Palaeothentidae ( Sinclair, 1906 )

Beck, Robin M. D., Voss, Robert S. & Jansa, Sharon A., 2022, Craniodental Morphology And Phylogeny Of Marsupials, Bulletin of the American Museum of Natural History 2022 (457), pp. 1-353 : 203

publication ID	https://doi.org/10.1206/0003-0090.457.1.1
DOI	https://doi.org/10.5281/zenodo.6974638
persistent identifier	https://treatment.plazi.org/id/03EFDD5D-F6F0-68E2-DAC9-FA361E51FD2D
treatment provided by	Felipe (2022-08-07 14:35:17, last updated 2024-11-26 19:59:02)
scientific name	Palaeothentidae ( Sinclair, 1906 )
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† Palaeothentidae ( Sinclair, 1906)

CONTENTS: † Acdestis and † Palaeothentes .

STEM AGE: 27.4 Mya (95% HPD: 21.3–34.7 Mya).

CROWN AGE: 19.8 Mya (95% HPD: 15.3–25.8 Mya).

UNAMBIGUOUS CRANIODENTAL SYNAPOMORPHIES: Cristid obliqua of m1 contacts metaconid (char. 169: 1→0; ci = 0.250).

COMMENTS: † Acdestis and † Palaeothentes have been included in our analysis as the two palaeothentids currently best represented by craniodental material ( Sinclair, 1906; Marshall, 1980; Goin et al., 2003; Abello, 2007; Forasiepi et al., 2014b; Engelman and Croft, 2016). Monophyly of Palaeothentidae has been consistently supported in published phylogenetic analyses ( Goin et al., 2007b, 2009a; Abello, 2013; Forasiepi et al., 2013; Rincón et al., 2015; Engelman et al., 2016; Abello et al., 2020, 2021), but our late Oligocene-early Miocene estimate for the divergence between † Acdestis and † Palaeothentes is considerably younger than the ~31 Mya estimate for this event in the a posteriori time-scaled phylogeny of Abello et al. (2020: fig. 2).

References

Abello, M. A. 2007. Sistematica y bioestratigrafia de los Paucituberculata (Mammalia, Marsupialia) del Cenozoico de America del Sur. Ph. D. dissertation, Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata, La Plata.

Abello, M. A. 2013. Analysis of dental homologies and phylogeny of Paucituberculata (Mammalia: Marsupialia). Biological Journal of the Linnean Society 109 (2): 441 - 465.

Abello, M. A., N. Toledo, and E. Ortiz-Jaureguizar. 2020. Evolution of South American Paucituberculata (Metatheria: Marsupialia): adaptive radiation and climate changes at the Eocene-Oligocene boundary. Historical Biology 32 (4): 476 - 493.

Abello, M. A., G. M. Martin, and Y. Cardoso. 2021. Review of the extinct ' shrew-opossums' (Marsupialia: Caenolestidae), with descriptions of two new genera and three new species from the Early Miocene of southern South America. Zoological Journal of the Linnean Society 193 (2): 464 - 498.

Engelman, R. K., and D. A. Croft. 2016. Evidence for sexual dimorphism in the early Miocene palaeothentid Acdestis owenii (Marsupialia: Paucituberculata). Ameghiniana 53 (4): 444 - 462.

Forasiepi, A. M., F. J. Goin, M. A. Abello, and E. Cerdeno. 2013. A unique, late Oligocene shrew-like marsupial from western Argentina and the evolution of dental morphology. Journal of Systematic Palaeontology 12 (5): 549 - 564.

Forasiepi, A. M., M. R. Sanchez-Villagra, T. Schmelzle, S. Ladeveze, and R. F. Kay. 2014 b. An exceptionally wellpreserved skeleton of Palaeothentes from the early Miocene of Patagonia, Argentina: new insights into the anatomy of extinct paucituberculatan marsupials. Swiss Journal of Palaeontology 133 (1): 1 - 21.

Goin, F. J., M. R. Sanchez-Villagra, R. F. Kay, F. AnayaDaza, and M. Takai. 2003. New palaeothentid marsupial from the middle Miocene of Bolivia. Palaeontology 46 (2): 307 - 315.

Goin, F. J., M. R. Sanchez-Villagra, A. Abello, and R. F. Kay. 2007 b. A new generalized paucituberculatan marsupial from the Oligocene of Bolivia and the origin of ' shrew-like' opossums. Palaeontology 50: 1267 - 1276.

Goin, F. J., A. M. Candela, M. A. Abello, and E. V. Oliveira. 2009 a. Earliest South American paucituberculatans and their significance in the understanding of ' pseudodiprotodont' marsupial radiations. Zoological Journal of the Linnean Society 155: 867 - 884.

Marshall, L. G. 1980. Systematics of the South American marsupial family Caenolestidae. Fieldiana Geology (new series) 5: i - viii, 1 - 145.

Rincon, A. D., B. J. Shockey, F. Anaya, and A. Solorzano. 2015. Palaeothentid marsupials of the Salla Beds of Bolivia (late Oligocene): two new species and insights into the post-Eocene radiation of palaeothentoids. Journal of Mammalian Evolution 22 (4): 455 - 471.

Sinclair, W. J. 1906. Mammalia of the Santa Cruz Beds (Marsupialia). Reports of the Princeton University Expeditions to Patagonia 4 (3): 333 - 460.