Sohl and Koch OFR # 12 (Cretaceous of the United States)

Also known as Mound City; USGS # 32311

Where: Union County, Mississippi (34.5° N, 88.9° W: paleocoordinates 38.0° N, 66.2° W)

• small collection-level geographic resolution

When: Gansserina gansseri foram zone, Chiwapa Formation, Early/Lower Maastrichtian (70.6 - 66.0 Ma)

• 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.

• formation-level stratigraphic resolution

Environment/lithology: marine; lithified, glauconitic sandstone

Size class: mesofossils

Preservation: original calcite

Reposited in the USGS

Collection methods: bulk,

• Sohl collection

Primary reference: 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]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 4103: authorized by Matt Kosnik, entered by Matt Kosnik on 14.08.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Mytilida - Crenellidae
Crenella serica Conrad 1860 clam
Crenella serica Conrad
 Arcida - Glycymerididae
Glycymeris rotundata clam
Glycymeris rotundata (Gabb)
 Pectinida - Entoliidae
Syncyclonema simplicius scallop
Syncylonema simplicus (Conrad) - originally entered as "Syncylonema simplicius"
 Pectinida - Anomiidae
Anomia (Anomia) argentaria Morton 1833 jingle
Anomia (Anomia) argentaria Morton
 Ostreida - Flemingostreidae
Cubitostrea tecticosta Gabb 1860 oyster
Cubitostrea tecticosta (Gabb)
 Cardiida - Tellinidae
Tellina sp. Linnaeus 1758 tellin clam
Tellina sp.
 Cardiida - Cardiidae
Trachycardium eufaulensis Conrad 1860 cockle
Trachycardium eufaulensis (Conrad)
Granocardium (Granocardium) tippananum cockle
Granocardium (Granocardium) tippan
 Cardiida - Mactridae
Cymbophora appressa clam
Cymbophora appressa (Gabb)
 Cardiida - Veneridae
Cyprimeria alta venus clam
Cyprimeria alta Conrad
 Lucinida - Lucinidae
Myrtea stephensoni clam
Myrtea stephensoni Gardner
 Lucinida - Mactromyidae
Unicardium sp. d'Orbigny 1850 clam
Unicardium sp.
 Carditida - Crassatellidae
Crassatella vadosa Morton 1834 clam
Crassatella vadosa vadosa Morton
 Trigoniida - Megatrigonioidae
Pterotrigonia (Scabrotrigonia) eufaulensis Gabb 1860 clam
Pterotrigonia (Scabrotrigonia) euf
Gastropoda
 Neogastropoda - Paladmetidae
Paladmete cancellaria Conrad 1858 snail
Paladmete cancellaria (Conrad)
 Cerithioidea - Turritellidae
Laxispira monilifera Sohl 1964 turret shell
Laxispira monilifera Sohl
 Seguenzioidea - Eucyclidae
Calliomphalus sp. Cossmann 1888 snail
Calliomphalus sp.
Sedentaria
 Sabellida - Serpulidae
Serpula sp. Linnaeus 1758
Serpula sp.
Polychaeta
 Serpulimorpha -
Hamulus onyx Morton 1834
Hamulus onyx Morton
Bryozoa
  -
Bryozoa indet. Ehrenberg 1831
Bryozoa (branching)
Deuteropoda
  -
Malacostraca indet. Latreille 1802
Crab parts
Echinoidea
 Cassiduloida -
"Hardouinia sp." = Harduinia
"Hardouinia sp." = Harduinia d'Archiac and Haime 1853 sea urchin
Hardouinea sp.