Gour Iduka type sect., Ouan Kasa Fmn., Sample UB331 (Devonian of Libya)

Where: Libya (27.0° N, 10.0° E: paleocoordinates 58.9° S, 46.5° E)

• coordinate estimated from map

• local area-level geographic resolution

When: Ouan Kasa Formation, Emsian (407.6 - 393.3 Ma)

• Formation spans much of Lower Devonian. Samples interpreted as Emsian on basis of Styliolina uralica.

• bed-level stratigraphic resolution

Environment/lithology: marine; sandstone and siltstone

• "The small size of the fauna, together with lamination of siltstones suggests unfavourable conditions, possible with fluctuating salinity, water temperature and/or anoxia...Lack of sorting and fragmentation, high concentration of tentaculitids indicate low sed. influx and weak bottom current...shallow subtidal BA2-3."
• Formation as a whole: "sandstones and shales". Shells in coquinites or on bedding planes. See geology comments.

Collection methods: Emphasis of monograph is brachiopods and bivalves. Other elements sometimes mentioned as well.

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: paleoecologic analysis

PaleoDB collection 35633: authorized by Michael Foote, entered by Michael Foote on 01.01.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

 Palaeocopida -
 Styliolinida - Styliolinidae
 Productida - Chonetidae
Chonetidae indet. Bronn 1862
 Rhynchonellida -
  - Tropidoleptidae
 Orthida - Dalmanellidae
Dalmanellidae indet. Schuchert 1913