Bou Regreg Limestone, Blue-Gray Finely Crystalline Layer (Devonian of Morocco)

Where: Morocco (34.0° N, 6.9° W: paleocoordinates 56.3° S, 22.1° E)

• coordinate based on political unit

• local area-level geographic resolution

When: Bou Regreg Limestone Formation, Pragian (410.8 - 407.6 Ma)

• Bou Regreg-Kalk. Pragian. Layer in the middle of the formation.

• formation-level stratigraphic resolution

Environment/lithology: marine; gray, argillaceous limestone and gray, blue limestone

• 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."
• 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.

Primary reference: 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]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 27039: authorized by Michael Foote, entered by Michael Foote on 14.11.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

• Faunas of the R-T area include graptolites, tentaculitids, conodonts, and brachiopods. The last two groups have not been studied in detail.
Show authors, comments, and common names
Trilobita
 Phacopida - Dalmanitidae
"Odontochile rugosum" = Zlichovaspis (Zlichovaspis) rugosa
"Odontochile rugosum" = Zlichovaspis (Zlichovaspis) rugosa Hawle and Corda 1847 trilobite
 Phacopida - Phacopidae
"Phacops (Reedops) cf. bronni" = Reedops bronni, "? Phacops (Reedops) cephalotes" = Reedops cephalotes
"Phacops (Reedops) cf. bronni" = Reedops bronni Barrande 1846 trilobite
"? Phacops (Reedops) cephalotes" = Reedops cephalotes Hawle and Corda 1847 trilobite
 Proetida - Proetidae
"Cornuproetus (Eopiriproetus) microphthalmus n. sp." = Eopiriproetus microphthalmus, "Cornuproetus (Eopiriproetus) grossi" = Eopiriproetus grossi, Prodrevermannia medioxima, Prodrevermannia jaegeri
"Cornuproetus (Eopiriproetus) microphthalmus n. sp." = Eopiriproetus microphthalmus Alberti 1969 trilobite
"Cornuproetus (Eopiriproetus) grossi" = Eopiriproetus grossi Alberti 1966 trilobite
Prodrevermannia medioxima Alberti 1967 trilobite
Prodrevermannia jaegeri Alberti 1964 trilobite
Tentaculita
 Nowakiida - Nowakiidae
Nowakia acuaria, Viriatellina aff. galinae, Viriatellina cf. fuchsi