A New Monodontidae (Cetacea, Delphinoidea) from the Lower Pliocene of Italy Supports a Warm-Water Origin for Narwhals and White Whales

  title={A New Monodontidae (Cetacea, Delphinoidea) from the Lower Pliocene of Italy Supports a Warm-Water Origin for Narwhals and White Whales},
  author={G. Bianucci and Fabio Pesci and A. Collareta and C. Tinelli},
  journal={Journal of Vertebrate Paleontology},
ABSTRACT A new taxon of monodontid cetacean, Casatia thermophila, gen. et sp. nov., is here described on the basis of a partial skull from lower Pliocene (5.1–4.5 Ma) marginal-marine deposits of Tuscany (central Italy). This new taxon belongs to Monodontidae based on the presence of a medial exposure of the maxillae anterior and lateral to the external bony nares; it mainly differs from all other named monodontids by the presence of a median depression of the premaxillae anterior to the… Expand
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