roadcuts that lead to the municipio de Tubara, W flank of Tubara syncline (Miocene to of Colombia)

Where: Atlántico, Colombia (10.9° N, 75.0° W: paleocoordinates 10.6° N, 73.7° W)

• coordinate estimated from map

When: Tubara Formation, Late/Upper Miocene to Late/Upper Miocene (11.6 - 2.6 Ma)

• Overlying Formation: None. Underlying Formation: Piojo Formation. (Bermudez et al., 2017). Thickness: Anywhere from 150-300 m (Porta 2003; Bermudez et al., 2017).

Environment/lithology: foreshore; gray shale and lithified, gray, yellow sandstone

• Bermudez et al., 2017, say that the crabs found in the Tubara Formation were found at the very top of the column. This section corresponds to the segment C lithofacies in Molinares et al., 2007 and 2012. In Molinares et al., 2012, they say segment C “is interpreted as the product of sedimentation in the transition between foreshore and upper shoreface environments. The foreshore environment is associated with very continuous low-angle plane-parallel bedding (lithofacies C2), whereas the shoreface facies is associated with wave-ripple cross laminated sandstones (lithofacies C3), which changed to cleaner, well-selected and cemented sandstones, in a typical coarsening upward pattern where beds are thicker and more continuous (lithofacies C4).
• The authors (Bermudez et al., 2017) say that the crustaceans in this formation were found within thin to thick fossiliferous dark-gray shale layers, interbedded with thick, cross-bedded, grayish-yellow, lithic sandstone and coquinoid beds (including gastropods, bivalves, cirripedians, polychaete tubes, shark teeth and turtle remains).

Size class: macrofossils

Primary reference: H. D. Bermudez, F. A. Vega-Sandoval, and F. J. Vega. 2017. Neogene decapod crustaceans from the Caribbean of Colombia. Boletín de la Sociedad Geológica Mexicana 69(3):655-668 [J. Wolfe/A. Lynch]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 228493: authorized by Joanna Wolfe, entered by Arthur Lynch on 09.12.2022

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Malacostraca
 Decapoda - Panopeidae
Eurytium sp.
Eurytium sp. Stimpson 1862 crab
 Decapoda - Aethridae
Hepatus lineatinus
Hepatus lineatinus Todd and Collins 2005 crab
 Decapoda - Leucosiidae
Persephona enigmatica
Persephona enigmatica Todd and Collins 2005 crab
 Decapoda - Portunidae
Euphylax maculatus, Scylla sp., Necronectes proavitus
Euphylax maculatus Collins 2005 swimming crab
Scylla sp. De Haan 1833 swimming crab
Necronectes proavitus Rathbun 1918 swimming crab
 Decapoda - Diogenidae
Petrochirus bouvieri
Petrochirus bouvieri Rathbun 1918 hermit crab