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
•this collection is "about 15 feet above 8a"
• 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 94185: authorized by John Alroy, entered by John Alroy on 10.02.2010
Creative Commons license: CC BY (attribution)
Taxonomic list
Foraminifera | |
Globigerina ciperoensis, Globigerina rohri, "Globigerina venezuelana" = Dentoglobigerina venezuelana
"Globigerina venezuelana" = Dentoglobigerina venezuelana Hedberg 1937 | |
Ostracoda | |
Cytherella aff. gracilis ostracod | |
Argilloecia nutusa ostracod | |
Paracypris cf. rosefieldensis Howe and Law 1936 ostracod | |
Macrocypris sp. ostracod | |
Hermanites aff. paijenborchiana ostracod
Hermanites sp. Puri 1955 ostracod
Jugosocythereis vicksburgensis ostracod
Aurila socra ostracod | |
Xestoleberis sp. Sars 1866 ostracod | |
Krithe prolixa van den Bold 1966 ostracod | |
Henryhowella ex gr. asperrima Reuss 1850 ostracod
Costa aff. meka ostracod | |
Bairdia "sp. A" M'Coy 1844 ostracod
Bairdia sp. M'Coy 1844 ostracod | |
Bythocypris sp. Brady 1880 ostracod |