Locality J1, Halk el Djemel, Djebel Tebaga (Permian of Tunisia)

Where: Madanin, Tunisia (33.4° N, 10.2° E: paleocoordinates 7.5° S, 18.0° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Oum el Afia Shale Formation, Wordian (266.9 - 264.3 Ma)

• Oum el Afia Shale (?) is lowest Permian unit in the region, containing Neoschwagerinids and occurring below Yabeina, suggesting a Wordian age. 26 metres thick.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; gray, green shale

• Shale, grayish green.

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 41971: authorized by David Bottjer, entered by Matthew Clapham on 22.07.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

• Sponges and bivalves.
Bivalvia
 Nuculanida - Malletiidae
Palaeoneilo tebagaensis1 Termier and Termier 1959 clam
Demospongiae
 Agelasida - Sebargasiidae
"Amblysiphonella merlai" = Laccosiphonella merlai3
"Amblysiphonella merlai" = Laccosiphonella merlai3 Parona 1933 demosponge
 Agelasida - Thaumastocoeliidae
Girtyocoelia beedei3 Girty 1909 demosponge
 Agelasida - Spicidae
Spica spica3 Termier and Termier 1977 demosponge
 Agelasida - Virgolidae
Polytubifungia maxima2 Rigby and Senowbari-Daryan 1996 demosponge
 Agelasida - Guadalupiidae
Cystothalamia conica3 Termier and Termier 1977 demosponge
Cystauletes mammilosus3 King 1943 demosponge
 Verticillitida - Colospongiidae
Colospongia cortexifera3 Senowbari-Daryan and Rigby 1988 demosponge