eesti teaduste
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SINCE 1952
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Estonian Journal of Earth Sciences
ISSN 1736-7557 (Electronic)
ISSN 1736-4728 (Print)
Impact Factor (2020): 0.789

Middle Jurassic Zoophycos and Chondrites from the Mélah Formation of Saharan Atlas, Algeria; pp. 190–198

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Fayçal Mekki, Li-Jun Zhang, Olev Vinn, Madani Benyoucef, Ursula Toom, Mohamed Bendella, Emad Bouchemla, Mustapha Bensalah, Mohammed Adaci


The ichnogenera Zoophycos and Chondrites are described for the first time from the Middle Jurassic of Algeria. The trace fossil assemblage recovered from the Mélah Formation contains seven ichnospecies (Chondrites targionii, C. ?intricatus, Zoophycos brianteus, Z. cauda-galli, Zoophycos isp. A, Zoophycos isp. B and Zoophycos isp. C), which all represent the Zoophycos ichnofacies. Chondrites and Zoophycos in the Mélah Formation were made by unknown worm-like invertebrates in a deeper offshore or a shallow bathyal environment (below storm weather wave base) and may indicate oxygen depletion within the sediment.


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