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First report of mammal-like tracks from the Cretaceous of North Africa (Tunisia)

2013; Elsevier BV; Volume: 42; Linguagem: Inglês

10.1016/j.cretres.2013.01.003

1095-998X

Michela Contessi,

Amphibian and Reptile Biology

Abstract This paper describes Cretaceous mammal-like tracks from southern Tunisia. The tracks, referred to the Cenomanian Kerker Member of the Zebbag Formation, are the first mammal-like footprints reported from the Cretaceous of North Africa. The good preservation of the two tracks and their distinctive morphology support their attribution to a mammalian trackmaker, although the limited available data prevents attribution to a specific ichnotaxon. Morphologically, the Tunisian tracks resemble those of modern Mustelidae, however, based on mammalian faunas in the Cretaceous of Africa, they probably have affinity with members of Multituberculate family. Theropod dinosaur and bird tracks occur on the same track-bearing layer. The sediments are interpreted as an arid tidal flat environment, suggesting that African mammals might have shared their environment with a diverse fauna of larger animals.