Oravaichnium oualimehadjensis, a new possible bivalve repichnion from the Upper Jurassic Argiles de Saïda Formation (middle Oxfordian, Saïda Mounts, NW Algeria)
- 29 November 2021
- journal article
- research article
- Published by Schweizerbart in Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen
- Vol. 302 (2), 209-220
- https://doi.org/10.1127/njgpa/2021/1028
Abstract
A new ichnotaxon, Oravaichnium oualimehadjensis isp. nov., is here erected from greenish claystones interbedded by sandstone beds of the upper Jurassic (middle Oxfordian) Argiles de Saida Formation from the Beni Berdaa section (Takhemaret area, Saida Mounts, NW Algeria). It is a simple, hypichnial, smooth continuous burrows, which exhibit a box shape in cross section. O. oualimehadjensis is interpreted as predepositional trace fossil, produced by the locomotion activity of wedge-foot bivalves in a storm dominated shallow-marine environment. Oravaichnium oualimehadjensis constitutes the second ichnospecies of the rare ichnogenus Oravaichnium PLICKA & UHROVA, 1990 after O. hrabei, the type ichnospecies, described from Eocene flysch deposits of the Carpathians.Keywords
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