Locality B1, Kef en Nsouri, Djebel Tebaga (Permian of Tunisia)

Where: Madanin, Tunisia (33.4° N, 10.2° E: paleocoordinates 7.5° S, 17.9° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Oum el Afia Shale Formation, Wordian (268.8 - 265.1 Ma)

• 20+ metres thick. Oum el Afia shale is lowest stratigraphic unit in the region.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; brown, green shale

• Shale, green brown, contains leaves of land plants, Chusenella

Size class: macrofossils

Primary reference: N. D. Newell, J.K. Rigby, A. Driggs, D.W. Boyd, and F.G. Stehli. 1976. Permian reef complex, Tunisia. Brigham Young University Geology Studies 23(1):75-112 [D. Bottjer/M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 41654: authorized by David Bottjer, entered by Matthew Clapham on 19.07.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

• Includes sponges and bivalves; other groups are undescribed.
Bivalvia
 Trigoniida - Trigoniidae
Lyroschizodus djemelensis1 Boyd and Newell 1979 clam
Demospongea
 Agelasida - Virgolidae
Polytubifungia minima2 Rigby and Senowbari-Daryan 1996 demosponge
Polytubifungia maxima2 Rigby and Senowbari-Daryan 1996 demosponge
Pseudohimatella pauciporata2 Parona 1933 demosponge
Intratubospongia osiensis2 de Gregorio 1930 demosponge
 Agelasida - Auriculospongiidae
Auriculospongia perforata2 Rigby and Senowbari-Daryan 1996 demosponge
 Agelasida - Guadalupiidae
"Cystothalamia ramosa" = Imbricatocoelia ramosa3, Cystothalamia conica3
"Cystothalamia ramosa" = Imbricatocoelia ramosa3 Senowbari-Daryan and Rigby 1988 demosponge
Cystothalamia conica3 Termier and Termier 1977 demosponge
 Agelasida - Spicidae
Spica spica3 Termier and Termier 1977 demosponge
 Agelasida - Preperonidellidae
Permocorynella ovoidalis2 Parona 1933 demosponge
 Agelasida - Stellispongiellidae
Stellispongiella bacilla2 Termier and Termier 1955 demosponge
Prestellispongia permica2 Parona 1933 demosponge
Prestellispongia lobata2 Parona 1933 demosponge
Prestellispongia paula2 Rigby and Senowbari-Daryan 1996 demosponge
 Agelasida - Girtyocoeliidae
Girtyocoelia beedei3 Girty 1909 demosponge
Sollasia ostiolata3 Steinmann 1882 demosponge
 Agelasida - Colospongiidae
Colospongia cortexifera3 Senowbari-Daryan and Rigby 1988 demosponge
Disjectoporidae
  - Disjectoporidae