alongside fossils of invertebrates

Longitud 216 mm

Su rasgo más característico era la extensa armadura dérmica que recubría gran parte de su cuerpo: placas óseas

actuando como contrapeso y estabilizador durante la locomoción

and premolars and molars with sharp cusps adapted for cutting meat

Semirostrum ceruttii Variante:Imprimado alongside fossils of invertebratesSemirostrum ceruttii was a fossil odontocete belonging to Phocoenidae, the porpoise family, known from marine Pliocene deposits in California, United States. Formally described by Racicot and colleagues in 2014, this taxon represents one of the most extraordinary forms in porpoise evolution because of its extremely elongated lower jaw, which projected far beyond the upper rostrum. Its generic name may be interpreted as half rostrum or half beak,