Where: Veracruz, Mexico (20.9° N, 97.6° W: paleocoordinates 21.6° N, 91.8° W)
• coordinate based on nearby landmark
• small collection-level geographic resolution
When: Alazán Formation, Early/Lower Oligocene (33.9 - 28.4 Ma)
• the ostracods "show a distinct affinity to those present in the Red Bluff Formation, basal Oligocene of Mississippi"
• bed-level stratigraphic resolution
Environment/lithology: marine; lithology not reported
Size class: microfossils
Collected by M. Mitchell
• Lousiana State University collection
Primary reference: L. A. Laurencich. 1969. Some Ostracoda from the Alazán Formation, Mexico. Micropaleontology 15(4):493-503 [J. Alroy/J. Alroy]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 94173: authorized by John Alroy, entered by John Alroy on 10.02.2010
Creative Commons license: CC BY (attribution)
Taxonomic list
Deuteropoda | |
Ostracoda "new genus 2" Latreille 1802 ostracod
Ostracoda "new genus 1" Latreille 1802 ostracod | |
Ostracoda | |
Cytheretta sp. ostracod | |
Cytherura sp. ostracod
Paracytheridea belhavenensis Howe and Chambers 1935 ostracod | |
Brachycythere sp., Ambocythere aff. elongata, Ambocythere subreticulata, "Cythereis" hysonensis, Buntonia sp.
Brachycythere sp. Alexander 1933 ostracod
Ambocythere aff. elongata ostracod
Ambocythere subreticulata ostracod
Buntonia sp. Howe 1935 ostracod | |
"Clithrocytheridea grigsbyi" = Cytheridea grigsbyi, Krithe hiwanneensis, ? Krithe vicksburgensis, Clithrocytheridea "sp. 2", Clithrocytheridea "sp. 1", Clithrocytheridea caldwellensis
"Clithrocytheridea grigsbyi" = Cytheridea grigsbyi Howe and Chambers 1935 ostracod var. vicksburgensis
Krithe hiwanneensis Howe and Law 1936 ostracod
? Krithe vicksburgensis Howe and Law 1936 ostracod
Clithrocytheridea "sp. 2" Stephenson 1936 ostracod
Clithrocytheridea "sp. 1" Stephenson 1936 ostracod
Clithrocytheridea caldwellensis ostracod | |
Hemicytheridea sp. Kingma 1948 ostracod | |
Jugosocythereis vicksburgensis ostracod
Hermanites sp. Puri 1955 ostracod
Echinocythereis mcguirti ostracod
Hemicythere sp. ostracod | |
Leguminocythereis sp. Howe and Law 1936 ostracod | |
Cytherella hannai Howe and Law 1936 ostracod | |
Cytherelloidea aff. danvillensis Howe 1934 ostracod |