Arroyo Uitpa (Miocene of Colombia)

Where: La Guajira, Colombia (12.0° N, 71.4° W: paleocoordinates 10.9° N, 67.4° W)

• coordinate stated in text

When: Uitpa Formation, Aquitanian (23.0 - 20.4 Ma)

• The chondrichthyan-bearing strata lie at 0.5 to 10 m fom the base of the Uitpa Formation

Environment/lithology: coastal; silty, calcareous sandstone

• The lower part of the Uitpa Formation comprises well-differentiated layers of soft light brown shales and calcareous bioturbated siltysandstones presenting thin selenite layers

Size classes: macrofossils, mesofossils

Primary reference: J. D. Carrillo-Briceño, T. Argyriou, V. Zapata, R. Kindlimann, and C. Jaramillo. 2016. A new Early Miocene (Aquitanian) Elasmobranchii assemblage from the la Guajira Peninsula, Colombia. Ameghiniana 53(2):77-99 [C. Jaramillo/C. Pimiento/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 182218: authorized by Carlos Jaramillo, entered by Catalina Pimiento on 15.10.2016, edited by Patricia Holroyd

Creative Commons license: CC BY (attribution)

Taxonomic list

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Chondrichthyes
 Squaliformes - Dalatiidae
Dalatias cf. licha
Dalatias cf. licha Bonnaterre 1788 shark
 Squaliformes - Centrophoridae
Centrophorus sp.
Centrophorus sp. Müller and Henle 1837 gulper shark
 Carcharhiniformes - Carcharhinidae
Carcharhinus sp., Carcharhinus gibbesii
Carcharhinus sp. de Blainville 1816 requiem shark
Carcharhinus gibbesii Woodward 1889 requiem shark
 Carcharhiniformes - Sphyrnidae
Sphyrna laevissima
Sphyrna laevissima Cope 1867 hammerhead shark
 Carcharhiniformes - Hemigaleidae
Hemipristis serra
Hemipristis serra Agassiz 1835 ground shark
 Lamniformes - Alopiidae
Alopias cf. superciliosus
Alopias cf. superciliosus Lowe 1840 thresher shark
 Lamniformes - Lamnidae
Isurus cf. oxyrinchus
Isurus cf. oxyrinchus Rafinesque 1810 mackerel shark
 Lamniformes - Otodontidae
Carcharocles sp., Megalolamna paradoxodon
Carcharocles sp. Jordan 1923 mackerel shark
Megalolamna paradoxodon Shimada et al. 2017 mackerel shark
 Pristiophoriformes - Pristiophoridae
Pristiophorus sp.
Pristiophorus sp. Bleeker 1859 saw shark
 Hexanchiformes - Hexanchidae
Heptranchias cf. howellii
Heptranchias cf. howellii Reed 1946 sevengill shark
 Myliobatiformes - Myliobatidae
Mobula sp.
Mobula sp. Rafinesque 1810 devil ray
Actinopteri
 Teleostei -
Teleostei indet.
Teleostei indet. Müller 1846