AMa-2 Nanafalia: Selandian - Thanetian, Alabama

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Gastropoda - Naticidae
Polinices sp. Monfort 1810
1 specimen
"Natica onusta"
Gastropoda - Neogastropoda - Costellariidae
3 specimens
Gastropoda - Neogastropoda - Clavatulidae
5 specimens
1 Surcula nasuta subsp.
Gastropoda - Neogastropoda - Volutidae
1 specimen
Gastropoda - Rostellariidae
7 specimens
Gastropoda - Turritellidae
Turritella mortoni Conrad 1830
10 specimens
Turritella mortoni postmortoni
4 specimens
[entered as Turritella multilria]
Bivalvia - Carditida - Carditidae
2 specimens
Bivalvia - Cardiida - Cardiidae
Acanthocardia tuomeyi (Aldrich 1886)
1 specimen
Bivalvia - Cardiida - Veneridae
1 specimen
Pitar nuttalliopsis greggi
Bivalvia - Ostreida - Ostreidae
25 specimens
4 specimens
Anthozoa - Scleractinia - Dendrophylliidae
Balanophyllia desmophyllum Milne-Edwards and Haime 1848
11 specimens
Balanophyllia desmophyllum microcostada
see common names

Geography
Country:United States State/province:Alabama County:Marengo
Coordinates: 32.3° North, 87.8° West (view map)
Paleocoordinates:36.4° North, 59.8° West (Wright 2013)
Basis of coordinate:based on nearby landmark
Geographic resolution:small collection
Time
Period: Paleogene Epoch: Paleocene
Stage: Selandian - Thanetian 10 m.y. bin: Cenozoic 1
Key time interval: Selandian - Thanetian
Age range of interval: 61.66 - 56 m.y. ago
Stratigraphy
Geological group:Wilcox Formation:Nanafalia Member:"Ostrea thirsae"
Stratigraphic resolution:group of beds
Lithology and environment
Primary lithology:glauconitic,gray,blue unlithified calcareous sandstone
Lithology description: Sand, dark-blueish-gray, massive, calcareous, glauconitic, fossiliferous. The upper beds contain abundant "Ostrea" thirsea but few other fossils. Bed 1, lower part, of Toulmin, LaMoreaux, and Lamphere, 1951, p. 61, contains a large number of species of beautifully preserved mollusks. The bed is now covered by the backwater from Coffeeville Dam.
Environment:shallow subtidal indet.
Taphonomy
Modes of preservation:body
Size of fossils:mesofossils
Collection methods and comments
Collection methods:field collection
Reason for describing collection:biostratigraphic analysis
Metadata
Database number:80386
Authorizer:A. Miller Enterer:J. Sessa
Modifier:J. Sessa Research group:GCP,marine invertebrate
Created:2008-04-16 18:31:19 Last modified:2025-02-22 15:12:02
Access level:the public Released:2008-04-16 18:31:19
Creative Commons license:CC0
Reference information

Primary reference:

124. L. D. Toulmin. 1977. Stratigraphic Distribution of Paleocene and Eocene Fossils in the Eastern Gulf Coast Region. Geological Survey of Alabama, Monograph 13(1):1-602 [M. Patzkowsky/K. Layou/P. Mannion]

Secondary references:

34008 L. C. Ivany, C. Pietsch, J. C. Handley, R. Lockwood, W. D. Allmon and J. A. Sessa. 2018. Little lasting impact of the Paleocene-Eocene Thermal Maximum on shallow marine mollusk faunas. Science Advances [J. Sessa/J. Sessa/J. Sessa]
29915 J. A. Sessa, T. J. Bralower, M. E. Patzkowsky, J. C. Handley, and L. C. Ivany. 2012. Environmental and biological controls on the diversity and ecology of Late Cretaceous through early Paleogene marine ecosystems in the US Gulf Coastal Plain. Paleobiology 38(2):218-239 [M. Patzkowsky/J. Sessa/J. Sessa]