Where: Michigan (42.3° N, 83.0° W: paleocoordinates 36.0° S, 30.1° W)
• coordinate based on political unit
• outcrop-level geographic resolution
When: Silica Formation, Givetian (387.7 - 382.7 Ma)
• formation-level stratigraphic resolution
Environment/lithology: marine; limestone and shale
Primary reference: R. V. Kesling and R. B. Chilman. 1975. Strata and megafossils of the Middle Devonian Silica Formation. University of Michigan Papers on Paleontology 8:1-408 [M. Foote/M. Foote/M. Foote]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 38476: authorized by Michael Foote, entered by Michael Foote on 21.04.2004, edited by Jennifer Bauer
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Ostracoda | |
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Xystinotus subnodatus, Xystinotus wrightorum, Ulrichia spinifera, Ulrichia conradi, Ulrichia fastidiosa, Ulrichia fragilis, Ulrichia illinearis, Stictobollia alethaae, Tetrastorthynx diabolicus
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Euglyphella projecta, Euglyphella modesta, Euglyphella compressa, Euglyphella lispa, Euglyphella sigmoidalis
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Bairdiocypris gongylus, Bairdiocypris transptyxis, Cytherellina lechria, Cytherellina subquadrata, Cytherellina tanymeka, Cytherellina kutasii, Cytherellina lucasensis, Praepilatina silicensis
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Nannohealdia arcuata, Ponderodictya ohioensis, Ponderodictya punctulifera, Ponderodictya rhodesi, Healdia medusaensis, Healdia gibba, Healdia arkonensis
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Quasillites obliquus, Quasillites concentricus, Quasillites fordei, Quasillites sublunatus, Jenningsina catenulata, Glyphella reticulata
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Kirkbyella (Kirkbyella) bellipuncta, Kirkbyella (Berdanella) unicornis, Kirkbyella (Berdanella) stewartae
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Tetrasacculus bilobus, Hollinella (Keslingella) antespinosa, Hollinella (Keslingella) pumila, Hollinella (Keslingella) labrosa
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Adelphobolbina trilobata, Adelphobolbina spicata, Falsipollex lativelatus, Hanaites platus, Ctenoloculina cicatricosa, Ctenoloculina eurybathrota, Subligaculum bifidum
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Gymnolaemata | |
Stenolaemata | |
Intrapora sp. Hall 1883 | |
Fistuliporidae indet. Ulrich 1882 | |
Stereotoechus cf. typicus Duncan 1939 | |
Rhynchonellata | |
Cyrtina "hamiltonensis" Hall 1857 | |
Tropidoleptus carinatus Conrad 1839 | |
Callipleura cf. nobilis Hall 1860 | |
"Ambocoelia" "umbonata" Conrad 1842 | |
"Brachyspirifer audaculus" = Mediospirifer audaculus
"Brachyspirifer audaculus" = Mediospirifer audaculus Conrad 1842 | |
Mucrospirifer mucronatus Conrad 1841 | |
Pseudoatrypa cf. devoniana Webster 1921 | |
Strophomenata | |
"Orthopleura "sp. B Imbrie"" = Imbriea
"Orthopleura "sp. B Imbrie"" = Imbriea Reily 2020 | |
Schuchertella sp. Girty 1904 | |
Protoleptostrophia perplana Conrad 1839 | |
Megastrophia concava, Pholidostrophia gracilis, Pholidostrophia nacrea, "Strophodonta "demissa"" = Strophodonta (Strophodonta) demissa
"Strophodonta "demissa"" = Strophodonta (Strophodonta) demissa Conrad 1842 | |
Lophophorata | |
Tentaculites bellulus Hall 1876 | |
Anthozoa | |
Planalveolitella parasitica tabulate coral | |
Aulocystis jacksoni tabulate coral
Aulocystis lucasensis tabulate coral | |
"Trachypora minuitissima" = Thamnoptychia
"Trachypora minuitissima" = Thamnoptychia tabulate coral |