Sohl and Koch OFR # 16: Early/Lower Maastrichtian, Mississippi

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Demospongiae - Clavulina - Clionaidae
Cliona sp.
Clione sp.
Malacostraca
Malacostraca indet. (Latreille 1802)
Crab parts
unclassified
Bryozoa indet. Ehrenberg 1831
Bryozoa (encrusting)
Bryozoa indet. Ehrenberg 1831
Bryozoa (branching)
Polychaeta - Sabellida - Serpulidae
Serpula sp. Linnaeus 1758
Serpula sp.
Polychaeta - Serpulimorpha
Hamulus squamosus
Hamulus squamosus Gabb
Hamulus onyx Morton 1834
Hamulus onyx Morton
Gastropoda - Turritellidae
Turritella vertebroides Morton 1834
2 specimens
Turritella vertebroides Morton
Turritella tippana Conrad 1858
1 specimen
Turritella tippana Conrad
Gastropoda - Naticidae
Gyrodes supraplicatus Conrad 1858
1 specimen
Gyrodes supraplicatus (Conrad)
Gastropoda - Neogastropoda - Pyropsidae
Pyropsis sp. (Conrad 1860)
1 specimen
Pyropsis spp.
Gastropoda - Neogastropoda - Fasciolariidae
Graphidula sp. Stephenson 1941
1 specimen
Graphidula sp.
Gastropoda - Neogastropoda - Volutidae
Liopeplum sp. Dall 1890
1 specimen
Liopeplum sp.
Gastropoda - Ataphridae
Ataphrus sp. n. sp. Gabb 1869
1 specimen
Ataphrus n. sp. - originally entered as "Ataphrus n. sp."
Gastropoda - Heterostropha - Ringiculidae
Ringicula (Ringicula) pulchella (Shumard 1861)
1 specimen
Ringicula (Ringicula) pulchella Sh
Bivalvia - Mytilida - Mytilidae
? Mytilus sp. Linnaeus 1758
1 specimen
Mytilus? sp. - originally entered as "Mytilus ? sp."
Bivalvia - Mytilida - Crenellidae
Crenella serica Conrad 1860
9 specimens
Crenella serica Conrad
Bivalvia - Arcida - Glycymerididae
Glycymeris rotundata
2 specimens
Glycymeris rotundata (Gabb)
Bivalvia - Ostreida - Ostreidae
Ostrea mesenterica Morton 1834
1 specimen
recombined as Lopha mesenterica
Ostrea mesenterica Morton
Bivalvia - Ostreida - Gryphaeidae
Exogyra costata (Say 1820)
10 specimens
original and current combination Exogyra (Exogyra) costata
Exogyra costata Say
Bivalvia - Pectinida - Entoliidae
Syncyclonema simplicius
1 specimen
Syncylonema simplicus (Conrad) - originally entered as "Syncylonema simplicius"
Bivalvia - Pectinida - Pectinidae
Camptonectes (Camptonectes) bubonis (Stephenson 1941)
4 specimens
Camptonectes (Camptonectes) bubonis (
Bivalvia - Pectinida - Neitheidae
Neithea (Neitheops) bexarensis
5 specimens
original and current combination Neitheops
Neithea (Neitheops) bexarensis (St
Bivalvia - Pectinida - Anomiidae
Anomia (Anomia) argentaria Morton 1833
1 specimen
Anomia (Anomia) argentaria Morton
Bivalvia - Pectinida - Limidae
Lima (Lima) reticulata Forbes 1845
5 specimens
recombined as Pseudolimea reticulata
Lima (Lima) reticulata Lyell & For
Bivalvia - Trigoniida - Megatrigoniidae
Pterotrigonia (Scabrotrigonia) angulicostata
2 specimens
Pterotrigonia (Scabrotrigonia) ang
Pterotrigonia (Scabrotrigonia) eufaulensis (Gabb 1860)
13 specimens
Pterotrigonia (Scabrotrigonia) euf
Bivalvia - Cardiida - Cardiidae
Granocardium (Granocardium) kummeli
5 specimens
synonym of Trachycardium
Granocardium (Granocardium) kummel
Trachycardium eufaulensis (Conrad 1860)
7 specimens
Trachycardium eufaulensis (Conrad)
Bivalvia - Cardiida - Arcticidae
Veniella conradi Morton 1833
1 specimen
Veniella conradi (Morton)
Bivalvia - Cardiida - Veneridae
Cyprimeria alta
3 specimens
Cyprimeria alta Conrad
Bivalvia - Carditida - Astartidae
Astarte culebrensis
2 specimens
Astarte? culebrensis (Stephenson)
see common names

Geography
Country:United States State/province:Mississippi County:Union
Coordinates: 34.4° North, 89.0° West (view map)
Paleocoordinates:38.0° North, 66.3° 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
Stratigraphic resolution:formation
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 sandstone
Environment:marine indet. Tectonic setting:passive margin
Taphonomy
Modes of preservation:body,original calcite
Size of fossils:mesofossils
Collection methods and comments
Collection excludes:some macrofossils
Collection methods:bulk,field collection
Reason for describing collection:paleoecologic analysis
Museum repositories:USGS
Collection method comments: Sohl collection
Metadata
Also known as:Okannatie Cr; USGS # 32326
Database number:4107
Authorizer:M. Kosnik Enterer:M. Kosnik
Modifier:M. Manojlovic Research group:GCP,marine invertebrate
Created:1999-08-14 13:00:00 Last modified:2016-07-25 19:01:10
Access level:the public Released:1999-08-14 13:00:00
Creative Commons license:CC BY
Reference information

Primary reference:

281. N. F. Sohl and C. F. Koch. 1987. Upper Cretaceous (Maestrichtian) larger invertebrates from the Haustator bilira Assemblage Zone in the Atlantic Coastal Plain with further data for the East Gulf. USGS Open File Report 87-194:1-172 [M. Kosnik/M. Kosnik]

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]