North Percha Creek, Black Range (Carboniferous of the United States)

Where: Sierra County, New Mexico (33.0° N, 107.7° W: paleocoordinates 14.9° S, 51.3° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Nunn Member (Lake Valley Formation), Osagean (352.0 - 343.0 Ma)

Environment/lithology: offshore shelf; lithified, shelly/skeletal grainstone

• shallower shelf environment, similar to the Burlington Shelf

Size classes: macrofossils, mesofossils, microfossils

Preservation: original calcite

Collected by Macurda, D.B.; Laudon, L. R.

Primary reference: E. C. Rhenberg and T. W. Kammer. 2013. Camerate crinoids from the Nunn Member (Tournaisian, Osagean) of the Lower Mississippian Lake Valley Formation, New Mexico. Journal of Paleontology 87(2):312-340more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 235916: authorized by Val Syverson, entered by Val Syverson on 23.08.2024

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Crinoidea
 Diplobathrida - Rhodocrinitidae
Gilbertsocrinus ? sp.
Gilbertsocrinus ? sp. Phillips 1836 Sea lily
 Monobathrida - Actinocrinitidae
Steganocrinus pentagonus, Physetocrinus copei, Physetocrinus lobatus
Steganocrinus pentagonus Hall 1858 Sea lily
Physetocrinus copei Miller 1881 Sea lily
Physetocrinus lobatus Wachsmuth and Springer 1897 Sea lily
 Monobathrida - Periechocrinidae
Aryballocrinus whitei
Aryballocrinus whitei Hall 1861 Sea lily