Trilobite Marl in the Rechoua Limestone, RT XI/2, Rabat-Tiflet Area, Morocco (Devonian of Morocco)

Where: Morocco (34.0° N, 6.9° W)

• Paleocoordinates: 30.6° S, 10.4° W (Wright 2013)

• coordinate based on political unit

• outcrop-level geographic resolution

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

• Rechoua-Kalk. Pragian. Trilobiten-Mergelkalkbank. Level RT XI/2.

• group of beds-level stratigraphic resolution

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

• 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" is the background lithology, but the trilobite bank is said to be in marly limestone.

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 27040: authorized by Michael Foote, entered by Michael Foote on 14.11.2002

Creative Commons license: CC0 (CC0)

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
Tentaculita
 Nowakiida - Nowakiidae
Nowakia acuaria, Viriatellina aff. galinae, Viriatellina cf. fuchsi
Trilobita
 Proetida - Proetidae
Prodrevermannia jaegeri, Prodrevermannia medioxima, Eodrevermannia (Erbenaspis) arabica, "Cornuproetus (Vicinoproetus) vicinus" = Vicinoproetus vicinus
Prodrevermannia jaegeri Alberti 1964 trilobite
Prodrevermannia medioxima Alberti 1967 trilobite
Eodrevermannia (Erbenaspis) arabica Alberti 1966 trilobite
"Cornuproetus (Vicinoproetus) vicinus" = Vicinoproetus vicinus Barrande 1872 trilobite
 Proetida - Tropidocoryphidae
Tropidocoryphe mauretanica
Tropidocoryphe mauretanica Alberti 1967 trilobite
 Odontopleurida - Odontopleuridae
Dicranurus monstrosus
Dicranurus monstrosus Alberti 1969 trilobite
 Phacopida - Dalmanitidae
"Odontochile aff. hausmanni" = Odontochile hausmani
"Odontochile aff. hausmanni" = Odontochile hausmani Brongniart 1822 trilobite
 Phacopida - Phacopidae
"Phacops (Reedops) cf. bronni" = Reedops bronni, "Phacops (Reedops) aff. sternbergi" = Reedops sternbergi, "Phacops (Reedops) maurulus n. sp." = Reedops maurulus
"Phacops (Reedops) cf. bronni" = Reedops bronni Barrande 1846 trilobite
"Phacops (Reedops) aff. sternbergi" = Reedops sternbergi Hawle and Corda 1847 trilobite
"Phacops (Reedops) maurulus n. sp." = Reedops maurulus Alberti 1969 trilobite