Where: Antigua and Barbuda (17.0° N, 61.7° W: paleocoordinates 16.3° N, 60.7° W)
• coordinate estimated from map
• small collection-level geographic resolution
When: Globigerina ampliapertura to Globigerina optima optima foram zone, Antigua Formation, Late/Upper Oligocene (28.4 - 23.0 Ma)
• according to van den Bold, "the Oligocene-Miocene boundary" is at the top of the Globorotalia ciperoensis zone, which is immediately younger than the Antigua Formation
•"in most cases" the forams were found "a few feet higher or lower" than the ostracodes
• bed-level stratigraphic resolution
Environment/lithology: marine; sandstone
Size class: microfossils
Collected by W. A. van den Bold in 1964
• repository unclear
Primary reference: W. A. van den Bold. 1966. Ostracoda from the Antigua Formation (Oligocene, Lesser Antilles). Journal of Paleontology 40(5):1233-1236 [J. Alroy/J. Alroy]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 94186: authorized by John Alroy, entered by John Alroy on 10.02.2010
Creative Commons license: CC BY (attribution)
Taxonomic list
Ostracoda | |
Aurila socra ostracod | |
Bairdia "sp. C" M'Coy 1844 ostracod | |
Foraminifera | |
Globigerina ciperoensis, Catapsydrax aff. dissimilis, "Globigerina venezuelana" = Dentoglobigerina venezuelana
"Globigerina venezuelana" = Dentoglobigerina venezuelana Hedberg 1937 | |
"Globigerina ? ampliapertura" = Turborotalia ampliapertura
"Globigerina ? ampliapertura" = Turborotalia ampliapertura Bolli 1957 |