Eutatus pascuali Krmpotic et al., 2009

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 : 9

publication ID

https://doi.org/10.1186/s13358-023-00265-7

persistent identifier

https://treatment.plazi.org/id/96755D53-072C-FFB3-70D5-FACFFAF71D3B

treatment provided by

Felipe

scientific name

Eutatus pascuali Krmpotic et al., 2009
status

 

Eutatus pascuali Krmpotic et al., 2009

Referred material: Incomplete cranium bearing seven right molariforms and eight left molariforms, three undetermined bone fragments, two osteoderm from the pelvic buckler and nine osteoderms from the mobile bands of the dorsal shield: PIMUZ A/ V 419 ( Figs. 3 View Fig , 4 View Fig ); one incomplete right femur: PIMUZ A/ V 4094.

Comment: Members of the Eutatini are easily recognized by their molariforms composed of three distinct dentine layers and the presence of large hair foramina on the dorsal shield osteoderms ( Krmpotic et al., 2009). Among genera of this clade, only the genus Eutatus is known from the Pleistocene of the Pampean region. Following a recent revision ( Krmpotic & Scillato-Yané, 2007), the species E. pascuali is known to occur only in the Ensenadan while E. seguini Gervais, 1867 is typically Lujanian ( Krmpotic et al., 2009). A new species from the Lujanian was also recently described, E. crispianii Brambilla & Ibarra, 2017 , but this species shows foramina on the exposed surface larger than the hair foramina, which is not the case in our specimens. PIMUZ A/V 419 exhibits two pelvic shield osteoderms where the central figure is particularly large, with foramina on the exposed surface of a small size. Te hair foramina are at a minimum number of five. Tese slight variations on these two osteoderms suggest an assignment to E. pascuali rather than E. seguini . In PIMUZ A/V 4094, there are no osteoderms available, which limits the determination. Te relatively high position of the third trochanter on the femur is consistent with the assignment of this specimen to E. pascuali ( Krmpotic et al., 2009) . It is noteworthy that the cranium of PIMUZ A/V 419 shows a significant restored portion and there was probably an error in the reconstruction of this part of the cranium for this specimen.

PIMUZ

Palaontologisches Institut und Museum der Universitat Zurich

V

Royal British Columbia Museum - Herbarium

Kingdom

Animalia

Phylum

Chordata

Class

Mammalia

Order

Cingulata

Family

Dasypodidae

Genus

Eutatus

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