Sohl and Koch OFR # 38: Early/Lower Maastrichtian, Mississippi

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Echinoidea - Cassiduloida
Hardouinia aff. mortonis (Michelin 1850)
Hardouinea aff. H. mortonis (Miche - originally entered as "Hardouinia aff. mortonis"
Gastropoda - Epitoniidae
Striaticostatum harbisoni Sohl 1963
6 specimens
Striaticostatum harbisoni Sohl
Gastropoda - Neogastropoda - Pyropsidae
Pyropsis sp. (Conrad 1860)
Pyropsis spp.
Gastropoda - Neogastropoda - Turbinellidae
Napulus fragilis Sohl 1964
Napulus fragilis Sohl
Bivalvia - Cardiida - Tellinidae
Linearia metastriata
1 specimen
original and current combination Linearis
Linearia metastriata Conrad
Bivalvia - Ostreida - Gryphaeidae
Pycnodonte vesicularis (Lamarck 1806)
1 specimen
recombined as Pycnodonta vesicularis
Pycnodonte vesicularis Lamarck
Exogyra costata (Say 1820)
4 specimens
original and current combination Exogyra (Exogyra) costata
Exogyra costata Say
Bivalvia - Pectinida - Limidae
Lima (Lima) sp. Bruguiére 1796
1 specimen
Lima (Lima) sp.
Bivalvia - Pectinida - Anomiidae
Anomia (Anomia) argentaria Morton 1833
2 specimens
Anomia (Anomia) argentaria Morton
Bivalvia - Pectinida - Pectinidae
Camptonectes (Camptonectes) bubonis (Stephenson 1941)
1 specimen
Camptonectes (Camptonectes) bubonis (
Pecten sp. Müller 1776
4 specimens
Pecten sp.
Cephalopoda - Nautilida - Nautilidae
Eutrephoceras perlata (Morton 1834)
recombined as Eutrephoceras perlatus
Eutrephoceras perlata Morton
unclassified
Bryozoa indet. Ehrenberg 1831
Bryozoa (encrusting)
Malacostraca
Malacostraca indet. (Latreille 1802)
Crab parts
see common names

Geography
Country:United States State/province:Mississippi County:Pontotoc
Coordinates: 34.3° North, 89.0° West (view map)
Paleocoordinates:37.9° North, 66.4° West
Geographic resolution:small collection
Time
Period:Cretaceous Epoch:Late/Upper Cretaceous
Stage:Maastrichtian 10 m.y. bin:Cretaceous 8
*Period:Late/Upper Cretaceous *Epoch:Late/Upper Senonian
*International age/stage:Middle - Late/Upper Maastrichtian
Key time interval:Early/Lower Maastrichtian Foram zone: Gansserina gansseri
Age range of interval:72.10000 - 66.00000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Chiwapa Member:upper
Stratigraphic resolution:member
Stratigraphy comments: No forams have been recovered from this unit, it is assigned to the Gansserina gansseri zone by Mancini et al. (1996) by sequence stratigraphy and the biostratigraphy of surrounding units. Haustator bilira assemblage zone.
Lithology and environment
Primary lithology:glauconitic lithified calcareous sandstone
Environment:marine indet. Tectonic setting:passive margin
Taphonomy
Modes of preservation:body,original calcite
Size of fossils:mesofossils
Collection methods and comments
Collection methods:bulk,field collection
Reason for describing collection:paleoecologic analysis
Museum repositories:USGS
Collection method comments: Sohl collection
Metadata
Also known as:E Pontotoc; USGS # 25418
Database number:4120
Authorizer:M. Kosnik Enterer:M. Kosnik
Modifier:J. Sessa Research group:GCP,marine invertebrate
Created:1999-08-14 13:00:00 Last modified:2010-07-26 15:59:29
Access level:the public Released:1999-08-14 13:00:00
Creative Commons license:CC BY
Reference information

Primary reference:

283. N. F. Sohl and C. F. Koch. 1983. Upper Cretaceous (Maestrichtian) Mollusca from the Haustator bilira Assemblage Zone in the East Gulf Coastal Plain. USGS Open File Report 83-451:1-239 [M. Kosnik/M. Kosnik/M. Uhen]

Secondary references:

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]