PBDB Collection

Emsian/Eifelian Boundary Beds, RT IIIa/2-3 & RT VIII/7, Rabat-Tiflet Area (Devonian to of Morocco)

Where: Morocco (34.0° N, 6.9° W: paleocoordinates 48.3° S, 19.9° E)

• coordinate based on political unit

• local area-level geographic resolution

When: Rahal Shale Formation, Zlichovian to Zlichovian (409.1 - 387.7 Ma)

• Upper Emsian/Lower Eifelian boundary zone. Levels 2-3 of section RT IIIa; level 7 of RT VIII. PJW: Should be Rahal Shale.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; gray limestone and shale

• 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. Lithologies include shale with limestone lenses and blue-gray, brown-weathering crinoidal limestone.

Size class: macrofossils

Primary reference: 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]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 27058: authorized by Michael Foote, entered by Michael Foote on 15.11.2002

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

Crinoidea
-	Crinoidea indet. Crinoidea indet. Miller 1821 Sea lily
Tentaculita
Nowakiida - Nowakiidae	Viriatellina pseudogeinitziana, Viriatellina hercynica Viriatellina pseudogeinitziana Viriatellina hercynica Boucek 1964
Cephalopoda
Agoniatitida - Mimagoniatitidae	Mimagoniatites ex gr. bohemicus Mimagoniatites ex gr. bohemicus Barrande 1865 ammonite
Goniatitida -	Goniatitida indet. Goniatitida indet. Hyatt 1884 ammonite
Brachiopoda
-	Brachiopoda indet. Brachiopoda indet. Cuvier 1805
Trilobita
Proetida - Scharyiidae	Scharyia maura n. sp. Scharyia maura n. sp. trilobite
Proetida - Tropidocoryphidae	"Cornuproetus (Tafilaltaspis) cf. creber" = Tafilaltaspis creber, Phaetonellus maurusius n. sp., Tropidocoryphe "sp. B" "Cornuproetus (Tafilaltaspis) cf. creber" = Tafilaltaspis creber Alberti 1966 trilobite Phaetonellus maurusius n. sp. trilobite Tropidocoryphe "sp. B" Novak 1890 trilobite
Proetida - Proetidae	"Cornuproetus (Diademaproetus) holzapfeli" = Diademaproetus holzapfeli, "Cornuproetus (Piriproetus) sp." = Piriproetus, "Cornuproetus (Macroblepharum) africanus" = Sculptoproetus africanus, "Cornuproetus (Proetopeltis) diourii n. sp." = Ignoproetus diourii, Unguliproetus unguloides, Eodrevermannia rara "Cornuproetus (Diademaproetus) holzapfeli" = Diademaproetus holzapfeli Novak 1890 trilobite "Cornuproetus (Piriproetus) sp." = Piriproetus Erben 1952 trilobite "Cornuproetus (Macroblepharum) africanus" = Sculptoproetus africanus Alberti 1969 trilobite "Cornuproetus (Proetopeltis) diourii n. sp." = Ignoproetus diourii Alberti 1970 trilobite Unguliproetus unguloides Barrande 1852 trilobite Eodrevermannia rara Přibyl and Plas 1954 trilobite
Odontopleurida - Odontopleuridae	Leonaspis sp., Ceratocephala vesiculosa Leonaspis sp. Richter and Richter 1917 trilobite Ceratocephala vesiculosa trilobite
Phacopida - Cheiruridae	"Cheirurus (Crotalocephalus) cf. sternbergi" = Crotalocephalus sternbergi "Cheirurus (Crotalocephalus) cf. sternbergi" = Crotalocephalus sternbergi Boeck 1827 trilobite
Phacopida - Phacopidae	"Phacops (Phacops) cf. degener" = Pedinopariops degener "Phacops (Phacops) cf. degener" = Pedinopariops degener Barrande 1852 trilobite
Lichida - Lichidae	"Lobopyge (? Nitidulopyge) sp. n. sp." = Perunaspis "Lobopyge (? Nitidulopyge) sp. n. sp." = Perunaspis Přibyl 1949 trilobite
Corynexochida - Styginidae	Paralejurus sp. Paralejurus sp. Hawle and Corda 1847 trilobite
Harpetida - Harpetidae	Harpes sp. Harpes sp. Goldfuss 1839 trilobite