Where: Algeria (36.3° N, 5.0° E: paleocoordinates 72.6° S, 57.4° E)
• coordinate based on nearby landmark
• local area-level geographic resolution
When: Llandovery to Llandovery (443.4 - 419.2 Ma)
• Lower part of sequence inferred to be Llandovery on basis of graptolites. Orthocerids said to come from near top of exposures, but no age call is made for these. Based on collections 27153 and 27154, the upper parts of sequence may well be Ludlow in age.
Environment/lithology: transition zone or lower shoreface; sandy shale and micaceous shale
•SEP environmental call based on given info and regional context
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 27445: authorized by Michael Foote, entered by Michael Foote on 06.12.2002
Creative Commons license: CC BY (attribution)
Taxonomic list
Pterobranchia | |
"Monograptus convolutus" = Lituigraptus convolutus, Rastrites longispinus, Rastrites approximatus, Rastrites peregrinus, Monograptus communis, Monograptus intermedius
"Monograptus convolutus" = Lituigraptus convolutus Hisinger 1837 graptolite
Rastrites longispinus graptolite
Rastrites approximatus graptolite
Rastrites peregrinus graptolite
Monograptus communis graptolite
Monograptus intermedius graptolite | |
Cephalopoda | |
Lophophorata | |