Temporal range: Mid Miocene (Friasian-Laventan) ~15.5–11.8 Ma
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The holotype skull of H. castanedaii, in ventral view. Geological Museum José Royo y Gómez, Bogotá
Scientific classification
Domain:
Eukaryota
Kingdom:
Animalia
Phylum:
Chordata
Class:
Mammalia
Order:
†Astrapotheria
Family:
†Astrapotheriidae
Subfamily:
†Uruguaytheriinae
Genus:
†Hilarcotherium Vallejo Pareja et al. 2015[1]
Type species
†Hilarcotherium castanedaii
Species
†H. castanedaiiVallejo Pareja et al. 2015 (type)[1]
†H. miyouCarrillo et al. 2018[2]
Hilarcotherium is an extinct genus of astrapotheriid mammals that lived in South America during the Middle Miocene (Laventan). The type species is H. castanedaii, found in sediments of the La Victoria Formation, part of the Honda Group in the department of Tolima in Colombia.[1] In 2018, Carrillo et al. described a partial skull and mandible of a second species H. miyou from the Castilletes Formation in the Cocinetas Basin of northern Colombia,[2] and estimated the body weight of the animal at 6,465 kilograms (14,253 lb).[3]
^ abcVallejo Pareja, M. C.; Carrillo, J. D.; Moreno Bernal, J. W.; Pardo Jaramillo, M.; Rodriguez González, D. F.; Muñoz Duran, J. (2015). "Hilarcotherium castanedaii, gen. et sp. nov., a new Miocene astrapothere (Mammalia, Astrapotheriidae) from the Upper Magdalena Valley, Colombia" (PDF). Journal of Vertebrate Paleontology. 35 (2): e903960. Bibcode:2015JVPal..35E3960V. doi:10.1080/02724634.2014.903960. S2CID 130728894.
^ abJuan D. Carrillo; Eli Amson; Carlos Jaramillo; Rodolfo Sánchez; Luis Quiroz; Carlos Cuartas; Aldo F. Rincón; Marcelo R. Sánchez-Villagra (2018). "The Neogene record of northern South American native ungulates". Smithsonian Contributions to Paleobiology. 101 (101): iv-67. doi:10.5479/si.1943-6688.101.
Hilarcotherium is an extinct genus of astrapotheriid mammals that lived in South America during the Middle Miocene (Laventan). The type species is H. castanedaii...
Pardo-Jaramillo, M.; Rodriguez-Gonzalez, D. F.; Muñoz-Duran, J. (January 2015). "Hilarcotherium castanedaii, gen. et sp. nov., a new Miocene astrapothere (Mammalia...
Parastrapotherium (P. martiale). The skeleton remains suggests that the species Hilarcotherium miyou was even larger, with a weight of 6.456 t (7.117 short tons)....
Kraglievich 1928 Genus †Granastrapotherium Johnson & Madden 1997 Genus †Hilarcotherium Vallejo-Pareja et al. 2015 Genus †Xenastrapotherium Kraglievich 1928...
Pardo Jaramillo, M.; Rodríguez González, D.F.; Muñoz Duran, J. (2015). "Hilarcotherium castanedaii, gen. et sp. nov., a new Miocene astrapothere (Mammalia...
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