Where: Oklahoma (34.0° N, 97.0° W: paleocoordinates 22.5° S, 73.8° W)
• coordinate based on nearby landmark
• local area-level geographic resolution
When: Mountain Lake Member (Bromide Formation), Blackriveran (457.3 - 449.6 Ma)
• Lower Mountain Lake Member.
• member-level stratigraphic resolution
Environment/lithology: marine; sandstone and gray shale
Size class: macrofossils
Collection methods: chemical,
Primary reference: R. O. Fay and A. A. Graffham. 1982. Biostratigraphic and paleontological studies. Echinoderm faunas from the Bromide Formation (Middle Ordovician) of Oklahoma: Lawrence, Kansas, University of Kansas Paleontological Institute Monograph 11 30-33 [S. Holland/T. Hanson/T. Hanson]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 23985: authorized by Steven Holland, entered by Tori Hanson on 25.07.2002
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Conodonta | |
"Microcoelodus asymmetricus" = Erismodus asymmetricus, "Microcoelodus typus" = Erismodus asymmetricus, "Microcoelodus intermedius" = Erismodus, "Microcoelodus minutidentatus" = Erismodus, "? Microcoelodus sp." = Erismodus, "Microcoelodus inornatus" = Erismodus symmetricus
"Microcoelodus asymmetricus" = Erismodus asymmetricus Branson and Mehl 1933 conodont
"Microcoelodus typus" = Erismodus asymmetricus Branson and Mehl 1933 conodont
"Microcoelodus intermedius" = Erismodus conodont
"Microcoelodus minutidentatus" = Erismodus conodont
"? Microcoelodus sp." = Erismodus conodont
"Microcoelodus inornatus" = Erismodus symmetricus Branson and Mehl 1933 conodont | |
"Curtognathus coronata" = Curtognathus, "Curtognathus limitaris" = Curtognathus, "Cardiodella arcuatus" = Curtognathus, "Cardiodella robustus" = Curtognathus
"Curtognathus coronata" = Curtognathus conodont
"Curtognathus limitaris" = Curtognathus conodont
"Cardiodella arcuatus" = Curtognathus conodont
"Cardiodella robustus" = Curtognathus conodont | |
Polyplacognathus sp. n. sp., "Polyplacognathus sweeti" = Cahabagnathus sweeti
Polyplacognathus sp. n. sp. Stauffer 1935 conodont
"Polyplacognathus sweeti" = Cahabagnathus sweeti Bergström 1971 conodont | |
Leptochirognathus extensa conodont
? Leptochirognathus sp. Branson and Mehl 1943 conodont | |
Phragmodus sp. n. sp.
Phragmodus sp. n. sp. Branson and Mehl 1933 conodont | |
Cordylodus sp. Pander 1856 conodont |