Where: Arkansas (36.1° N, 94.2° W: paleocoordinates 10.0° S, 33.4° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Fayetteville Formation, Pendleian (330.9 - 327.0 Ma)

• Lower shale unit. Tumulites varians–Cravenoceras fayettevillae Ammonoid Biozone, whose correlative assemblages appear in the early Pendleian of the E1 stage (Serpukhovian, late early Carboniferous; = middle Chesterian, Late Mississippian) of Western Europe

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified shale

Size class: macrofossils

Collected by R.H. Mapes; reposited in the AMNH

Primary reference: S. Niko and R. H. Mapes. 2016. Coiled nautiloids from the Lower Carboniferous Fayetteville Formation in Arkansas, midcontinent North America. Paleontological Research 20:7-17 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 175862: authorized by Matthew Clapham, entered by Matthew Clapham on 15.01.2016

Creative Commons license: CC BY (attribution)