Basal Bellevue Fm. (Ordovician of the United States)

Where: Kenton County, Kentucky (38.9° N, 84.5° W: paleocoordinates 26.4° S, 60.4° W)

• coordinate based on political unit

• local area-level geographic resolution

When: Bellevue Formation, Maysvillian (450.2 - 449.6 Ma)

• "Mayvillian (U. Ord.)" "basal Member": but Bellevue has no members!

• bed-level stratigraphic resolution

Environment/lithology: shallow subtidal; packstone

• "brach-trepostome packstone (1 exposure) BA2, perhaps toward BA3"

Size class: macrofossils

Primary reference: R. C. Frey. 1987. The paleoecology of a Late Ordovician shale unit from southwest Ohio and southeastern Indiana. Journal of Paleontology 61:242-267 [M. Uhen/J. Ju/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 375: authorized by Jack Sepkoski, entered by Mike Sommers on 20.11.1998, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

• "Frey, 1987b"
Crinoidea
  -
Crinoidea indet. Miller 1821 Sea lily
crinoid
Gastropoda
 Murchisoniina - Lophospiridae
"Donaldiella bowdeni" = Paupospira bowdeni
"Donaldiella bowdeni" = Paupospira bowdeni Safford 1869 snail
Craniata
 Craniida - Craniidae
Rhynchonellata
 Atrypida - Anazygidae
 Orthida - Platystrophiidae
Platystrophia laticosta James 1871
P. ponderosa has only 3 specimens
Platystrophia ponderosa Foerste 1909
2 species
 Orthida - Plectorthidae
Strophomenata
 Strophomenida - Rafinesquinidae
Rafinesquina ponderosa Hayes and Ulrich 1903
Stenolaemata
 Trepostomata - Batostomellidae
 Trepostomata - Heterotrypidae
Heterotrypa sp. Nicholson 1879
 Trepostomata - Halloporidae
"Calopora ramosa" = Parvohallopora ramosa
"Calopora ramosa" = Parvohallopora ramosa Dorbigny 1850