Also known as Sample A-6
Where: Antigua and Barbuda (17.0° N, 61.7° W: paleocoordinates 16.3° N, 60.8° 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; poorly lithified, calcareous 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 94184: authorized by John Alroy, entered by John Alroy on 10.02.2010
Creative Commons license: CC BY (attribution)
Taxonomic list
Foraminifera | |
"Globigerina ciperoensis" = Globigerina (Globigerina) ciperoensis
"Globigerina ciperoensis" = Globigerina (Globigerina) ciperoensis Bolli 1954 subspecies angustiumbilicata
| |
Ostracoda | |
Puriana elongorugata ostracod | |
Cytherella aff. gracilis ostracod
Cytherella sp. Jones 1849 ostracod | |
Paracypris aff. contracta ostracod | |
Procythereis sp. ostracod | |
Bairdia "sp. A" M'Coy 1844 ostracod
Bairdia sp. M'Coy 1844 ostracod | |
Loxoconcha lienenklausi ostracod | |
Paracytheridea sp. Muller 1894 ostracod | |
Costa aff. meka ostracod |