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Late Ordovician molluscs of the central and eastern Anti-Atlas, Morocco
Uppsala University, Music and Museums, Museum of Evolution.ORCID iD: 0000-0001-8769-3572
Czech Geological Survey.
Finnish Museum of Natural History, University of Helsinki, P.O. Box 44, FI-00014 Helsinki.
Departamento de Geodinámica, Estratigrafía y Paleontología, Facultad CC. Geológicas.
2019 (English)In: Geological Society Special Publication, ISSN 0305-8719, E-ISSN 2041-4927, Vol. 485Article in journal (Refereed) Published
Abstract [en]

More than 30 species of tergomyan, gastropod, bivalve and cephalopod molluscs are described fromthe Late Ordovician of central and eastern Anti-Atlas, Morocco. For the cephalopods this represents the firstsystematically known taxa of the region. Tergomyans and gastropods are most common in the more shalypart of the Lower Ktaoua Formation, while bivalves are more frequent in the sandy part of the Lower Second Bani Formation. A southern Gondwana aspect is evident for the tergomyan, gastropod and bivalve assemblages,sharing many taxa with Bohemia, while no clear signal is present for the cephalopods. The latter reflects insufficientknowledge of the fauna of large parts of these areas. The widely recognized Holopea? antiquata is transferredto the genus Radvanospira gen. nov.; other new gastropod taxa include Allossospira gen. nov.,Tritonophon grandis sp. nov., Radvanospira baniensis sp. nov. and Lophospira latilabra sp. nov. Most ofthe diverse bivalve fauna and the few cephalopods are left in open nomenclature but new taxa include thebivalve Praenucula pojetai sp. nov. and the cephalopods Wadema tattai sp. nov. and Tafadnatoceras tiouririnensegen. et. sp. nov. The Late Ordovician bivalves from Morocco are dominated by pteriomorphs andprotobranchs, inhabiting infaunal, semi-infaunal and epifaunal niches.

Place, publisher, year, edition, pages
2019. Vol. 485
Keywords [en]
Gastropods, tergomya, bivalves, cephalopods, Ordovician, Morocco
National Category
Other Earth and Related Environmental Sciences
Research subject
Earth Science with specialization in Historical Geology and Palaeontology
Identifiers
URN: urn:nbn:se:uu:diva-398903DOI: 10.1144/SP485.9OAI: oai:DiVA.org:uu-398903DiVA, id: diva2:1377288
Available from: 2019-12-11 Created: 2019-12-11 Last updated: 2019-12-11

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