Alazán Sample 49B (Oligocene of Mexico)

Where: Veracruz, Mexico (21.2° N, 97.7° W: paleocoordinates 21.9° N, 91.9° 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 J. Álvarez

• 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 94169: authorized by John Alroy, entered by John Alroy on 10.02.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

Ostracoda
 Platycopida - Cytherellidae
Cytherella hannai Howe and Law 1936 ostracod
 Podocopida - Pontocyprididae
Argilloecia hiwanneensis Howe and Law 1936 ostracod
 Podocopida - Loxoconchidae
Loxoconcha aff. woodwardsensis Howe and Law 1936 ostracod
 Podocopida - Cytheruridae
 Podocopida - Xestoleberididae
Xestoleberis vicksburgensis Howe and Law 1936 ostracod
 Podocopida - Trachyleberididae
Brachycythere sp. Alexander 1933 ostracod
Trachyleberidea blanpiedi ostracod
aff. var. melvinensis