Kef Sidi Amar, Ouarsenis Mts., unit D (Jurassic of Algeria)

Where: Algeria (35.9° N, 1.6° E: paleocoordinates 26.9° N, 1.9° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Djorf Touka Formation, Early/Lower Pliensbachian (189.6 - 183.0 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: shallow subtidal; lithified limestone

• lituolid micritic limestones, massive limestones with large bivalves, chaetetid limestones with brachiopods

Size class: macrofossils

Primary reference: M. Benhamou, S. Elmi, and Y. Almeras. 2000. Age et contexte dynamique des calcaires a brachiopodes tethysiens (Zeilleriides multiplisses) du Grand Pic de l'Ouarsenis (Tell algerien)[Age and dynamic context of the multicostate zeilleriids limestones of the Grand Pic de l'Ouarsenis (Algerian Tell)]. Comptes rendus de l'Académie des Sciences, Sciences de la Terre et des Planètes 331:717-723 [W. Kiessling/U. Merkel]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 98474: authorized by Wolfgang Kiessling, entered by Uta Merkel on 07.10.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Cephalopoda
 Ammonitida - Eoderoceratidae
Metaderoceras sp.
Metaderoceras sp. Spath 1925 ammonite
Bivalvia
 Ostreida - Plicatostylidae
Cochlearites sp.
 Megalodontida - Megalodontidae
Protodiceras sp.
Protodiceras sp. Böhm 1892 clam
 Carditida - Astartidae
Opisoma sp.
Opisoma sp. Stoliczka 1871 clam
Rhynchonellata
 Rhynchonellida - Tetrarhynchiidae
Gibbirhynchia tounatensis, Gibbirhynchia curviceps
Gibbirhynchia tounatensis Rousselle and Bisch 1967
Gibbirhynchia curviceps Quenstedt 1852
 Terebratulida - Lobothyrididae
Lobothyris punctata, Lobothyris fusiformis
Lobothyris punctata Sowerby 1812
subsp. subpunctata
Demospongiae
 Chaetetida - Chaetetidae
Chaetetidae indet.
Chaetetidae indet. Milne-Edwards and Haime 1850 chaetetid sponge
Foraminifera
  -
Amijiella amiji