Where: Ecuador (2.3° S, 80.8° W: paleocoordinates 4.8° S, 73.7° W)
• coordinate based on nearby landmark
When: Seca Formation, Late/Upper Eocene (37.2 - 33.9 Ma)
Environment/lithology: marine
Size class: microfossils
Collection methods: Faunal correlations were made by Mr. A. Martinez of the International Petroleum Oil Company.
Primary reference: J. W. Durham, A.N. Dusenbury, Jr, H.D. Hedberg, L. Kehrer, J.G. Marks, R.M. Stainforth, and B. Stone. 1949. The age of the Hannatoma mollusk fauna of South America; a symposium. Journal of Paleontology 23(2):145-160 [L. Ivany/C. Visaggi/C. Visaggi]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 42812: authorized by Linda Ivany, entered by Christy Visaggi on 05.08.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
Foraminifera | |
Hantkenina alabamensis Cushman 1927 | |
Stichocassidulina thalmanni Stone 1946 | |
Nodosariata | |
Robulus chiranus Cushman and Stone 1947 | |
Globothalamea | |