1880-III-B-2/13, Bir al Qasr Fmn., Ash Shati area, N. flank of Murzuk Basin (Devonian to of Libya)

Where: Libya (27.6° N, 12.6° E: paleocoordinates 52.1° S, 38.5° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Bi'r al Qasr Formation, Eifelian to Eifelian (393.3 - 382.7 Ma)

• Age range of formation is Eifelian to Givetian (ref. 8780). However, the bulk is Eifelian, and the Givetian age applies only to the uppermost beds. This sample is said to be from upper part of formation, but it's not clear from what authors say whether it is high enough up to be Givetian.

• bed-level stratigraphic resolution

Environment/lithology: marine; sandstone and silty claystone

• ref. 8780: "The fossils shells are frequently crushed, indicating a high-energy environment"
• Formation in general: "In the typical development, the Formation begins with med-gr. sst, continues w/ silty clayst. b eing interbedded w/ sst., and is finished with sst." [ref. 8780]

Primary reference: M. Mergl and D. Massa. 1992. Devonian and Lower Carboniferous brachiopods and bivalves from western Libya. Biostratigraphie du Paleozoique 12:1-115 [M. Foote/M. Foote/M. Foote]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 36178: authorized by Michael Foote, entered by Michael Foote on 16.01.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Pectinida - Pectinoidae
Pectinidae indet. Wilkes 1810 scallop
Rhynchonellata
 Spiriferida - Spinocyrtiidae
 Rhynchonellida - Trigonirhynchiidae
Cupularostrum sp. Sartenaer 1961