USGS paleobotanical loc. D3415, Tuscaloosa Fm., Colbert Co., Alabama (Cretaceous of the United States)

Also known as Sample was collected by W. W. Olive, USGS. His sample number was Ala-2.

Where: Colbert County, Alabama (34.4° N, 87.4° W: paleocoordinates 35.5° N, 56.2° W)

• coordinate based on nearby landmark

When: Tuscaloosa Formation, Late/Upper Cretaceous (100.5 - 66.0 Ma)

• The sample was collected by W. W. Olive, of the U.S. Geological Survey (his sample Ala-2), who stated (written commun., 1964) that it probably is from unit 4 described by Stephenson and Monroe (1940, p. 46).

Environment/lithology: claystone

• This sample is from a dark-gray-brown organic clay.

Size class: microfossils

Preservation: original sporopollenin

Reposited in the USGS

• Holotype: USNM 42449, slide D3415 (mega 13), coordinates 99.6 X 5.5.

•Paratype: USNM 42453, slide D3415 (mega 8), coordinates 90.8 X 7.3.

•Paratype: USNM 42569, slide D3415 (mega 5), coordinates 91.6 X 21.0.

Primary reference: R. H. Tschudy. 1966. Associated megaspores and microspores of the Cretaceous genus Ariadnaesporites Potonie, 1956, emend. United States Geological Survey Professional Paper 550-D:D76-D82 [R. Lupia/B. Wilborn/B. Wilborn]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 34742: authorized by Rick Lupia, entered by Brooke Wilborn on 18.09.2003

Creative Commons license: CC BY (attribution)

Taxonomic list

Pteridopsida
 Salviniales - Salviniaceae
Ariadnaesporites cristatus n. sp.
several hundred specimens of megaspore, thousands of microspores