Peligrotherium

Peligrotherium is an extinct meridiolestidan mammal from the Paleocene of Patagonia, originally interpreted as a stem-ungulate (though it did co-exist with early meridiungulates). Its remains have been found in the Salamanca Formation.[1] It was a dog-sized mammal, among the largest of all non-therian mammals (as well as the largest South American Paleocene mammal[2]). It is a member of Mesungulatoidea, a clade of herbivorous meridiolestidans with molars that had rounded (bunodont) cusps.[3][4]

Peligrotherium
Temporal range: Early Paleocene (Peligran)
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Life restoration and 3D model of skull and mandibles
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Clade: †Meridiolestida
Clade: †Mesungulatoidea
Family: †Peligrotheriidae
Bonaparte et al., 1993
Genus: †Peligrotherium
Bonaparte et al., 1993
Species:
†P. tropicalis
Binomial name
†Peligrotherium tropicalis
Bonaparte et al., 1993

References
  1. Peligrotherium at Fossilworks.org
  2. Rougier, Guillermo, Martinelli, Agustin, Forasiepi, Analía M., Mesozoic Mammals from South America and their Forerunners, ISBN 978-3-030-63862-7
  3. Tony Harper; Ana Parras; Guillermo W. Rougier (2018). "Reigitherium (Meridiolestida, Mesungulatoidea) an enigmatic Late Cretaceous mammal from Patagonia, Argentina: morphology, affinities, and dental evolution". Journal of Mammalian Evolution. in press. doi:10.1007/s10914-018-9437-x.
  4. Harper, Tony; Adkins, Caleb; Rougier, Guillermo (2022). "Reconstructed masticatory biomechanics of Peligrotherium tropicalis, a non-therian mammal from the Paleocene of Argentina". Acta Palaeontologica Polonica. 67. doi:10.4202/app.00912.2021.


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