Shale Near Christian: Late Ludlow-Pridoli Limestone and Shale SE of Christian: Ludlow - Pridoli, Morocco
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Trilobita
- Phacopida
- Cheiruridae
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Cheirurus cf. sternbergi
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Cephalopoda
- Orthocerida
- Orthoceratidae
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Orthoceras sp.
Breynius 1832
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Bivalvia
- Ostreida
- Pterineidae
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Avicula opportuna
Barrande 1881
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| recombined as Leiopteria opportuna | ||||||||||
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Bivalvia
- Cyrtodontida
- Antipleuridae
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Panenka discreta
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Panenka abrupta
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Dualina robusta
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Dualina excisa
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Necklania resecta
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| original and current combination Neklania | ||||||||||
| Genus given as Dalila; substitution based on Treatise, vol. N, p. 245. | ||||||||||
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Rhynchonellata
- Spiriferida
- Spiriferidae
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Spirifer elevatus
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| see common names | ||||||||||
Geography
| Country: | Morocco |
| Coordinates: | 33.3° North, 6.5° West (view map) |
| Paleocoordinates: | 68.2° South, 22.9° East |
| Basis of coordinate: | based on nearby landmark |
| Geographic resolution: | local area |
Stratigraphy
| Stratigraphic resolution: | formation | ||||
| Stratigraphy comments: Authors base age on shelly fossils. | |||||
Lithology and environment
| Primary lithology: | "limestone" |
| Secondary lithology: | "shale" |
| Includes fossils? | Y |
| Lithology description: "limestone lenses and limestone nodules interbedded with shale" | |
| Environment: | marine indet. |
| Geology comments: 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." | |
Taphonomy
Collection methods and comments
| Reason for describing collection: | biostratigraphic analysis |
Metadata
| Database number: | 27444 | ||
| Authorizer: | M. Foote | Enterer: | M. Foote |
| Modifier: | M. Foote | Research group: | marine invertebrate |
| Created: | 2002-12-06 04:41:37 | Last modified: | 2006-09-13 14:01:03 |
| Access level: | the public | Released: | 2002-12-06 04:41:37 |
| 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] |