Bou Regreg Limestone, Blue-Gray Finely Crystalline Layer: Pragian, Morocco

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Tentaculita - Nowakiida - Nowakiidae
Nowakia acuaria
Viriatellina aff. galinae
Viriatellina cf. fuchsi
Trilobita - Phacopida - Phacopidae
? Phacops (Reedops) cephalotes Hawle and Corda 1847
recombined as Reedops cephalotes
Phacops (Reedops) cf. bronni (Barrande 1846)
recombined as Reedops bronni
Trilobita - Phacopida - Dalmanitidae
Odontochile rugosum (Hawle and Corda 1847)
recombined as Zlichovaspis (Zlichovaspis) rugosa
Trilobita - Proetida - Proetidae
Prodrevermannia medioxima Alberti 1967
Prodrevermannia jaegeri (Alberti 1964)
Cornuproetus (Eopiriproetus) microphthalmus n. sp. Alberti 1969
recombined as Eopiriproetus microphthalmus
Cornuproetus (Eopiriproetus) grossi Alberti 1966
recombined as Eopiriproetus grossi
see common names

Geography
Country:Morocco
Coordinates: 34.0° North, 6.9° West (view map)
Paleocoordinates:56.3° South, 22.1° East
Basis of coordinate:based on political unit
Geographic resolution:local area
Time
Period:Devonian Epoch:Early/Lower Devonian
Stage:Pragian 10 m.y. bin:Devonian 1
Key time interval:Pragian
Age range of interval:410.80000 - 407.60000 m.y. ago
Stratigraphy
Formation:Bou Regreg Limestone
Stratigraphic resolution:formation
Stratigraphy comments: Bou Regreg-Kalk. Pragian. Layer in the middle of the formation.
Lithology and environment
Primary lithology:gray argillaceous "limestone"
Secondary lithology:gray,blue "limestone"
Includes fossils?Y
Lithology description: Lithology based on stratigraphic column. "Duenplattige graue Schlammkalke", dolomitic limestone, and "Duennbankige graue Flaser- und Knotenkalke" are the principal lithologies. This layer is said to be blue-gray, finely crystalline.
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
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:27039
Authorizer:M. Foote Enterer:M. Foote
Modifier:M. Foote Research group:marine invertebrate
Created:2002-11-14 09:21:57 Last modified:2006-09-13 14:01:03
Access level:the public Released:2002-11-14 09:21:57
Creative Commons license:CC BY
Reference information

Primary reference:
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]