Loc. 7. M-17. Creed bed & banks of Middle Fork of Little Red River (Carboniferous of the United States)

Also known as Abandoned community of Elba

Where: Van Buren County, Arkansas (35.8° N, 92.4° W)

• Paleocoordinates: 21.7° S, 43.5° W (Wright 2013)

• coordinate estimated from map

• small collection-level geographic resolution

When: Imo Formation, Serpukhovian (330.9 - 323.2 Ma)

• Elvirian (E2b-c); late Chesterian is Serpukhovian according to Mii et al. 1999 (GSA Bull 111:960-973)

• bed-level stratigraphic resolution

Environment/lithology: offshore; lithified, concretionary, black, gray, sandy grainstone and shale

• "The environment of deposition...relatively shallow water, low energy offshore area undergoing slow continuous deposition of terrigenous clay with periodic higher-energy incursions of carbonate sediments."
• ...as much as 104 m of dark-gray to black, fissile, clay shale w/ numerous, large, bright-red, orange, or brown concretions. ...the lower 36 m...contains thin limestones, sandstones, and conglomerates.

Reposited in the OSU

Primary reference: R. D. Hoare, M. J., I.I.I. Heaney, and R. H. Mapes. 1989. Bivalves (Mollusca) from the Imo Formation (Mississippian, Chesterian) of North-Central Arkansas. Journal of Paleontology 63(5):582-603 [P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 69285: authorized by Pete Wagner, entered by Pete Wagner on 23.02.2007

Creative Commons license: CC0 (CC0)

Taxonomic list

• Crinoids, bryozoans, brachiopods, bivalves, corals, nautiloids also present.
Show authors, comments, and common names
Rostroconchia
 Conocardiida - Pseudobigaleaidae
"Hippocardia cucullata n. sp." = Baiosoma cucullata1
"Hippocardia cucullata n. sp." = Baiosoma cucullata1 Hoare et al. 1988
Bivalvia
 Nuculida - Nuculidae
Nuculopsis "sp. B", Nuculopsis shumardana, Economolopsis gordoni
Nuculopsis "sp. B" Girty 1912 nut clam
Nuculopsis shumardana Hall 1856 nut clam
Economolopsis gordoni Hoare et al. 1989 nut clam
 Nuculanida - Sareptidae
Paleyoldia angustia, Paleyoldia bruta
Paleyoldia angustia Hoare et al. 1989 clam
Paleyoldia bruta Hoare et al. 1989 clam
 Nuculanida - Malletiidae
Spathelopsis browni, Palaeoneilo sera
Spathelopsis browni Hoare et al. 1989 clam
Palaeoneilo sera Girty 1910 clam
 Nuculanida - Polidevciidae
Phestia corrugata, Phestia obtusa
Phestia corrugata Hoare et al. 1989 clam
Phestia obtusa Hoare et al. 1989 clam
 Myalinida - Myalinidae
Myalina (Myalina) cf. parallela
Gastropoda
 Euomphalina - Euomphalidae
Straparollus (Euomphalus) konobasis2, Straparollus (Euomphalus) variabilis2
Straparollus (Euomphalus) konobasis2 Jeffery et al. 1994 snail
Straparollus (Euomphalus) variabilis2 Jeffery et al. 1994 snail
 Caenogastropoda - Strobeidae
Globozyga mediocris2
Globozyga mediocris2 Jeffery et al. 1994 snail
 Zygopleuroidea - Pseudozygopleuridae
Pseudozygopleura (Pseudozygopleura) sp.2
 Caenogastropoda - Meekospiridae
Meekospira minuta2
Meekospira minuta2 Weller 1916 snail
 Neritoidea - Naticopsidae
"Naticopsis (Naticopsis) genevievensis" = Naticopsis genevievensis2
"Naticopsis (Naticopsis) genevievensis" = Naticopsis genevievensis2 Meek and Worthen 1867 snail
 Bellerophontida - Bellerophontidae
Bellerophon (Bellerophon) welshi2, Retispira yochelsoni2
Bellerophon (Bellerophon) welshi2 Gordon and Yochelson 1987 snail
Retispira yochelsoni2 Jeffery et al. 1994 snail
 Bellerophontida - Euphemitidae
Euphemites whirligigi2, Euphemites chesterensis2
Euphemites whirligigi2 Jeffery et al. 1994 snail
Euphemites chesterensis2 Jeffery et al. 1994 snail
 Murchisoniina - Lophospiridae
"Worthenia (Yochelsonospira) tenuilineata" = Yochelsonospira tenuilineata2
"Worthenia (Yochelsonospira) tenuilineata" = Yochelsonospira tenuilineata2 Girty 1929 snail
 Murchisoniina - Gosseletinidae
"Glabrocingulum (Glabrocingulum) quadrigatum" = Glabrocingulum quadrigatum2, "Glabrocingulum (Glabrocingulum) binodosum" = Glabrocingulum binodosum2, Glabrocingulum (Glabrocingulum) parasolum2, Glabrocingulum (Glabrocingulum) parvanodum n. sp.2, Glabrocingulum (Glabrocingulum) coronulum2, Trepospira (Angyomphalus) desultoria2
"Glabrocingulum (Glabrocingulum) quadrigatum" = Glabrocingulum quadrigatum2 Sadlick and Nielsen 1963 snail
"Glabrocingulum (Glabrocingulum) binodosum" = Glabrocingulum binodosum2 Sadlick and Nielsen 1963 snail
Glabrocingulum (Glabrocingulum) parasolum2 Jeffery et al. 1994 snail
Glabrocingulum (Glabrocingulum) parvanodum n. sp.2 Jeffery et al. 1994 snail
Glabrocingulum (Glabrocingulum) coronulum2 Jeffery et al. 1994 snail
Trepospira (Angyomphalus) desultoria2 Jeffery et al. 1994 snail
 Murchisoniina - Phymatopleuridae
Borestus sp.2
Borestus sp.2 Thomas 1940 snail
 Murchisoniina - Eotomariidae
"Euconospira aff. deserti" = Euconospira desereti2
"Euconospira aff. deserti" = Euconospira desereti2 Gordon and Yochelson 1987 snail
1Hoare et al. 1988; 2Jeffery et al. 1994