Where: Nuevo Leon, Mexico (25.8° N, 99.2° W: paleocoordinates 26.6° N, 93.1° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Lower marine sandstone Member, Rupelian (33.9 - 28.1 Ma)
• Lower Oligocene age faunas in notheastern Mexico are closely allied to the Chickasawhay and Suwanee limestones of the eastern Gulf Coast. They are recognised in a lower marine sandstone, presumably of lower Oligocene age, and in an upper marine sandstone, presumably of middle Oligocene age. The marine beds are separated by non-maine sediments, typically red and green bentonitic clays. The Oligocene series in Mexico is measured in thousands of feet, although the fauna is only known from a few isolated outcrops.
• bed-level stratigraphic resolution
Environment/lithology: marine; lithified, medium-grained, concretionary, brown, gray, conglomeratic, calcareous sandstone
Size class: macrofossils
Reposited in the USNM
Collection methods: quarrying,
• Collections reposited in USGS and USNM collections.
Primary reference: A. K. Miller and W. M. Furnish. 1938. Aturias from the Tertiary of Mexico. Journal of Paleontology 12(2):149-155 [A. Hendy/A. Hendy]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 43068: authorized by Austin Hendy, entered by Austin Hendy on 10.08.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
Cephalopoda | |
Aturia alabamensis Morton 1834 nautiloid | |
Gastropoda | |
"Oliva ? mississippiensis" = Agaronia mississippiensis
"Oliva ? mississippiensis" = Agaronia mississippiensis Conrad 1848 snail Subspecies: Oliva mississippiensis santander
| |
Olivella blastoides olive snail | |
Terebra (Strioterebrum) ? tantula Conrad 1890 auger snail | |
Pleurofusia ? vicksburgensis Casey 1903 turrid | |
Sinum mississippiense Conrad 1848 moon snail | |
Holospira ? eva slug | |
Bivalvia | |
Brachidontes mississippiensis Conrad 1848 mussel | |
Corbula (Caryocorbula) engonata, "Corbula (Varicorbula) ? laqueata" = Varicorbula laqueata
Corbula (Caryocorbula) engonata Conrad 1848 clam
"Corbula (Varicorbula) ? laqueata" = Varicorbula laqueata Casey 1903 clam | |
"Macrocallista (Chionella) cantui" = Pitar (Chionella), "Chione (? Chamelea) ? matulina" = Chamelea
"Macrocallista (Chionella) cantui" = Pitar (Chionella) venus clam
"Chione (? Chamelea) ? matulina" = Chamelea venus clam | |
"Cerastoderma (Dinocardium) bakeri" = Dinocardium
"Cerastoderma (Dinocardium) bakeri" = Dinocardium cockle |