Where: Benton County, Alabama (34.6° N, 92.6° W: paleocoordinates 38.5° N, 71.9° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Clayton Formation (Midway Group), Danian (66.0 - 61.6 Ma)
• LITHOSTRATIGRAPHY: Not stated in text; assumed to be from Clayton Fm, on the basis of other local collections. AGE: Paleocene in test; assumed to be Danian on the basis of age of other local collections. STRATIGRAPHIC REPORTED: From unknown position in local section.
• bed-level stratigraphic resolution
Environment/lithology: coastal; lithology not reported
Size class: macrofossils
Collected by Gardner, Smidt; reposited in the USNM
Collection methods: surface (float), surface (in situ),
• COLLECTOR: J. Gardner, R. Smidt. REPOSITORY: USNM (formerly USGS).
Primary reference: C. W. Cooke. 1959. Cenozoic echinoids of eastern United States. United States Geological Survey Professional Papers 321:1-106 [L. Villier/L. Villier/M. Hopkins]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 155921: authorized by Austin Hendy, entered by Austin Hendy on 04.05.2014
Creative Commons license: CC BY (attribution)
Taxonomic list
Echinoidea | |
"Rhopostoma cruciferum" = Plagiochasma cruciferum
"Rhopostoma cruciferum" = Plagiochasma cruciferum Morton 1830 sea urchin |