Archaeomylodon Brambilla & Ibarra, 2018

Verger, Kévin Le, 2023, Xenarthrans of the collection of Santiago Roth from the Pampean Region of Argentina (Pleistocene), in Zurich, Switzerland, Swiss Journal of Palaeontology (3) 142 (1), pp. 1-39 : 24

publication ID	https://doi.org/10.1186/s13358-023-00265-7
persistent identifier	https://treatment.plazi.org/id/96755D53-0733-FFAC-733A-FC09FBBB191E
treatment provided by	Felipe
scientific name	Archaeomylodon Brambilla & Ibarra, 2018
status

Treatment

Archaeomylodon Brambilla & Ibarra, 2018 a Archaeomylodon sampedrinensis Brambilla & Ibarra,

2018a

Referred material: Tree cranial fragments, one corresponding to the left posterior part of the basicranium and two undetermined: PIMUZ A/ V 4140 ( Fig. 10 View Fig ).

Comment: Two of the three fragments available for PIMUZ A/V 4140 do not bear diagnostic elements, while the third fragment corresponds to a part of the occiput. Te latter exhibits a well-marked occipital condyle of similar size to that of Lestodon (see above). Te preserved part of the occiput seems to induce a complete subcircular shape of the occipital region, which is more consistent with A. sampedrinensis than with other Mylodontinae (Brambilla & Ibarra, 2018a). Te most diagnostic feature is indicated by the distance between the occipital condyle and the hypoglossal foramen. Similar to A. sampedrinensis , this distance is almost twice the distance found in other Mylodontinae (Brambilla & Ibarra, 2018a). I therefore propose the reassignment of PIMUZ A/V 4140 to A. sampedrinensis . While the specimen is particularly incomplete, PIMUZ A/V 4140 has the major interest of being one of the few known occurrences of this mylodont in the Pampean Region.