Eurypterid-Associated Biota of the Acacus Sandstone, Tadrart, Ghat Region, Libya: Llandovery - Wenlock, Libya

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
trace
trace
trace
Trilobita
Trilobita indet. Walch 1771
Eurypterida - Carcinosomatidae
Carcinosoma sp. Claypole 1890
Eurypterida - Pterygotidae
Pterygotus sp. Agassiz 1839
unclassified
trace
Dimorphichnus sp. Seilacher 1955
trace
Rusophycus sp. Hall 1852
trace
Cruziana sp. d'Orbigny 1842
trace
see common names

Geography
Country:Libya
Coordinates: 25.0° North, 10.2° East (view map)
Paleocoordinates:63.6° South, 26.8° East (Wright 2013)
Basis of coordinate:based on political unit
Geographic resolution:local area
Time
Period: Silurian Epoch: Llandovery - Wenlock
10 m.y. bin: Silurian 1 - Silurian 2
*Epoch:Late/Upper Llandovery - Wenlock
Key time interval: Llandovery - Wenlock
Age range of interval: 443.1 - 426.7 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Acacus Sandstone
Stratigraphic resolution:formation
Stratigraphy comments: "Later Llandoverian-Wenlockian? (Berry and Boucot 1973 [PBDB ref. 7455]).
Lithology and environment
Primary lithology: sandstone
Secondary lithology: "shale"
Lithology description: "Quartzitic sandstone, with thin shale interbeds."
Environment:marine indet.
Geology comments: "BA 1-2, depending on whether the eurypterids are more closely associated with the abundant Arthrophycus or with the Cruziana"
Taphonomy
Collection methods and comments
Reason for describing collection:paleoecologic analysis
Metadata
Database number:26987
Authorizer:M. Foote Enterer:M. Foote
Modifier:M. Foote Research group:marine invertebrate
Created:2002-11-11 08:57:16 Last modified:2025-02-22 15:12:02
Access level:the public Released:2002-11-11 08:57:16
Creative Commons license:CC0
Reference information

Primary reference:
4261. R. E. Plotnick. 1999. Habitat of Llandoverian-Lochkovian eurypterids. In A. J. Boucot, J. D. Lawson (eds.), Paleocommunities - a case study from the Silurian and Lower Devonian 106-136 [M. Foote/M. Foote/P. Wagner]