Locality B21, Kef en Nsouri, Djebel Tebaga (Permian of Tunisia)

Also known as Reef 200

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: Lower Biohermal Complex Formation, Wordian (268.8 - 265.1 Ma)

• Presence of Yabeina and Neoschwagerina margaritae in lower Djebel Tebaga Biohermal Complex suggests upper Wordian age. Bioherm complex (beds 11-21) is estimated from map to be 138 metres thick.

• group of beds-level stratigraphic resolution

Environment/lithology: reef, buildup or bioherm; lithified limestone and dolomite

• Bioherm complex, not examined in detail; thick bedded, draped, and very lenticular, limestone and dolomite and interbedded wedging thin beds of brown sandstone; carbonate beds vuggy, recrystallized with ghosts of fossils.

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 41658: 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. Includes material from spot localities 21A collected by N.D. Newell (1973) and DJT21 collected by F.G. Stehli (1970).
Demospongea
 Agelasida - Virgolidae
Preeudea minima Termier and Termier 1977 demosponge
Newell 21A
Intratubospongia osiensis n. gen. de Gregorio 1930 demosponge
Newell 21A
 Agelasida - Exotubispongiidae
Exotubispongia pustulata n. gen. n. sp.
Exotubispongia pustulata n. gen. n. sp. Rigby and Senowbari-Daryan 1996 demosponge
Newell 21A
 Agelasida - Preperonidellidae
"Peronidella multiosculata n. gen. n. sp." = Preperonidella multiosculata
"Peronidella multiosculata n. gen. n. sp." = Preperonidella multiosculata Rigby and Senowbari-Daryan 1996 demosponge
Newell 21A
 Agelasida - Stellispongiellidae
Stellispongiella bacilla n. gen. Termier and Termier 1955 demosponge
Newell 21A
Stellispongiella insculpta n. gen. n. sp. Rigby and Senowbari-Daryan 1996 demosponge
Newell 21A
Prestellispongia lobata n. gen. Parona 1933 demosponge
Newell 21A
 Epipolasida - Heliospongiidae
Heliospongia finksi Termier and Termier 1977 demosponge
Newell 21A
Disjectoporidae
  - Disjectoporidae
Radiotrabeculopora reticulata Fan et al. 1991
Newell 21A