Abstract Predator–prey interactions shown by ichnofossils are not very frequent and the interpretation of so–called ‘terminated trackways’ can represent a good opportunity of study. Especially the behavioural tendency of some vertebrates can be confirmed. In the Lower Permian of the Valtellina area (Orobic Basin, Southalpine, North Italy) a very peculiar development of arthropod walking–trails (Dendroidichnites elegans Demathieu, Gand & Toutin–Morin, 1992 and cfr. Heteropodichnus variabilis Walter, 1983) and the presence in suspicious position of Dromopus sp. footprints, should testify a possible predation attempt from the vertebrate maker on the formers. Thus, during the Lower Permian it should be also documented that the partial predator role in the Southalpine, was occupied just by the araeoscelid trackmaker of the Dromopus. Inside the trophic pyramid, probably with the Varanopus and Camunipes ones, Dromopus’s maker occupied the opportunist consumer role. Amphisauropus latus Haubold, 1971 and A. imminutus Haubold, 1971 makers played the primary consumer role, while a true carnivore is missing.


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