Crinoidal Limestone Lenses in Marl, Emsian/Eifelian Boundary, Hamar Laghdad: Late Emsian - Eifelian, Morocco

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Tentaculita - Nowakiida - Striatostyliolinidae
Metastyliolina aff. striatissima
Tentaculita - Nowakiida - Nowakiidae
Viriatellina pseudogeinitziana
Alberti 1970
Cephalopoda - Agoniatitida - Mimoceratidae
Gyroceratites laevis (Eichenberg 1931)
Cephalopoda - Agoniatitida - Anarcestidae
Anarcestes ex gr. lateseptatus (Beyrich 1837)
Sellanarcestes wenckenbachi
Alberti 1970
Trilobita - Odontopleurida - Odontopleuridae
Koneprusia (Koneprusia) cf. subterarmata
Alberti 1970
Trilobita - Corynexochida - Styginidae
Thysanopeltis ex gr. speciosum (Hawle and Corda 1847)
Scabriscutellum sp. Richter and Richter 1956
Trilobita - Proetida - Scharyiidae
Scharyia tafilaltensis n. sp. Alberti 1970
Alberti 1970
Trilobita - Proetida - Tropidocoryphidae
Tropidocoryphe aff. pseudofilicostata Pribyl 1965
Trilobita - Proetida - Proetidae
Koneprusites oresibios n. sp. van Viersen and Lerouge 2020
van Viersen and Lerouge 2020
Cornuproetus (Diademaproetus) holzapfeli (Novak 1890)
Cornuproetus (Proetopeltis) waldschmidti (Novak 1890)
? Cornuproetus (Macroblepharum) africanus Alberti 1969
Cornuproetus (Sculptoproetus) sculptus (Barrande 1846)
Alberti 1970
Trilobita - Proetida - Tropidocoryphidae
Phaetonellus planicauda (Barrande 1846)
Alberti 1970
Eremiproetus dufresnoyi (Hawle and Corda 1847)
Tafilaltaspis informal n. sp. A
van Viersen and Lerouge 2020
? Cornuproetus (Tafilaltaspis) creber Alberti 1966
Tafilaltaspis rufa n. sp. van Viersen and Lerouge 2020
van Viersen and Lerouge 2020
Trilobita - Proetida - Aulacopleuridae
Aulacopleura (Paraaulacopleura) beyrichi (Novák 1890)
Trilobita - Phacopida - Cheiruridae
Cheirurus (Crotalocephalus) aff. sternbergi (Boeck 1827)
Trilobita - Phacopida - Phacopidae
Phacops (Phacops) aff. fecundus Barrande 1852
Phacops (Phacops) cf. degener Barrande 1852
Alberti 1970
Trilobita - Phacopida - Acastidae
Asteropyginae indet. Delo 1935
Alberti 1970
see common names

Geography
Country:Morocco
Coordinates: 31.4° North, 4.1° West (view map)
Paleocoordinates:48.7° South, 21.8° East
Basis of coordinate:based on nearby landmark
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 - Late/Upper Eifelian
Key time interval: Late Emsian - Eifelian
Age range of interval: 398.3 - 387.7 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Amerboh
Stratigraphic resolution:group of beds
Stratigraphy comments: Boundary region, Upper Emsian/Lower Eifelian: Crinoidal limestone lenses within marl. PJW: This should be the Amberboh formation.
Lithology and environment
Primary lithology: marl
Secondary lithology:shelly/skeletal "limestone"
Includes fossils?Y
Lithology description: See stratigraphy.
Environment:shallow subtidal indet.
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:Focus is on trilobites. Some other elements occasionally mentioned.
Metadata
Database number:27114
Authorizer:M. Foote, W. Kiessling Enterer:M. Foote, M. Krause
Modifier:P. Wagner Research group:marine invertebrate
Created:2002-11-18 11:55:10 Last modified:2024-05-30 16:12:30
Access level:the public Released:2002-11-18 11:55:10
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]

Secondary references:

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]
72823 A. P. van Viersen and F. Lerouge. 2020. Cornuproetine (proetide) trilobites with nine thorax segments from the Devonian of Morocco, Germany and the Czech Republic. Palaeontologische Zeitschrift 94:227-254 [W. Kiessling/M. Krause/O. Alfaro]