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Polyonyx-like tracks from Middle-?Upper Jurassic red beds of Morocco: Implications for sauropod communities on southern margins of tethys

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dc.contributor.author Oukassou M.
dc.contributor.author Klein H.
dc.contributor.author Lagnaoui A.
dc.contributor.author Charrière A.
dc.contributor.author Saber H.
dc.contributor.author Gierliński G.
dc.contributor.author Lallensack J.
dc.contributor.author Hminna A.
dc.contributor.author Boumaalif A.
dc.contributor.author Oussou A.
dc.contributor.author Ouarhache D.
dc.date.accessioned 2020-01-21T20:32:48Z
dc.date.available 2020-01-21T20:32:48Z
dc.date.issued 2019
dc.identifier.issn 0031-0182
dc.identifier.uri https://dspace.kpfu.ru/xmlui/handle/net/157386
dc.description.abstract © 2019 Elsevier B.V. A new dinosaur tracksite is reported from continental red beds of the Jurassic (Late Bathonian-?Callovian) Isli Formation along the northern flank of the Aït Ali ou Ikkou Syncline of the Imilchil area, Central High Atlas, Morocco. The succession was deposited in a fluvio-lacustrine environment, and contains at least fourteen track-bearing levels. The diverse dinosaur-dominated ichnofauna includes the footprints of crocodylomorphs, pterosaurs, theropods, sauropods and ornithischians, together with numerous invertebrate traces. Here, we focus on a long sauropod trackway, which comprises nine consecutive manus-pes sets preserved as concave epireliefs. The low heteropody and asymmetry of manus prints with a large digit I (pollex) impression oriented medially, and a large triangular claw trace, which is posteriorly oriented, are characteristic of the ichnogenus Polyonyx. Different from typical Polyonyx is the narrow gauge pattern compared to the wide gauge observed in the type trackway from Portugal. Additional material from Morocco, similar to Polyonyx, comprises the trackway of a very small (?juvenile) individual found close to the main trackway, as well as a short trackway from a different locality in the Isli Formation. Our data from the Moroccan High Atlas indicates the presence of basal eusauropods in the Middle Jurassic-Early Cretaceous interval in the northwestern part of Gondwana for the first time, and suggests they inhabited a lacustrine paleoenvironment.
dc.relation.ispartofseries Palaeogeography, Palaeoclimatology, Palaeoecology
dc.subject Bathonian
dc.subject Central high atlas
dc.subject Dinosaur trackway
dc.subject Gondwana
dc.subject Imilchil
dc.subject Isli formation
dc.title Polyonyx-like tracks from Middle-?Upper Jurassic red beds of Morocco: Implications for sauropod communities on southern margins of tethys
dc.type Article
dc.relation.ispartofseries-volume 536
dc.collection Публикации сотрудников КФУ
dc.source.id SCOPUS00310182-2019-536-SID85074884535


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  • Публикации сотрудников КФУ Scopus [24551]
    Коллекция содержит публикации сотрудников Казанского федерального (до 2010 года Казанского государственного) университета, проиндексированные в БД Scopus, начиная с 1970г.

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