Where: Puerto Rico (18.3° N, 67.0° W: paleocoordinates 17.6° N, 66.0° W)
• coordinate estimated from map
• hand sample-level geographic resolution
When: San Sebastián Formation, Late/Upper Oligocene (28.4 - 23.0 Ma)
• correlates with the Chickasawhay (i.e., late Oligocene)
• bed-level stratigraphic resolution
Environment/lithology: marine; white, argillaceous limestone
Size class: microfossils
Collected by W. A. Gordon
Collection methods: bulk, chemical, sieve,
• Lousiana State University collection
•samples consist of "washed residues" that I assume were chemically treated because most come from presumably lithified marls and limestones
Primary reference: W. A. van den Bold. 1965. Middle Tertiary Ostracoda from northwestern Puerto Rico. Micropaleontology 11(4):381-414 [J. Alroy/J. Alroy]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 94192: authorized by John Alroy, entered by John Alroy on 10.02.2010
Creative Commons license: CC BY (attribution)
Taxonomic list
Ostracoda | |
Xestoleberis sp. Sars 1866 ostracod | |
Cushmanidea howei ostracod | |
Loxoconcha lienenklausi ostracod | |
Bairdia elegantissima ostracod | |
Jugosocythereis vicksburgensis ostracod
Quadracythere brachypygaia n. sp. ostracod
Hemicythere gordoni n. sp. ostracod |