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USGS 7471, Hempstead County, Arkansas, USA
Lat/Long (Decimal) | 33.795,-93.66 |
---|---|
Co-ordinates Derivation | based on nearby landmark |
Given Location | Arkansas, United States |
Mindat.org Region (for given coordinates) | Hempstead County, Arkansas, USA |
Collections
Collection | Reference | Stratigraphic Name | Comments | Lithology | Age |
---|---|---|---|---|---|
USGS 7471, Washington | Cooke C. W. (1953) | Nacatoch Sand | Formation contains lower Maastrichtian Nostoceras alternatum zone ammonites elsewhere in Arkansas | sandstone | 70.6 - 66 Ma Late/Upper Cretaceous |
Recorded Fossils
Accepted Name | Hierarchy | Age |
---|---|---|
Hemiaster wetherbyi species | Animalia : Echinodermata : Echinoidea : Spatangoida : Hemiasteridae : Hemiaster : Hemiaster wetherbyi | 70.6 - 66 Ma Late/Upper Cretaceous |
References
Cooke C. W. (1953) American Upper Cretaceous Echinoidea, United States Geological Survey Professional Paper 254-A, 1-44 |
Data courtesy of: PBDB: The Paleobiology Database, Creative Commons CC-BY licenced. , GBIF: the Global Biodiversity Information Facility, various licences, iDigBio, various licences, and EOL: The Encyclopedia of Life (Open Data Public Domain). Because fossils are made of minerals too!