Destombes Loc. 0756. Tazzarine, Tiz n'Takhrit (Ordovician of Morocco)

Where: Zagora, Morocco (30.8° N, 5.7° W: paleocoordinates 83.3° S, 77.4° E)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Upper Ktaoua Formation, Rawtheyan (455.8 - 445.6 Ma)

• Upper Ktaoua Formation. Fossils have some affinities with late Ashgill; trinucleid trilobites with upper Rawtheyan. (Changed to Upper Ktaoua by PJW 2018-08-09)

• group of beds-level stratigraphic resolution

Environment/lithology: offshore; gray mudstone

• Fossil from light grey mudstones. Formation consists mainly of grey-green arenaceous argillites interspersed with rare bands of oolitic iron or phosphatic nodules and varies in thickness from 70 m to 110 n.

Size classes: macrofossils, mesofossils

Preservation: cast, mold/impression

Reposited in the BMNH

Primary reference: M. Ruta. 1999. A new stylophoran echinoderm, Juliaecarpus milnerorum, from the late Ordovician Upper Ktaoua Formation of Morocco. Bulletin of the Natural History Museum of London (Geology) 55(2):47-79 [P. Novack-Gottshall/P. Novack-Gottshall]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 193841: authorized by Phil Novack-Gottshall, entered by Phil Novack-Gottshall on 06.06.2018, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

 Corynexochida - Illaenidae
Stenopareia sp. Holm 1886 trilobite
 Odontopleurida - Odontopleuridae
Selenopeltis sp. Hawle and Corda 1847 trilobite
 Phacopida - Acastidae
 Phacopida - Dalmanitidae
 Phacopida - Cheiruridae
"Actinopeltis sp." = Cheirurus (Actinopeltis)
"Actinopeltis sp." = Cheirurus (Actinopeltis) Hawle and Corda 1847 trilobite
 Phacopida - Homalonotidae
"Brongniartella marocana" = Brongniartella platynota marocana1, Calymenella sp.
"Brongniartella marocana" = Brongniartella platynota marocana1 Destombes 1972 trilobite
Brongniartella platynota macrocana
Calymenella sp. Bergeron 1890 trilobite
 Phacopida - Calymenidae
 Asaphida - Remopleurididae
Amphitryon sp. Hawle and Corda 1874 trilobite
 Asaphida - Dionididae
Dionide sp. Barrande 1847 trilobite
 Asaphida - Trinucleidae
Onnia sp. Bancroft 1933 trilobite
 Lichida - Lichidae
Ostracoda indet. Latreille 1802 ostracod
 Strophomenida - Sowerbyellidae
Eochonetes canaliferus Havlicek 1971
 Strophomenida - Aegiromenidae
Chonetoidea radiatula Barrande 1879
 Strophomenida - Leptostrophiidae
 Orthida - Giraldiellidae
Plumulites sp.2 Barrande 1872 scale worm
transferred from collection 20968
Bivalvia indet. Linnaeus 1758 clam
 Ostreida - Pterineidae
? Pterinea sp.2 Goldfuss 1832 oyster
transferred from collection 20968
 Nuculida - Praenuculidae
Praenucula sp.2 Pfab 1934 clam
transferred from collection 20968
 Protobranchia -
Palaeoneilo sp.2 Hall and Whitfield 1869 clam
transferred from collection 20968
Gastropoda indet. Cuvier 1797 snail
Cephalopoda indet. Cuvier 1797
 Caryocystitidacea - Echinosphaeritidae
Echinosphaerites aurantium Gyllenhaal 1772
Echinosphaerites aurantium transversalis
 Caryocystitida - Caryocystitidae
 Cornuta - Amygdalothecidae
"Juliaecarpus milnerorum n. gen. n. sp." = Nanocarpus milnerorum
"Juliaecarpus milnerorum n. gen. n. sp." = Nanocarpus milnerorum Ruta 1999
 Mitrata -
 Mitrata - Kirkocystidae
Anatifopsis sp.2 Barrande 1872
transferred from collection 20968
 Aristocystitoida - Aristocystitidae
Maghrebocystis pachytheca Chauvel 1966
Maghrebocystis pachytheca robusta and Maghrebocystis pachytheca pachytheca
Destombesia diedra
Destombesia diedra acuta
 Conulariida -
Conulariida indet. Miller and Gurley 1896 jellyfish