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Kostensuchus atrox

After a long wait, the new crocodyliform discovered in the Chorrillo Formation, about 30 km southeast of the city of El Calafate, has finally been published. Kostensuchus atrox is a new taxon that joins the family of Peirosaurids, a group of notosuchian crocodyliforms. It is a distant relative of the “Boar Crocodile” (Kaprosuchus). The material corresponds mainly to the animal’s anterior region, with a very well-preserved and articulated skull, along with cervical and dorsal vertebrae, its pectoral and pelvic girdles, and both humeri. "I want to thank @poldiego and @fernando.novas.5 for trusting me with this work and for all the valuable feedback that led to the result you see in the animation. Congratulations to the whole team, and welcome Kostensuchus atrox!"

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South America, Late Cretaceous, Kostensuchus atrox
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  • 00:45
  • 27 Aug 2025
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