Starrs Cave Member at Harper Quarry and Ollie Quarry (Carboniferous of the United States)

Where: Keokuk County, Iowa (41.2° N, 92.1° W: paleocoordinates 22.4° S, 37.3° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Starrs Cave Member (Wassonville Formation), Kinderhookian (358.9 - 352.0 Ma)

• "from several stacked beds"

• group of beds-level stratigraphic resolution

Environment/lithology: deep subtidal shelf; ooidal, shelly/skeletal grainstone and shelly/skeletal packstone

• "open-marine, central middle-shelf environment just below normal wave base"
• "crinoidal and oolitic grainstones and skeletal packstones"; crinoids are from "crinoidal grainstone"

Size class: macrofossils

Collection methods: State University of Iowa collection

Primary reference: F. J. Gahn and T. K. Baumiller. 2004. A bootstrap analysis for comparative taphonomy applied to Early Mississippian (Kinderhookian) crinoids from the Wassonville Cycle of Iowa. Palaios 19(1):17-38 [J. Alroy/J. Alroy]more details

Purpose of describing collection: taphonomic analysis

PaleoDB collection 73273: authorized by John Alroy, entered by John Alroy on 07.06.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

• most specimens are apparently from Ollie Quarry because (1) the Starrs Cave assemblage was sampled at the Ollie and Harper quarries; (2) the Ollie assemblage was sampled at the Ollie and Keota-Pepper quarries; (3) catalog numbers clustered around 98400 are found in both samples; (4) numbers below 98000 are found only in the Starrs Cave sample and are rare; (5) numbers in the low 98300s are found only in the Ollie sample and are common
Show authors, comments, and common names
Crinoidea
  -
Crinoidea indet.
Crinoidea indet. Miller 1821 Sea lily
"genus uncertain"
 Dendrocrinida - Scytalocrinidae
Hypselocrinus sp.
Hypselocrinus sp. Kirk 1940 Sea lily
 Dendrocrinida - Zeacrinitidae
Linocrinus sp.
Linocrinus sp. Goldring 1939 Sea lily
 Dendrocrinida - Aphelecrinidae
Paracosmetocrinus sp.
Paracosmetocrinus sp. Strimple 1967 Sea lily
 Cyathocrinida - Cyathocrinitidae
Cyathocrinites sp.
Cyathocrinites sp. Miller 1821 Sea lily
 Poteriocrinina - Decadocrinidae
Decadocrinus sp.
Decadocrinus sp. Wachsmuth and Springer 1879 Sea lily
 Taxocrinida - Taxocrinidae
Taxocrinus sp.
Taxocrinus sp. Phillips 1843 Sea lily
 Monobathrida - Actinocrinitidae
Cusacrinus sp.
Cusacrinus sp. Bowsher 1955 Sea lily
 Monobathrida - Batocrinidae
Aorocrinus sp.
Aorocrinus sp. Wachsmuth and Springer 1897 Sea lily
 Monobathrida - Dichocrinidae
Dichocrinus sp.
Dichocrinus sp. Munster 1839 Sea lily
 Monobathrida - Acrocrinidae
Protacrocrinus sp.
Protacrocrinus sp. Moore and Strimple 1969 Sea lily
"Pr": genus name not given anywhere, but Protacrocrinus is the only Kinderhookian crinoid from Iowa whose name starts with Pr
 Monobathrida - Platycrinitidae
Platycrinites sp.
Platycrinites sp. Miller 1821 Sea lily
 Diplobathrida - Rhodocrinitidae
Rhodocrinites sp., Cribanocrinus sp.
Rhodocrinites sp. Miller 1821 Sea lily