Awaynat Wanin type sect., Aouinet Ouenine II Fmn., samples SM215 & RC17 (Devonian to of Libya)

Where: Libya (28.1° N, 13.0° E: paleocoordinates 47.0° S, 32.5° E)

• coordinate estimated from map

• local area-level geographic resolution

When: Aouinet Ouenine II Formation, Givetian to Givetian (387.7 - 372.2 Ma)

• Formation said to be "Givetian s.l. and basal Frasnian". Samples in upper part of formation. Authors suggest early Frasnian age, on basis of Cyrtospirifer, but these are at about same stratigraphic level as other samples (PBDB coll. 35615) that are said to be late Givetian or early Frasnian.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; siltstone and sandstone

• "bivalves absent...articulated shells common although disarticulated specimens prevail; shell debris rare. Morphological adaptations like extended hinge line and high, large interarea indicative of ... soft bottom. The concentration of shells and the weak fragmentation indicate sorting, but only slight current activity."
• Formation as a whole: "shales, siltstones, and sandstones, with several layers enriched by ferruginous matrix. The sandstone levels...are richly fossiliferous".

Collection methods: Focus of monograph is brachiopods and bivalves, but other elements are sometimes mentioned in passing.

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 35616: authorized by Michael Foote, entered by Michael Foote on 31.12.2003

Creative Commons license: CC BY (attribution)

Taxonomic list

Strophomenata
 Productida - Chonetidae
Devonochonetes sp. Muir-Wood 1962
 Strophomenida - Rafinesquinidae
Leptaena borghiana Mergl and Massa 1992
Rhynchonellata
 Spiriferida - Cyrtospiriferidae
 Spiriferida - Mucrospiriferidae
 Rhynchonellida - Leiorhynchidae
  - Tropidoleptidae