Also known as Spence Shale
Where: Idaho (42.0° N, 112.0° W: paleocoordinates 5.7° S, 89.7° W)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Glossopleura trilobite zone, Spence Tongue Member (Lead Bell Shale Formation), Delamaran (511.2 - 506.5 Ma)
• Listed as Lower to Middle Cambrian; Glossopleura zone
• formation-level stratigraphic resolution
Environment/lithology: offshore shelf; poorly lithified, concretionary, shelly/skeletal, argillaceous, sandy shale
Size classes: macrofossils, mesofossils
Primary reference: C. E. Resser. 1939. The Spence Shale and its fauna. Smithsonian Miscellaneous Collections 97(12):1-29 [P. Novack-Gottshall/P. Hearn/M. Hopkins]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 76096: authorized by Phil Novack-Gottshall, entered by Paul Hearn on 13.11.2007
Creative Commons license: CC BY (attribution)
Taxonomic list
Morania | |
Morania sp. Walcott 1919 | |
Eocrinoidea | |
Eocrinus longidactylus Walcott 1886 | |
Lingulata | |
Lingulella eucharis Resser 1939 | |
Acrothele affinis Resser 1939 | |
Acrotreta definita Walcott 1902
Acrotreta levata Resser 1939 | |
Paterinata | |
Micromitra lepida Resser 1939
Iphidella grata Resser 1939 | |
Rhynchonellata | |
Hyolitha | |
Hyolithes ornatellus, "Hyolithes cecrops" = Haplophrentis carinatus
Hyolithes ornatellus Resser 1939 | |
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Trilobita | |
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Glossopleura bion, Glossopleura similaris, "Clavaspidella bithus" = Bathyuriscus bithus, Bathyuriscus atossa, "Poliella caranus" = Bathyuriscus (Poliella) caranus, Poliella anteros
Glossopleura bion Walcott 1916 trilobite
Glossopleura similaris Resser 1939 trilobite
"Clavaspidella bithus" = Bathyuriscus bithus Walcott 1916 trilobite
Bathyuriscus atossa Walcott 1916 trilobite
"Poliella caranus" = Bathyuriscus (Poliella) caranus Walcott 1916 trilobite
Poliella anteros Walcott 1916 trilobite | |
? Vistoia minuta, Zacanthoides adjunctus, Zacanthoides gradatus, Zacanthoides idahoensis, Zacanthoides serratus, Zacanthoides abbreviatus, Zacanthoides holopygus
? Vistoia minuta Resser 1939 trilobite
Zacanthoides adjunctus Resser 1939 trilobite
Zacanthoides gradatus Resser 1939 trilobite
Zacanthoides idahoensis Walcott 1908 trilobite
Zacanthoides abbreviatus Resser 1939 trilobite "Represented by fewer specimens than most other species in the
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Oryctocara geikei, "Oryctocephalus walcotti" = Oryctocephalites reynoldsi
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Kootenia idahoensis Resser 1939 trilobite | |
Alokistocare spencense, Alokistocare septum, Chancia ebdome, Chancia evax, Chancia angusta, Clappaspis spencei, Clappaspis idahoensis, Clappaspis dotis, Clappaspis lanata, Clappaspis coriacea, Bythicheilus typicum, Bythicheilus alveatum, "Alokistocare idahoense" = Amecephalus idahoense, "Alokistocare laticaudum" = Amecephalus laticaudum, Elrathia offula, Elrathia rara, Elrathia spencei, Alokistocarella spencei
Alokistocare septum Resser 1939 trilobite
Chancia ebdome trilobite
Chancia evax trilobite
Chancia angusta Resser 1939 trilobite
Clappaspis spencei Resser 1939 trilobite
Clappaspis dotis Resser 1939 trilobite "This species is represented by the largest number of specimens"
Clappaspis coriacea Resser 1939 trilobite
Bythicheilus typicum Resser 1939 trilobite
Bythicheilus alveatum Resser 1939 trilobite
"Alokistocare idahoense" = Amecephalus idahoense Resser 1939 trilobite
"Alokistocare laticaudum" = Amecephalus laticaudum Resser 1939 trilobite
Elrathia rara Resser 1939 trilobite "Single individual, consisting of the cranidium and 17 segments"
Elrathia spencei Resser 1939 trilobite
Alokistocarella spencei Resser 1939 trilobite | |
Stauroholcus typicalis Resser 1939 trilobite
Spencia plena Resser 1939 trilobite | |
Artiopoda | |
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"Agnostus bonnerensis" = Pentagnostus bonnerensis
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Archaeocyatha | |
Archaeocyathus sp. Billings 1861 archaeocyath sponge |