Alazán Sample b (Oligocene of Mexico)

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

Show authors, comments, and common names
Deuteropoda
  -
Ostracoda "new genus 2", Ostracoda "new genus 1"
Ostracoda "new genus 2" Latreille 1802 ostracod
Ostracoda "new genus 1" Latreille 1802 ostracod
Ostracoda
 Podocopida - Leguminocythereidae
Leguminocythereis sp.
Leguminocythereis sp. Howe and Law 1936 ostracod
 Podocopida - Hemicytheridae
Echinocythereis mcguirti, Hemicythere sp., Hermanites sp., Jugosocythereis vicksburgensis
Hemicythere sp. ostracod
Hermanites sp. Puri 1955 ostracod
 Podocopida - Cytherettidae
Cytheretta sp.
 Podocopida - Cytheridae
Hemicytheridea sp.
Hemicytheridea sp. Kingma 1948 ostracod
 Podocopida - Cytheruridae
Cytherura sp., Paracytheridea belhavenensis
Cytherura sp. ostracod
Paracytheridea belhavenensis Howe and Chambers 1935 ostracod
 Podocopida - Cytherideidae
Clithrocytheridea "sp. 2", Clithrocytheridea "sp. 1", Clithrocytheridea caldwellensis, "Clithrocytheridea grigsbyi" = Cytheridea grigsbyi, Krithe hiwanneensis, ? Krithe vicksburgensis
Clithrocytheridea "sp. 2" Stephenson 1936 ostracod
Clithrocytheridea "sp. 1" Stephenson 1936 ostracod
"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
 Podocopida - Trachyleberididae
Brachycythere sp., Buntonia sp., Ambocythere aff. elongata, Ambocythere subreticulata, "Cythereis" hysonensis
Brachycythere sp. Alexander 1933 ostracod
Buntonia sp. Howe 1935 ostracod
"Cythereis" hysonensis Howe and Chambers 1935 ostracod
var. dahmi
 Platycopida -
Cytherelloidea aff. danvillensis
 Platycopida - Cytherellidae
Cytherella hannai
Cytherella hannai Howe and Law 1936 ostracod