Z-F05. Zagora, Beni Zoli (Ordovician of Morocco)

Also known as Oued Beni Zoli, Z-F5

Where: Anti-Atlas, Morocco (30.5° N, 5.9° W: paleocoordinates 74.1° S, 108.0° E)

• coordinate stated in text

• local area-level geographic resolution

When: Araneograptus murrayi graptolite zone, Upper Member (Fezouata Formation), Tremadocian (485.4 - 477.7 Ma)

• Was Floian-Dapingian.

•Ebbestad & Lefebre: "The detailed, revised biostratigraphic framework produced by Martin et al. (in press) based on both graptolites and acritarchs confirms the late Tremadocian age (A. murrayi biozone) for low-diversity assemblages occurring in the lower part of the succession (between 240 and 300 m above the contact with underlying Cambrian strata). It also confirms that high-diversity faunas are found predominantly in the upper part of the Fezouata Shale, either in latest Tremadocian (H. copiosus biozone: Z-F0) or in early Floian deposits (Z-F24 and Z-F26). However, extensive field work in the Lower Ordovician of Zagora area (2012-2014, ANR project RALI) clearly suggests a late Tremadocian age (A. murrayi Biozone) for the Z-F5 assemblage. The Z-F5 fauna is thus older than all other high-diversity Early Ordovician."

• group of beds-level stratigraphic resolution

Environment/lithology: offshore; lithified, concretionary, nodular, green siltstone and lithified limestone

• green siltstone and thin limestone beds

Size classes: macrofossils, mesofossils

Preservation: mold/impression

Primary reference: B. Kröger and B. Lefebvre. 2012. Palaeogeography and palaeoecology of early Floian (Early Ordovician) cephalopods from the Upper Fezouata Formation, Anti-Atlas, Morocco. Fossil Record 15(2):61-75 [B. Kröger/B. Kröger]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 166727: authorized by Björn Kröger, entered by Björn Kröger on 24.02.2015, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Trilobita
 Corynexochida - Leiostegiidae
Agerina sp. Tjernvik 1956 trilobite
 Phacopida - Dalmanitidae
Toletanaspis sp. Rabano 1989 trilobite
 Phacopida - Homalonotidae
Colpocoryphe sp. Novak and Perner 1918 trilobite
 Phacopida - Calymenidae
Prionocheilus sp. Rouault 1847 trilobite
 Phacopida - Bathycheilidae
 Asaphida - Asaphidae
Asaphellus aff. jujuanus1 Harrington 1937 trilobite
 Asaphida - Raphiophoridae
 Ptychopariida - Eulomidae
Euloma sp. Angelin 1854 trilobite
 Lichida - Odontopleuridae
Selenopeltis sp. Hawle and Corda 1847 trilobite
 Harpetida - Harpididae
Harpides sp. Beyrich 1846 trilobite
 Sachitida - Siphogonuchitidae
Calvapilosa kroegeri2 Vinther et al. 2017
Paragastropoda
 Mimospirida - Onychochilidae
Pelecyogyra fezouataensis n. gen. n. sp.1
Pelecyogyra fezouataensis n. gen. n. sp.1 Ebbestad and Lefebvre 2015
Rostroconchia
 Ribeirioida - Technophoridae
Ribeiria sp. Sharpe 1853
Bivalvia
 Modiomorphida - Modiomorphidae
 Cardioni - Babinkidae
Babinka sp. Barrande 1881 clam
 Cardioni - Coxiconchiidae
"Coxiconcha sp." = Coxiconchia
"Coxiconcha sp." = Coxiconchia Babin 1966 clam
Gastropoda
 Euomphalina - Lesueurillidae
Lesueurilla sp. Koken 1898 snail
 Bellerophontida -
Thoralispira sp. Horný and Vizcaïno 1995 snail
Tergomya
 Cyrtonellida - Carcassonnellidae
Carcassonnella sp. Horný and Peel 1996
Cephalopoda
 Dissidocerida - Polymeridae
Polymeres sp. Murchison 1839
Graptolithina
 Graptoloida - Didymograptidae
Baltograptus geometricus Tornquist 1901 graptoloid
Baltograptus vacillans Tullberg 1880 graptoloid
Rhombifera
 Glyptocystitoida - Macrocystellidae
"Macrocystella bohemica" = Macrocystella bohemicus
"Macrocystella bohemica" = Macrocystella bohemicus Barrande 1867
Eocrinoidea
  -
Soluta
  - Plasiacystidae
Plasiacystis mobilis1 Prokop and Petr 2004
Stylophora
 Cornuta -
 Mitrata - Kirkocystidae