Railroad cut near Union Mission (Loc. 9) (Carboniferous of the United States)

Where: Mayes County, Oklahoma (36.1° N, 95.4° W: paleocoordinates 7.9° S, 32.5° W)

• coordinate stated in text

When: Branneroceras branneri ammonoid zone, Brentwood Limestone Member (Bloyd Formation), Morrowan (323.2 - 318.6 Ma)

• Brentwood Interval, Bloyd Formation

Environment/lithology: marine; limestone and shale

• Brentwood is 40 to 45 feet thick, the upper 25 feet consisting of fossiliferous marine limestone with thin shales and the lower 18 feet consisting of dark shale. Lithologically the limestone units are highly variable, that is, they feather out, thicken, or coalesce laterally.

Size class: macrofossils

Collected by Moore and Strimple; Rowett and Sutherland; reposited in the OU, SUI

Primary reference: R. C. Moore and H. L. Strimple. 1973. Lower Pennsylvanian (Morrowan) crinoids from Arkansas, Oklahoma, and Texas. University of Kansas Paleontological Contributions, Echinodermata Article 60(12):1-84 [G. Webster/G. Webster]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 129915: authorized by John Alroy, entered by Briony Mamo on 02.07.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Crinoidea
 Cladida - Diphuicrinidae
Diphuicrinus croneisi
Diphuicrinus croneisi Moore and Plummer 1938 Sea lily
 Dendrocrinida - Pirasocrinidae
Affinocrinus politus, Affinocrinus grandis n. sp.
Affinocrinus grandis n. sp. Moore and Strimple 1973 Sea lily
 Dendrocrinida - Catacrinidae
Endelocrinus matheri
Endelocrinus matheri Moore and Plummer 1937 Sea lily