Macanopsis plataniformis Nov Ichnosp from the Lower Cretaceous and Upper Miocene of the Iberian Peninsula

Shallow sublitoral marine facies of the Lower Cretaceous in the Iberian Ran ge (central aera, Josa, Teruel, NE Spain) and the Upper Miocene in the SW a era of the Guadalquivir Basin (Lepe-Ayamonte area, Huelva, SW Spain) have r evealed the presence of the trace fossil Macanopsis plataniformis nov. ichn osp. The most characteristic feature of this ichnospecies is the presence o f a subvertical shaft at the top ending in an elongated, slightly curved ch amber that is subhorizontal/horizontal to the bedding plane. The new ichnos pecies is interpreted as a domichnion constructed by a decapod crustacean ( probably brachyuran). Cretaceous specimens are found in carbonate facies, i n a shallow marine environment, low-to-moderate in energy. In Found contras t, Miocene specimens are typically in silt facies. The marine environment i s confined to semi-confined, of low energy, rich in organic matter with mud dy, semi-consolidated, intersively bioturbated bottom sediment. (C) Edition s scientifiques et medicales Elsevier SAS.