USNM 5553A. ½ mile east of fork in the road, on line between secs. 4 & 5, 3 miles easy of Springdale, south side of Webber Mountain (Carboniferous of the United States)

Where: Washington County, Arkansas (36.2° N, 94.1° W: paleocoordinates 15.4° S, 39.4° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Basal Limestone Member (Fayetteville Formation), Meramecian (343.0 - 335.5 Ma)

• Goniatites granosus zone

• group of beds-level stratigraphic resolution

Environment/lithology: black limestone

• Typical shale is grayish black, rather silty, carbonaceous, normally fissile, locally papery, and weaters to a red or yellow clay.

Size class: macrofossils

Collected by G.H. Girty in 10/5/1908; reposited in the USNM

Primary reference: M., J.r. Gordon. 1969. Revision of some of Girty's invertebrate fossils from the Fayetteville Shale (Mississippian) of Arkansas and Oklahoma - Introduction. United States Geological Survey Professional Paper 606(A):1-7 [P. Wagner/P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 76149: authorized by Pete Wagner, entered by Pete Wagner on 14.11.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
Criboconcha spp.3, ? Tetratylis sp.3
Bivalvia
 Pectinida - Aviculopectinidae
Aviculopecten inspeciosus2, Aviculopecten squamula2
Aviculopecten inspeciosus2 Girty 1910 scallop
Aviculopecten squamula2 Girty 1910 scallop
Gastropoda
 Murchisoniina - Eotomariidae
Euconospira disjuncta4
Euconospira disjuncta4 Girty 1910 snail
Ostracoda
 Platycopida - Knoxitidae
? Geisina retiferiformis3, ? Hypotetragona sp.3
? Geisina retiferiformis3 Girty 1910 ostracod
? Hypotetragona sp.3 Morey 1935 ostracod
 Platycopida - Paraparchitidae
? Paraparchites cyclopeus3
? Paraparchites cyclopeus3 Girty 1910 ostracod
 Platycopida - Sansabellidae
Sansabella reticulata3
 Palaeocopida -
Serenida seminalis3
Serenida seminalis3 Girty 1910 ostracod
 Podocopida - Bairdiidae
Orthobairdia cestriensis3
Orthobairdia cestriensis3 Ulrich 1891 ostracod
 Podocopida - Quasillitidae
Graphiadactyllis fayettevillensis3, Graphiadactyllis ? arkansana3
Graphiadactyllis ? arkansana3 Girty 1910 ostracod
 Podocopida - Healdiidae
Healdia spp.3
Healdia spp.3 Roundy 1926 ostracod
Trilobita
 Proetida - Phillipsiidae
Paladin mucronatus1
Paladin mucronatus1 Girty 1910 trilobite
1Gordon 1969; 2Pojeta 1969; 3Sohn 1969; 4Yochelson 1969