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Reigomys primigenus is an extinct oryzomyine rodent known from Pleistocene deposits in Tarija Department, southeastern Bolivia. It is known from a number of isolated jaws and molars which show that its molars were almost identical to those of the living Lundomys. On the other hand, the animal possesses a number of derived traits of the palate which document a closer relationship to living Holochilus, the genus of South American marsh rats, and for this reason it was placed in the genus Holochilus when it was first described in 1996. The subsequent discoveries of Noronhomys and Carletonomys, which may be more closely related to extant Holochilus than H. primigenus is, have cast its placement in Holochilus into doubt, and it was ultimately made the type species of a separate genus, Reigomys.

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  • Reigomys primigenus (ca)
  • Reigomys (en)
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  • Reigomys primigenus is an extinct oryzomyine rodent known from Pleistocene deposits in Tarija Department, southeastern Bolivia. It is known from a number of isolated jaws and molars which show that its molars were almost identical to those of the living Lundomys. On the other hand, the animal possesses a number of derived traits of the palate which document a closer relationship to living Holochilus, the genus of South American marsh rats, and for this reason it was placed in the genus Holochilus when it was first described in 1996. The subsequent discoveries of Noronhomys and Carletonomys, which may be more closely related to extant Holochilus than H. primigenus is, have cast its placement in Holochilus into doubt, and it was ultimately made the type species of a separate genus, Reigomys. (en)
  • Reigomys primigenus és una espècie de rosegador orizomini extint conegut a partir de jaciments del Plistocè situats al departament de Tarija (sud-est de Bolívia). Se n'ha trobat diverses mandíbules i una sèrie de molars aïllades que són gairebé iguals que les de Lundomys, un parent vivent. D'altra banda, el paladar d'aquest animal presenta diversos caràcters derivats que l'acosten a Holochilus, el grup que engloba les rates palustres de Sud-amèrica. Per aquest motiu, l'espècie fou assignada al gènere Holochilus en ser descrita per primera vegada el 1996. Tanmateix, els descobriments posteriors de Noronhomys i Carletonomys, que podrien tenir una relació més estreta amb les espècies actuals de Holochilus que H. primigenus, posà en dubte la pertinença d'aquest animal a Holochilus i desembocà (ca)
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