Shale on the Northwestern Flank of the Mserser-Zguit Dome: Aeronian - Telychian, Morocco

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Cephalopoda - Orthocerida - Orthoceratidae
Orthoceras sp. Breynius 1832
Bivalvia - Cyrtodontida - Cardiolidae
Cardiola interrupta
Pterobranchia - Graptoloidea - Retiolitidae
Retiolites angustidens
Retiolites geinitzianus Barrande 1850
Petalograptus palmeus
synonym of Petalolithus
Pterobranchia - Graptoloidea - Monograptidae
Rastrites longispinus
Monograptus turriculatus
Monograptus barrandei
Monograptus becki
Monograptus proteus
Monograptus marri
Monograptus dextrorsus
Monograptus runcinatus
Monograptus nudus
Monograptus acus
Monograptus griestonensis
Monograptus crispus
Monograptus discus
Monograptus exigus
Monograptus planus
Monograptus priodon (Bronn 1835)
Monograptus cf. convolutus (Hisinger 1837)
recombined as Lituigraptus convolutus
Monograptus spiralis (Geinitz 1842)
recombined as Oktavites spiralis
see common names

Geography
Country:Morocco
Coordinates: 33.0° North, 6.0° West (view map)
Paleocoordinates:80.3° South, 23.3° East
Basis of coordinate:estimated from map
Geographic resolution:local area
Time
Period:Silurian Epoch:Llandovery
10 m.y. bin:Silurian 1
*International age/stage:Aeronian - Telychian
Key time interval:Aeronian - Telychian
Age range of interval:440.80000 - 433.40000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Stratigraphic resolution:formation
Stratigraphy comments: Graptolites suggest age range of Zones 19 (gregarius) to 25 (crenulatus).
Lithology and environment
Primary lithology: "shale"
Lithology description: "shale"
Environment:marine indet.
Geology comments: Some 1000km NW of Llandovery shoreline, according to paleogeographic map of ref. 7455.
Taphonomy
Collection methods and comments
Reason for describing collection:biostratigraphic analysis
Metadata
Database number:27457
Authorizer:M. Foote Enterer:M. Foote
Modifier:M. Foote Research group:marine invertebrate
Created:2002-12-06 06:10:05 Last modified:2006-09-13 14:01:03
Access level:the public Released:2002-12-06 06:10:05
Creative Commons license:CC BY
Reference information

Primary reference:
7455. W. B. N. Berry and A. J. Boucot. 1973. Correlation of the African Silurian rocks. Geological Society of America Special Paper 147:1-83 [M. Foote/M. Foote/M. Foote]