IGM 3869, División del Norte Quarry: Danian, Mexico

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Actinopteri - Pycnodontiformes - Pycnodontidae
Pycnodus sp. Agassiz 1833
1 specimen
Actinopteri
Kelemejtubus castroi Cantalice and Alvarado-Ortega 2017
Cantalice and Alvarado-Ortega 2017 1 specimen
Actinopteri - Clupeiformes - Clupeoidei
Clupeidae indet. Cuvier 1817
1 specimen
Actinopteri - Osteoglossiformes - Osteoglossidae
Phareodus sp. Leidy 1873
1 specimen
see common names

Geography
Country:Mexico State/province:Chiapas
Coordinates: 17.5° North, 92.0° West (view map)
Paleocoordinates:21.7° North, 75.6° West
Basis of coordinate:estimated from map
Time
Period:Paleogene Epoch:Paleocene
Stage:Danian 10 m.y. bin:Cenozoic 1
Key time interval:Danian
Age range of interval:66.00000 - 61.60000 m.y. ago
Stratigraphy
Formation:Tenejapa-Lacandon
Lithology and environment
Primary lithology: marl
Lithology description: strata in this locality are finely laminated, yellow to beige, poorly carbonated clays, dolomites, and limestones that form a sequence between 5 and 15 cm in thickness. Its bedding planes show microturbidites, bioturbations, and numerous cylindrical (5-30 mm in length) phosphatized fecal pellets probably produced by the fishes, as well as exceptionally frail carbonized plant or algae remains. After the microscopic analysis of thin sections of fossil fish bearing strata from this site, microfossils have not yet been recovered in this unit. The parallel arrangement of these strata is altered by the presence of scarce spherical carbonate enriched nodules with diameters ranging between a few centimeters and up to 10 cm.
Environment:marine indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection methods:selective quarrying,field collection
Reason for describing collection:taxonomic analysis
Metadata
Database number:190739
Authorizer:P. Holroyd Enterer:P. Holroyd
Modifier:P. Holroyd Research group:vertebrate
Created:2017-12-15 23:21:55 Last modified:2017-12-15 23:44:03
Access level:the public Released:2017-12-15 23:21:55
Creative Commons license:CC BY
Reference information

Primary reference:
64112. J. Alvarado-Ortega, M. Cuevas-García, M. P. Melgarejo-Damián, K. M. Cantalice, A. Alaniz-Galvan, G. Solano-Templos, and B. A. Than-Marchese. 2015. Paleocene fishes from Palenque, Chiapas, southeastern Mexico. Palaeontologia Electronica (18.2.39A)1-22 [P. Holroyd/P. Holroyd]

Secondary references:

64111 K. M. Cantalice and J. Alvarado-Ortega. 2017. Kelemejtubus castroi, gen. et sp. nov., an ancient percomorph (Teleostei, Actinopterygii) from the Paleocene marine deposits near Palenque, Chiapas. Journal of Vertebrate Paleontology (e1383265)1-12 [P. Holroyd/P. Holroyd]