Marl with Anarcestes lateseptatus at Dechra-Ait-Abdallah (Devonian of Morocco)

Where: Morocco (33.2° N, 5.6° W: paleocoordinates 50.5° S, 22.3° E)

• coordinate based on political unit

• local area-level geographic resolution

When: Nowakia holynensis other zone, Akrech Formation, Emsian (407.6 - 393.3 Ma)

• PJW: Was Eifelian, but Unitary Analyses makes Anarcestes lateseptatus late Emsian, which is also consistent with the Nowakia holynensis zone noted by Jell & Adrain (2002). Given area, it is probably the Akrech formation.

• formation-level stratigraphic resolution

Environment/lithology: marine; marl

• "marl"

Size class: macrofossils

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 27117: authorized by Michael Foote, entered by Michael Foote on 18.11.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

• Focus is on trilobites. Some other elements occasionally mentioned.
Tentaculita
 Nowakiida - Nowakiidae
 Nowakiida - Striatostyliolinidae
Striatostyliolina sp. Boucek and Prantl 1961
Cephalopoda
 Agoniatitida - Mimoceratidae
Gyroceratites gracilis Bronn 1835 ammonite
 Agoniatitida - Anarcestidae
Anarcestes lateseptatus Beyrich 1837 ammonite
Trilobita
 Harpetida - Harpetidae
Harpes perradiatus Richter and Richter 1943 trilobite
 Proetida - Proetidae
"Drevermannia (? Palpebralia) herrmanni" = Eopalpebralia herrmanni, "Drevermannia (? Palpebralia) pygmaea n. sp." = Erbenaspis pygmaea, "Cornuproetus (Macroblepharum) africanus" = Sculptoproetus africanus, "Cornuproetus (Macroblepharum) germanicus" = Sculptoproetus germanicus, "Cornuproetus (Piriproetus) ornatissimus" = Piriproetus (Piriproetus) ornatissimus
"Drevermannia (? Palpebralia) herrmanni" = Eopalpebralia herrmanni Richter and Richter 1943 trilobite
"Drevermannia (? Palpebralia) pygmaea n. sp." = Erbenaspis pygmaea Alberti 1969 trilobite
"Cornuproetus (Macroblepharum) africanus" = Sculptoproetus africanus Alberti 1969 trilobite
"Cornuproetus (Macroblepharum) germanicus" = Sculptoproetus germanicus Alberti 1969 trilobite
"Cornuproetus (Piriproetus) ornatissimus" = Piriproetus (Piriproetus) ornatissimus Erben 1952 trilobite
 Proetida - Tropidocoryphidae
"Cornuproetus (Tafilaltaspis) creber" = Tafilaltaspis creber
"Cornuproetus (Tafilaltaspis) creber" = Tafilaltaspis creber Alberti 1966 trilobite
 Proetida - Aulacopleuridae
"Aulacopleura (Paraaulacopleura) beyrichi" = Aulacopleura beyrichi
"Aulacopleura (Paraaulacopleura) beyrichi" = Aulacopleura beyrichi Novák 1890 trilobite
 Corynexochida - Styginidae
 Phacopida - Acastidae
Asteropyginae indet. Delo 1935 trilobite
 Phacopida - Phacopidae
Phacops (Phacops) papulatus, "Phacops (Phacops) cf. degener" = Pedinopariops degener, "Phacops (Eocryphops) termieri" = Eocryphops termieri, "Phacops (Phacops) aff. fecundus" = Ananaspis fecunda, "Phacopidella (Struveaspis) micromma" = Struveaspis micromma
Phacops (Phacops) papulatus Richter and Richter 1943 trilobite
"Phacops (Phacops) cf. degener" = Pedinopariops degener Barrande 1852 trilobite
"Phacops (Eocryphops) termieri" = Eocryphops termieri Richter and Richter 1943 trilobite
"Phacops (Phacops) aff. fecundus" = Ananaspis fecunda Barrande 1852 trilobite
"Phacopidella (Struveaspis) micromma" = Struveaspis micromma Roemer 1852 trilobite