Locality G4, Saikra Biohermal Complex, Saikra, Djebel Tebaga (Permian of Tunisia)

Also known as Reef 200

Where: Madanin, Tunisia (33.5° N, 10.3° E)

• Paleocoordinates: 0.6° S, 21.4° E (Wright 2013)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Saikra Biohermal Complex Formation, Capitanian (264.3 - 259.5 Ma)

• Saikra Biohermal Complex is uppermost unit, Capitanian in age. Units 1-4 are interfingering lenses of sponge-algal-bryozoan bioherms with an aggregate thickness of 100 metres.

• group of beds-level stratigraphic resolution

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

• Limestone and shale; this is a reef complex of lensing sponge-algal-bryozoan beds with lenses of marly interref shale bearing abundant sponges, some molluscs, and crinoid columns.

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 41878: authorized by David Bottjer, entered by Matthew Clapham on 21.07.2004

Creative Commons license: CC0 (CC0)

Taxonomic list

• Sponges and bivalves.
Show authors, comments, and common names
unclassified
  -
Mollusca indet.
Mollusca indet. Linnaeus 1758
Crinoidea
 Cladida - Laudonocrinidae
Tetrabrachiocrinus fabianii1
Tetrabrachiocrinus fabianii1 Yakovlev 1934 Sea lily
Disjectoporidae
  - Disjectoporidae
Radiotrabeculopora reticulata2
Demospongiae
 Agelasida - Stellispongiellidae
Prestellispongia lobata n. gen.2, Prestellispongia permica n. gen.2, Prestellispongia bolaria n. gen. n. sp.2, Prestellispongia paula n. gen. n. sp.2, Stellispongiella reticulata n. gen. n. sp.2, Estrellospongia grossa n. gen. n. sp.2
Prestellispongia lobata n. gen.2 Parona 1933 demosponge
Prestellispongia permica n. gen.2 Parona 1933 demosponge
Prestellispongia bolaria n. gen. n. sp.2 Rigby and Senowbari-Daryan 1996 demosponge
Prestellispongia paula n. gen. n. sp.2 Rigby and Senowbari-Daryan 1996 demosponge
Stellispongiella reticulata n. gen. n. sp.2 Rigby and Senowbari-Daryan 1996 demosponge
Estrellospongia grossa n. gen. n. sp.2 Rigby and Senowbari-Daryan 1996 demosponge
 Agelasida - Spicidae
Spica spica3
Spica spica3 Termier and Termier 1977 demosponge
 Agelasida - Thaumastocoeliidae
Sollasia ostiolata3
Sollasia ostiolata3 Steinmann 1882 demosponge
 Agelasida - Virgolidae
Medenina laterala n. gen. n. sp.2, Intratubospongia osiensis2, Pseudohimatella pauciporata n. gen.2
Medenina laterala n. gen. n. sp.2 Rigby and Senowbari-Daryan 1996 demosponge
Intratubospongia osiensis2 de Gregorio 1930 demosponge
Pseudohimatella pauciporata n. gen.2 Parona 1933 demosponge
 Agelasida - Guadalupiidae
"Cystauletes mammilosus" = Discosiphonella mammilosus3, Cystothalamia conica3
"Cystauletes mammilosus" = Discosiphonella mammilosus3 King 1943 demosponge
Cystothalamia conica3 Termier and Termier 1977 demosponge
 Agelasida - Sebargasiidae
Pseudoguadalupia alveolaris3, "Amblysiphonella merlai" = Laccosiphonella merlai3, "Amblysiphonella cf. merlai" = Laccosiphonella merlai3
Pseudoguadalupia alveolaris3 Parona 1933 demosponge
"Amblysiphonella merlai" = Laccosiphonella merlai3 Parona 1933 demosponge
"Amblysiphonella cf. merlai" = Laccosiphonella merlai3 Parona 1933 demosponge
 Agelasida - Exotubispongiidae
Exotubispongia virgulata n. gen. n. sp.2
Exotubispongia virgulata n. gen. n. sp.2 Rigby and Senowbari-Daryan 1996 demosponge
 Agelasida - Solenolmiidae
Preverticillites columnella3
Preverticillites columnella3 Parona 1933 demosponge
 Agelasida - Preperonidellidae
Ramostella stipulata n. gen. n. sp.2, Radiofibra delicata n. gen. n. sp.2, Radiofibra lineata n. gen. n. sp.2, Saginospongia porosa n. gen. n. sp.2, Djemelia amplia n. gen. n. sp.2, Permocorynella ovoidalis n. gen.2, Permocorynella ? ovoidalis n. gen.2
Ramostella stipulata n. gen. n. sp.2 Rigby and Senowbari-Daryan 1996 demosponge
Radiofibra delicata n. gen. n. sp.2 Rigby and Senowbari-Daryan 1996 demosponge
Radiofibra lineata n. gen. n. sp.2 Rigby and Senowbari-Daryan 1996 demosponge
Saginospongia porosa n. gen. n. sp.2 Rigby and Senowbari-Daryan 1996 demosponge
Djemelia amplia n. gen. n. sp.2 Rigby and Senowbari-Daryan 1996 demosponge
Permocorynella ovoidalis n. gen.2 Parona 1933 demosponge
Permocorynella ? ovoidalis n. gen.2 Parona 1933 demosponge
 Agelasida - Auriculospongiidae
Auriculospongia perforata n. sp.2, Auriculospongia auriculata2
Auriculospongia perforata n. sp.2 Rigby and Senowbari-Daryan 1996 demosponge
Auriculospongia auriculata2 Termier and Termier 1955 demosponge
 Verticillitida - Colospongiidae
Platythalamiella newelli n. gen. n. sp.3, Subascosymplegma oussifensis3
Platythalamiella newelli n. gen. n. sp.3 Senowbari-Daryan and Rigby 1988 demosponge
Subascosymplegma oussifensis3 Termier and Termier 1977 demosponge
 Verticillitida - Tebagathalamiidae
Graminospongia girtyi3
Graminospongia girtyi3 Parona 1933 demosponge
 Protomonaxonida - Heliospongiidae
Heliospongia finksi2
Heliospongia finksi2 Termier and Termier 1977 demosponge
1Lane 1979; 2Rigby and Senowbari-Daryan 1996; 3Senowbari-Daryan and Rigby 1988