Shale Near Christian: Late Ludlow-Pridoli Limestone and Shale SE of Christian (Silurian to of Morocco)
Where: Morocco (33.3° N, 6.5° W: paleocoordinates 68.2° S, 22.9° E)
• coordinate based on nearby landmark
• local area-level geographic resolution
When: Ludlow to Ludlow (427.4 - 419.2 Ma)
• Authors base age on shelly fossils.
• formation-level stratigraphic resolution
Environment/lithology: marine; limestone and shale
• Some 500km N of Pridoli shoreline, according to paleogeographic map of ref. 7455. "Shales in the vicinity of Christian...range in age from the Late Llandovery through the Ludlow. [Shales early in sequence.] The youngest beds in this area are the shales with interbedded limestone lenses and nodules."
• "limestone lenses and limestone nodules interbedded with shale"
Primary reference: 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]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 27444: authorized by Michael Foote, entered by Michael Foote on 06.12.2002
Creative Commons license: CC BY (attribution)
Taxonomic list
Show authors, comments, and common names
| Trilobita | |
|
Cheirurus cf. sternbergi trilobite | |
| Cephalopoda | |
|
Orthoceras sp. Breynius 1832 | |
| Bivalvia | |
"Avicula opportuna" = Leiopteria opportuna
"Avicula opportuna" = Leiopteria opportuna Barrande 1881 oyster | |
| Rhynchonellata | |