Near Battou, south of Alnif (Ordovician of Morocco)

Where: Anti-Atlas, Morocco (30.6° N, 5.1° W: paleocoordinates 80.1° S, 100.0° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Didymograptus murchisoni graptolite zone, Taddrist Formation, Darriwilian (467.3 - 458.4 Ma)

• PJW: Was initially entered as Lower Ktaoua formation, Assif bou Zeggarh member ("From lowest member of Lower Ktaoua formation"). However, the paper states Taddrist. (The age and graptolite zones both were appropriate for Taddrist and as the paper states.)

• member-level stratigraphic resolution

Environment/lithology: offshore shelf; concretionary, silty siderite and lithified siltstone

Size class: macrofossils

Preservation: concretion, replaced with siderite

Collection methods: Repositories: Collections de Paléontologie, Laboratoire de Géologie,

•Lyon 1 University, Villeurbanne, France (UCBL-FSL), the

•Natural History Museum, London, U.K. (NHMUK), the

•Non-vertebrate Paleontology Laboratory, University of Texas,

•Austin, USA (NPL), and the Bavarian State Collection of

•Palaeontology and Geology, Munich, Germany (SNSB-BSPG)

Primary reference: M. Reich, J. Sprinkle, B. Lefebvre, G. E. Rössner, and S. Zamora. 2017. The first Ordovician cyclocystoid (Echinodermata) from Gondwana and its morphology, paleoecology, taphonomy, and paleogeography. Journal of Paleontology 91(4):735-754 [V. Syverson/V. Syverson]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 186253: authorized by Valerie Syverson, entered by Valerie Syverson on 18.06.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

  - Moroccodiscidae