Shell Oil Co. Pine Field Nos. 1 and 43-22A, Deadwood Fm., Arenig, zones f and g, (Ordovician of the United States)

Where: Montana (47.2° N, 110.2° W: paleocoordinates 7.4° S, 75.6° W)

• coordinate based on political unit

• basin-level geographic resolution

When: Hintzeia celsaora trilobite zone, Deadwood Formation, Tulean (480.8 - 474.9 Ma)

• "L. Ord.. upper Arenig" Zone G

• group of beds-level stratigraphic resolution

Environment/lithology: lagoonal; limestone

• "sh, ls and congl., some ss. shelf lagoon, near shoreface. BA2. Cratonic shelf"

Size class: macrofossils

Primary reference: C. Lochman-Balk and J. L. Wilson. 1967. Stratigraphy of Upper Cambrian-Lower Ordovician Subsurface Sequence in Williston Basin. AAPG Bulletin 51(6):883-917 [M. Uhen/J. Ju]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 287: authorized by Jack Sepkoski, entered by Mike Sommers on 21.03.1999, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

• "Lochman-Balk and Wilson 1967. biostrat. lists"
Show authors, comments, and common names
Xiphosura
  -
"Merostomata indet." = Xiphosura
"Merostomata indet." = Xiphosura Latreille 1802
Trilobita
 Phacopida - Pliomeridae
Protopliomerops sp.
Protopliomerops sp. Kobayashi 1934 trilobite
 Proetida - Bathyuridae
Peltabellia willistoni n. sp., "Lichnocephala "sp. A"" = Licnocephala
Peltabellia willistoni n. sp. trilobite
"Lichnocephala "sp. A"" = Licnocephala Ross 1951 trilobite
originally entered as "Lidnocephala sp."
 Proetida - Hystricuridae
Psalikilus paraspinosum, Hystricurus "sp. A"
Psalikilus paraspinosum Hintze 1953 trilobite
Hystricurus "sp. A" Raymond 1913 trilobite
 Asaphida - Asaphidae
"Asaphellus sp." = Asaphellus, "Megalaspidella sp." = Asaphellus, Megistaspis sp., Ogyginus sp., "Ptychocephalus montanensis n. sp." = Ptyocephalus, Kayseraspis sp., Aulacoparia (Aulacoparina) impressa n. sp., Presbynileus sp.
"Asaphellus sp." = Asaphellus Callaway 1877 trilobite
"Megalaspidella sp." = Asaphellus Callaway 1877 trilobite
Megistaspis sp. Jaanusson 1956 trilobite
Ogyginus sp. Raymond 1912 trilobite
"Ptychocephalus montanensis n. sp." = Ptyocephalus trilobite
originally entered as "Ptyclocephalus sp."
Kayseraspis sp. Harrington 1938 trilobite
Presbynileus sp. Hintze 1954 trilobite
9478'-9481'
 Asaphida - Remopleurididae
Apatokephalus sp.
Apatokephalus sp. Brögger 1896 trilobite
9478'-9481'
 Corynexochida - Leiostegiidae
Reubenella rex n. gen. n. sp., Lloydia sp.
Reubenella rex n. gen. n. sp. Lochman 1966 trilobite
Lloydia sp. Vogdes 1893 trilobite
Gastropoda
 Euomphalina - Macluritidae
"Lecanospira (Barnesella) aff. affinis" = Teiichispira affinis
"Lecanospira (Barnesella) aff. affinis" = Teiichispira affinis Billings 1865 snail
 Euomphalina - Holopeidae
Raphistomina sp.
Raphistomina sp. Ulrich and Scofield 1897 snail
 Eogastropoda - Sinuopeidae
"Rhombella cf. umbilicata" = Euconia umbilicata, Schizopea sp.
"Rhombella cf. umbilicata" = Euconia umbilicata Dake and Bridge 1932 snail
9475' - 9478'
Schizopea sp. Butts 1926 snail
9484' - 9487'
 Murchisoniina - Hormotomidae
Hormotoma sp., Plethospira sp.
Hormotoma sp. Salter 1859 snail
originally entered as "? Murchisonia sp."
Plethospira sp. Ulrich and Scofield 1897 snail
9475' - 9478'
Rhynchonellata
 Orthida - Plectorthidae
Nanorthis sp.
Nanorthis sp. Ulrich and Cooper 1936
 Pentamerida - Tetralobulidae
Tetralobula sp.
Tetralobula sp. Ulrich and Cooper 1936
 Pentamerida - Clarkellidae
Syntrophina sp.
Strophomenata
 Strophomenida - Taffiidae
Leptella sp.
Leptella sp. Hall and Clarke 1892
Lingulata
 Lingulida - Obolidae
Lingulella sp.
Lingulella sp. Salter 1866
Conodonta
 Protopanderodontida - Protopanderodontidae
Drepanodus sp.
Drepanodus sp. Pander 1856 conodont
9475'-9478'
Graptolithina
  -
Graptolithina indet.
Pterobranchia
 Graptoloidea - Anisograptidae
? Bryograptus sp.
? Bryograptus sp. graptolite
originally entered as "? Bryograptus sp."
Eocrinoidea
  -
Eocrinoidea indet.
Eocrinoidea indet. Jaekel 1918
Hexactinellida
  -
Hexactinellida indet.
Hexactinellida indet. Schmidt 1870 glass sponge