Sohl and Koch OFR # 430 (Cretaceous of the United States)

Also known as Lanham; USGS # 31082

Where: Prince Georges County, Maryland (38.9° N, 76.8° W: paleocoordinates 39.8° N, 52.7° W)

• small collection-level geographic resolution

When: Discoscaphites conradi ammonoid zone, upper Member (Severn Formation), Late/Upper Maastrichtian (70.6 - 66.0 Ma)

• Haustator bilira assemblage zone

• member-level stratigraphic resolution

Environment/lithology: marine; gray, argillaceous sandstone

Size class: macrofossils

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 4374: authorized by Matt Kosnik, entered by Matt Kosnik on 14.08.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

Anthozoa
 Scleractinia - Micrabaciidae
Micrabacia sp. Milne-Edwards 1849 stony coral
Micrabacia spp.
Polychaeta
 Serpulimorpha -
Hamulus onyx Morton 1834
Hamulus onyx Morton
Cephalopoda
 Ammonitida - Baculitidae
Baculites sp. Lamarck 1799 ammonite
Baculites sp.
 Ammonitida - Scaphitidae
Discoscaphites conradi Morton 1834 ammonite
Discoscaphites conradi (Morton) va
Bivalvia
 Nuculanida - Malletiidae
Malletia longfrons clam
Malletia longfrons (Conrad)
 Nuculanida - Nuculanidae
Nuculana whitfieldi pointed nut clam
Nuculana whitfieldi (Gardner)
 Mytilida - Crenellidae
Crenella serica Conrad 1860 clam
Crenella serica Conrad
 Mytilida - Mytilidae
? Mytilus sp. Linnaeus 1758 mussel
Mytilus? sp. - originally entered as "Mytilus ? sp."
 Pectinida - Entoliidae
Syncyclonema simplicius scallop
Syncylonema simplicus (Conrad) - originally entered as "Syncylonema simplicius"
 Ostreida - Pinnidae
Pinna (Pinna) sp. Linnaeus 1758 oyster
Pinna (Pinna) sp.
 Ostreida - Flemingostreidae
Cubitostrea tecticosta Gabb 1860 oyster
Cubitostrea tecticosta (Gabb)
 Arcida - Parallelodontidae
Nemodon eufaulensis clam
Nemodon eufaulensis (Gabb) [entered as Nemodon eufaulensis]
 Arcida - Glycymerididae
Postligata wordeni clam
Postligata wordeni Gardner
 Arcida - Arcidae
Striarca saffordi clam
Striarca saffordi (Gardner) non Gab
 Poromyida - Poromyidae
Liopistha protexta Conrad 1853 clam
Liopistha protexta Conrad
 Solenida - Pharidae
Leptosolen biplicata Conrad 1858 clam
Leptosolen biplicata (Conrad)
 Pholadida - Corbulidae
Caestocorbula (Parmicorbula) percompressa clam
Caesticorbula (Parmicorbula) perco - originally entered as "Caesticorbula percompressa"
Caestocorbula (Caesticorbula) crassaplica Vincent 1910 clam
Caesticorbula (Caesticorbula) cras - originally entered as "Caesticorbula crassaplica"
Corbula monmouthensis Gardner 1916 clam
Corbula monmouthensis Gardner
 Cardiida - Tellinidae
Aenona eufaulensis, "Linearia metastriata" = Linearis
Aenona eufaulensis Conrad 1860 tellin clam
Aenona eufaulensis (Conrad)
"Linearia metastriata" = Linearis tellin clam
Linearia metastriata Conrad
 Cardiida - Cardiidae
Trachycardium eufaulensis Conrad 1860 cockle
Trachycardium eufaulensis (Conrad)
 Cardiida - Arcticidae
Tenea parilis clam
Tenea parilis Conrad
Veniella conradi Morton 1833 clam
Veniella conradi (Morton)
 Cardiida - Mactridae
Cymbophora appressa clam
Cymbophora appressa (Gabb)
Cymbophora berryi clam
Cymbophora berryi (Gardner)
 Cardiida - Veneridae
Cyclorisma parva venus clam
Cyclorisma parva (Gardner)
Legumen ellipticum venus clam
Legumen ellipticum Conrad
 Carditida - Carditidae
Vetericardiella crenalirata clam
Vetericardiella crenalirata (Conra
 Carditida - Crassatellidae
Crassatella vadosa Morton 1834 clam
Crassatella vadosa vadosa Morton
Scambula perplana Conrad 1869 clam
Scambula perplana Conrad
 Trigoniida - Megatrigonioidae
Pterotrigonia (Scabrotrigonia) eufaulensis Gabb 1860 clam
Pterotrigonia (Scabrotrigonia) euf
 Myoida -
Eufistulina sp. Eames 1951 clam
Eufistulana sp. - originally entered as "Eufistulana sp."
Gastropoda
 Heterostropha - Pyramidellidae
Creonella triplicata Wade 1917 snail
Creonella triplicata Wade
 Heterostropha - Ringiculidae
Oligoptycha sp. Meek 1876 snail
Oligoptycha sp.
 Cerithioidea - Turritellidae
Turritella hilgardi, "Turritella (Sohlitella) bilira" = Haustator bilira
Turritella hilgardi turret shell
Turritella hilgardi Sohl
"Turritella (Sohlitella) bilira" = Haustator bilira Stephenson 1941 turret shell
Turritella (Sohlitella) bilira (St
 Cerithioidea - Pickworthiidae
Urceolabrum tuberculatum snail
Urceolabrum turberculatum callistu
 Cerithioidea - Cerithiidae
Cerithium aff. weeksi Wade 1926 cerith snail
Cerithium aff. Certhium weeksi Wa - originally entered as "Cerithium aff. weeksi"
 Neogastropoda - Moreidae
Hercorhynchus (Hercorhyncus) sp. snail
Hercorhyncus (Hercorhyncus) sp. - originally entered as "Hercorhyncus sp."
 Neogastropoda - Fasciolariidae
Remera flexicostata Sohl 1964 snail
Remera flexicostata Sohl
 Neogastropoda - Paladmetidae
Paladmete cancellaria Conrad 1858 snail
Paladmete cancellaria (Conrad)
 Sorbeoconcha - Aporrhaidae
"Arrhoges (Latiala) cf. lobata" = Latiala lobata
"Arrhoges (Latiala) cf. lobata" = Latiala lobata Wade 1926 snail
Arrhoges (Latiala) cf. A. Lobata ( - originally entered as "Arrhoges cf. lobata"
Scaphopoda
 Dentaliida - Dentaliidae
Dentalium leve Stephenson 1923 tusk shell
Dentalium leve Stephenson