Isotelus-Diplograptus community, Maquoketa Fm. (Ordovician of the United States)
Where: Minnesota (43.6° N, 92.4° W: paleocoordinates 18.5° S, 60.0° W)
• coordinate based on political unit
When: Maquoketa Formation, Richmondian (449.6 - 445.5 Ma)
• "U. Ord.- Richmondian"
Environment/lithology: marine; limestone and shale
• "nodular sh and ls (dark); no shelled benthos (BA6)"
Size class: macrofossils
Primary reference: T. Bayer. 1965. The Maquoketa Formation in Minnesota and an analysis of its benthonic communities. 1-209 [M. Uhen/J. Ju/M. Uhen]more details
Purpose of describing collection: paleoecologic analysis
PaleoDB collection 358: authorized by Jack Sepkoski, entered by Mike Sommers on 20.11.1998
Creative Commons license: CC BY (attribution)
Taxonomic list
• "T. Bayer, 1965. The Maquoketa Fm. in Minnesota and an analysis of it's benthonic communities. Ph. D. diss. UMN 209p."
Show authors, comments, and common names
| unclassified | |
| Pterobranchia | |
"Diplograptus peosta" = Rectograptus peosta
"Diplograptus peosta" = Rectograptus peosta Hall 1861 graptolite | |
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Desmograptus cancellatus Hopkinson 1875 graptolite | |
| Conodonta | |
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Ozarkodina delecta conodont
Ozarkodina concinna conodont | |
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Oistodus abundans conodont | |
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Panderodus gracilis Branson and Mehl 1933 conodont | |
| Cephalopoda | |
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| Trilobita | |
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Amphilichas cf. cucullus Meek and Worthen 1865 trilobite originally entered as "Amphilichas cf. cucullus"
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Pterygometopus cf. sclerops Dalman 1827 trilobite originally entered as "Pterygometopus cf. sclerops"
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| Hexactinellida | |
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