USGS 858, Alexander Landing (Cretaceous of the United States)

Where: Barbour County, Alabama (31.8° N, 85.1° W)

• Paleocoordinates: 37.1° N, 52.2° W (Wright 2013)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Ripley Formation, Early/Lower Maastrichtian (70.6 - 66.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology: marine; siliciclastic sediments

Size class: macrofossils

Collected by T.W. Stanton; reposited in the USNM

Primary reference: C. W. Cooke. 1953. American Upper Cretaceous Echinoidea. United States Geological Survey Professional Paper 254-A:1-44 [W. Kiessling/U. Merkel/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 78130: authorized by Wolfgang Kiessling, entered by Uta Merkel on 29.01.2008

Creative Commons license: CC0 (CC0)

Taxonomic list

Echinoidea
 Cassiduloida -
Hardouinia mortonis, "Cassidulus porrectus n. sp." = Hardouinia micrococcus
Hardouinia mortonis Michelin 1850 sea urchin
"Cassidulus porrectus n. sp." = Hardouinia micrococcus Gabb 1860 sea urchin