Hunter Valley allochthon (Ordovician of the United States)

Where: Union County, Kentucky (36.2° N, 83.9° W: paleocoordinates 29.6° S, 69.1° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Benbolt Formation, Middle Ordovician (470.0 - 458.4 Ma)

• Collection was obtained from a 30cm unit it is 182m above the post-Knox unconformity and 7.5m above the contact of the Benbolt with the underlying Rockdell formation.

Environment/lithology: marine; argillaceous packstone and wackestone

• 30cm thick unit of argillaceouspackstone and wackstone.

Size classes: macrofossils, mesofossils

Preservation: original calcite

Collection methods: bulk,

Primary reference: T. W. Broadhead. 1984. Macurdablastus, a Middle Ordovician Blastoid from the Southern Appalachians. The University of Kansas, Paleontological Contibutions (110)1-9 [J. Alroy/D. Mathieson]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 124619: authorized by John Alroy, entered by David Mathieson on 20.02.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
Nannillaneus sp.
Trilobita
 Harpetida - Harpetidae
Dolichoharpes sp.
Dolichoharpes sp. Whittington 1949 trilobite
 Corynexochida - Illaenidae
Bumastus sp.
Bumastus sp. Murchison 1839 trilobite
 Asaphida - Asaphidae
Isotelus sp.
Isotelus sp. Dekay 1824 trilobite
 Phacopida - Pterygometopidae
Calyptaulax sp.
Calyptaulax sp. Cooper 1930 trilobite
Gastropoda
 Euomphalina - Raphistomatidae
Raphistoma sp.
Raphistoma sp. Hall 1847 snail
Strophomenata
 Strophomenida - Rafinesquinidae
"Macrocoelia sp." = Colaptomena
"Macrocoelia sp." = Colaptomena Cooper 1956
 Strophomenida - Syndielasmatidae
Sowerbyites sp.
Sowerbyites sp. Teichert 1937
Rhynchonellata
 Pentamerida - Camerellidae
Camerella sp.
Camerella sp. Billings 1859
 Orthida - Plectorthidae
Mimella sp.
Mimella sp. Cooper 1930
 Orthida - Hesperorthidae
Hesperorthis sp.
Hesperorthis sp. Schuchert and Cooper 1931
 Parablastoidea -
Meristoschisma hudsoni
Paracrinoidea
 Platycystitida - Platycystitidae
Globulocystites sp., Canadocystis tennesseensis
Globulocystites sp. Frest et al. 1979
Canadocystis tennesseensis Parsley and Mintz 1975
Blastoidea
  -
Macurdablastus uniplicatus
Macurdablastus uniplicatus Broadhead 1984 blastoid
Eocrinoidea
  - Rhipidocystidae
Batherocystis appressa
Crinoidea
 Diplobathrida - Rhodocrinitidae
Archaeocrinus peculiaris, Diabolocrinus vesperalis
 Homocrinida - Homocrinidae
Apodasmocrinus punctatus
 Eustenocrinida - Acolocrinidae
Acolocrinus hydraulicus
 Porocrinida -
Palaeocrinus avondalensis, Palaeocrinus planobasalis, Carabocrinus micropunctatus, Triboloporus cryptoplicatus
 Rhombifera - Cheirocrinidae
Coronocystis angulatus
 Rhombifera - Pleurocystitidae
"Regulaecystis pyriformis" = Coopericystis pyriformis
"Regulaecystis pyriformis" = Coopericystis pyriformis Parsley 1970
New species of Cheirocrinidae
 Rhombifera - Caryocystitidae
Ulrichocystis eximia
Demospongiae
 Lithistida - Streptosolenidae
Hudsonospongia sp., Allosaccus sp.
Hudsonospongia sp. Raymond and Okulitch 1940 demosponge
Allosaccus sp. demosponge
 Streptosclerophorida - Hindiidae
Hindia sp.
Hindia sp. Duncan 1879 demosponge