Emsian/Eifelian Boundary Beds, RT IIIa/2-3 & RT VIII/7, Rabat-Tiflet Area: Zlichovian - Eifelian, Morocco

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Crinoidea
Crinoidea indet. Miller 1821
Alberti 1969
unclassified
Brachiopoda indet. Cuvier 1805
Alberti 1969
Tentaculita - Nowakiida - Nowakiidae
Viriatellina pseudogeinitziana
Viriatellina hercynica Boucek 1964
Cephalopoda - Goniatitida
Goniatitida indet. Hyatt 1884
Alberti 1969
Cephalopoda - Agoniatitida - Mimagoniatitidae
Mimagoniatites ex gr. bohemicus (Barrande 1865)
Trilobita - Odontopleurida - Odontopleuridae
Ceratocephala vesiculosa
Leonaspis sp. Richter and Richter 1917
Alberti 1969
Trilobita - Corynexochida - Styginidae
Paralejurus sp. Hawle and Corda 1847
Trilobita - Proetida - Scharyiidae
Scharyia maura n. sp.
Trilobita - Proetida - Tropidocoryphidae
Tropidocoryphe informal sp. B
Trilobita - Proetida - Proetidae
Eodrevermannia rara Přibyl and Plas 1954
Unguliproetus unguloides (Barrande 1852)
Alberti 1969
Cornuproetus (Piriproetus) sp. (Erben 1952)
Cornuproetus (Diademaproetus) holzapfeli (Novak 1890)
Cornuproetus (Proetopeltis) diourii n. sp. Alberti 1970
Cornuproetus (Macroblepharum) africanus Alberti 1969
Trilobita - Proetida - Tropidocoryphidae
Phaetonellus maurusius n. sp.
Cornuproetus (Tafilaltaspis) cf. creber Alberti 1966
Trilobita - Phacopida - Cheiruridae
Cheirurus (Crotalocephalus) cf. sternbergi (Boeck 1827)
Alberti 1969
Trilobita - Phacopida - Phacopidae
Phacops (Phacops) cf. degener Barrande 1852
Trilobita - Lichida - Lichidae
Lobopyge (? Nitidulopyge) sp. n. sp. Přibyl and Erben 1952
Trilobita - Harpetida - Harpetidae
Harpes sp. Goldfuss 1839
Alberti 1969
see common names

Geography
Country:Morocco
Coordinates: 34.0° North, 6.9° West (view map)
Paleocoordinates:48.3° South, 19.9° East
Basis of coordinate:based on political unit
Geographic resolution:local area
Time
Period: Devonian Epoch: Early Devonian - Middle Devonian
Stage: Emsian - Eifelian 10 m.y. bin: Devonian 2 - Devonian 3
*International age/stage:Late/Upper Emsian - Early/Lower Eifelian *Local age/stage:Zlichovian - Dalejan
Key time interval: Zlichovian - Eifelian
Age range of interval: 407.6 - 387.7 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Rahal Shale
Stratigraphic resolution:group of beds
Stratigraphy comments: Upper Emsian/Lower Eifelian boundary zone. Levels 2-3 of section RT IIIa; level 7 of RT VIII. PJW: Should be Rahal Shale.
Lithology and environment
Primary lithology:gray "limestone"
Secondary lithology: "shale"
Lithology description: Lithology based on stratigraphic column. Lithologies include shale with limestone lenses and blue-gray, brown-weathering crinoidal limestone.
Environment:marine indet.
Geology comments: From Ref. 7488: "The Rabat-Tiflet area is a complex "anticlinal resp. anticlinorial" structure (W-E). The beds are folded in a mediotype style and disturbed by normal faults and several overthrusts of limited extent. Traces of isoclinal folding are rare. The folding is the result of the Hercynian (Variscan) orogeny. The R-T area is a typical region of the so-called Hercynian-Bohemian facies development of the Silurian and Devonian, moreover in facies and faunal development very reminiscent of the barrandian area...It is characterized by a complete marine succession, a conformable gradual transition from the Upper Silurian (Budnanian) into the early Lower Devonian (Lochkovian), without any effects of the Late Caledonian orogeny."
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection excludes:some macrofossils
Reason for describing collection:taxonomic analysis
Taxonomic list comments:Faunas of the R-T area include graptolites, tentaculitids, conodonts, and brachiopods. The last two groups have not been studied in detail.
Metadata
Database number:27058
Authorizer:M. Foote Enterer:M. Foote
Modifier:P. Wagner Research group:marine invertebrate
Created:2002-11-15 08:31:18 Last modified:2024-05-19 22:52:23
Access level:the public Released:2002-11-15 08:31:18
Creative Commons license:CC BY
Reference information

Primary reference:
7485. G. K. B. Alberti. 1970. Trilobiten des juengeren Siluriums sowie des Unter- und Mitteldevons. II. Abhandlungen der Senckenbergischen Naturforschenden Gesellschaft 525:1-233 [M. Foote/M. Foote/M. Foote]

Secondary references:

7484 G. K. B. Alberti. 1969. Trilobiten des juengeren Siluriums sowie des Unter- und Mitteldevons. I. Mit Beitraegen zur Silur-Devon-Stratigraphie einiger Gebiete Marokkos und Oberfrankens. Abhandlungen der Senckenbergischen Naturforschenden Gesellschaft 520:1-692 [M. Foote/M. Foote/M. Foote]