1979-IV-A-4/1, Idri Fmn., Ash Shati area, N. flank of Murzuk Basin (Devonian of Libya)

Where: Libya (27.5° N, 13.1° E: paleocoordinates 49.3° S, 35.0° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Idri Formation, Early/Lower Frasnian (383.7 - 382.4 Ma)

• Age range of formation is Givetian to early Frasnian (ref. 8780). However, the bulk is Givetian.

• bed-level stratigraphic resolution

Environment/lithology: marine; sandstone and silty claystone

• BA 3; fossils occur chaotically in sst; subtidal, rough water
• Formation in general: "In the type area, the Fm. consists of fine-to-med.-gr sst. and of two layers with prevailing silty clayst (one of them at the bottom of unit). Towards the east, the silty-argillaceous layers wedge out and the sst become prevalently cross-bedded."

Primary reference: V. Havlicek and P. Rohlich. 1987. Devonian and Carboniferous brachiopods from the northern flank of the Murzug Basin (Libya). Sbornik Geologickych Ved: Paleontologie 28:117-177 [A. Miller/J. Sessa/J. Sessa]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 36191: authorized by Michael Foote, entered by Michael Foote on 16.01.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Bivalvia
  -
"Pelecypoda indet." = Bivalvia
"Pelecypoda indet." = Bivalvia Linnaeus 1758 clam
Cephalopoda
 Nautiloidea -
Nautiloidea indet. Agassiz 1847 nautiloid
Rhynchonellata
 Spiriferida - Cyrtospiriferidae
 Rhynchonellida - Trigonirhynchiidae