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]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

Chondrichthyes
 Squaliformes - Centrophoridae
Centrophorus sp. Müller and Henle 1837 gulper shark
 Odontaspidida - Alopiidae
Alopias cf. superciliosus Lowe 1840 thresher shark
 Plagiostomi - Squalidae
Dalatias cf. licha Bonnaterre 1788 dogfish shark
 Myliobatiformes - Mobulidae
Mobula sp. Rafinesque 1810 devil ray
 Lamniformes - Otodontidae
Carcharocles sp. Jordan 1923 mackerel shark
Megalolamna paradoxodon Shimada et al. 2017 mackerel shark
 Lamniformes - Lamnidae
Isurus cf. oxyrinchus Rafinesque 1810 mako shark
 Carchariniformes - Carcharhinidae
Carcharhinus sp., "Carcharhinus gibbesii" = Carcharhinus gibbesi
Carcharhinus sp. de Blainville 1816 requiem shark
"Carcharhinus gibbesii" = Carcharhinus gibbesi Woodward 1889 requiem shark
 Carchariniformes - Sphyrnidae
Sphyrna laevissima Cope 1867 hammerhead shark
 Carchariniformes - Hemigaleidae
"Hemipristis serra" = Hemipristis heteropleurus
"Hemipristis serra" = Hemipristis heteropleurus Agassiz 1844 ground shark
 Pristiophoriformes - Pristiophoridae
Pristiophorus sp. Bleeker 1859 saw shark
 Hexanchiformes - Hexanchidae
"Heptranchias cf. howellii" = Heptranchias howelli
"Heptranchias cf. howellii" = Heptranchias howelli Reed 1946 sevengill shark
Actinopteri
 Teleostei -
Teleostei indet. Müller 1846