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
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
Eocrinoidea | |
Eocrinoidea indet. Jaekel 1918 | |
Graptolithina | |
Graptolithina indet. graptolite | |
Pterobranchia | |
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Conodonta | |
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Lingulata | |
Lingulella sp. Salter 1866 | |
Strophomenata | |
Leptella sp. Hall and Clarke 1892 | |
Rhynchonellata | |
Tetralobula sp. Ulrich and Cooper 1936 | |
Nanorthis sp. Ulrich and Cooper 1936 | |
Gastropoda | |
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"Rhombella cf. umbilicata" = Euconia umbilicata, Schizopea sp.
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"Lecanospira (Barnesella) aff. affinis" = Teiichispira affinis
"Lecanospira (Barnesella) aff. affinis" = Teiichispira affinis Billings 1865 snail | |
Raphistomina sp. Ulrich and Scofield 1897 snail | |
Xiphosura | |
"Merostomata indet." = Xiphosura
"Merostomata indet." = Xiphosura Latreille 1802 | |
Trilobita | |
Reubenella rex n. gen. n. sp., Lloydia sp.
Reubenella rex n. gen. n. sp. Lochman 1966 trilobite
Lloydia sp. Vogdes 1893 trilobite | |
Psalikilus paraspinosum Hintze 1953 trilobite
Hystricurus "sp. A" Raymond 1913 trilobite | |
Peltabellia willistoni n. sp., "Lichnocephala "sp. A"" = Licnocephala
Peltabellia willistoni n. sp. trilobite | |
Protopliomerops sp. Kobayashi 1934 trilobite | |
Aulacoparia (Aulacoparina) impressa n. sp., Kayseraspis sp., Ogyginus sp., "Ptychocephalus montanensis n. sp." = Ptyocephalus, Megistaspis sp., Presbynileus sp., "Asaphellus sp." = Asaphellus, "Megalaspidella sp." = Asaphellus
Aulacoparia (Aulacoparina) impressa n. sp. trilobite
Kayseraspis sp. Harrington 1938 trilobite
Ogyginus sp. Raymond 1912 trilobite
"Ptychocephalus montanensis n. sp." = Ptyocephalus trilobite originally entered as "Ptyclocephalus sp."
Megistaspis sp. Jaanusson 1956 trilobite
"Asaphellus sp." = Asaphellus Callaway 1877 trilobite
"Megalaspidella sp." = Asaphellus Callaway 1877 trilobite | |
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Hexactinellida | |
Hexactinellida indet. Schmidt 1870 glass sponge |