A NEW SPECIES OF LUTREOLINA THOMAS, 1910 (MARSUPIALIA, DIDELPHIDAE) FROM THE EARLY PLEISTOCENE OF THE SOUTHERN PAMPAS (BUENOS AIRES PROVINCE, ARGENTINA)
DOI:
https://doi.org/10.5710/PEAPA.24.10.2022.435Keywords:
Marsupialia, Didelphidae, Lutreolina, Argentina, Pleistocene, Buenos Aires ProvinceAbstract
We describe Lutreolina tonnii sp. nov. (Mammalia, Metatheria, Marsupialia, Didelphimorphia, Didelphidae), recovered from Early (or Early–Middle) Pleistocene deposits of the coastal cliffs near Necochea City in Buenos Aires Province, Argentina. Its holotype, a right maxillary with M1-3, indicates that it belongs to the largest species of the genus, including extinct and extant species. It also differs from other species of the genus in having more anteroposteriorly compressed protocones in the upper molars. It differs from the living species in that the maxillary-jugal contact is less horizontal in its posterior two-thirds, has a deeper ectoflexus in M3, and has a shallow but distinct internal (lingual) crest linking the bases of stylar cusps B and D in M1-3. The new species is the fourth known up to now for the South American record, and the third for the Plio–Pleistocene of the Pampean Region, thus suggesting a considerable diversity for this genus in mid-latitudes of this continent by the end of the Cenozoic Era.
References
Ameghino, F. (1889). Contribución al conocimiento de los mamíferos fósiles de la República Argentina. Actas de la Academia Nacional de Ciencias, Córdoba, 6, 1-1027.
Ameghino, F. (1904). Nuevas especies de mamíferos cretáceos y terciarios de la República Argentina. Anales de la Sociedad Científica Argentina, 56, 3-142.
Castro, M. C., Dahur, M. J., and Ferreira, G. S. (2021). Amazonia as the Origin and Diversification Area of Didelphidae (Mammalia: Metatheria), and a Review of the Fossil Record of the Clade. Journal of Mammalian Evolution 28, 583–598. https://doi.org/10.1007/s10914-021-09548-7
Desmarest, A. G. (1804). Tableau Méthodique des Mammifères in Nouveau Dictionnaire d´Histoire Naturelle, Appliquée aux Arts, Principalement à l`Agriculture, à l`Économie Rurale et Domestique: Par une Société de Naturalistes et d`Agriculteurs: Avec des Figures Tirées des Trois Règnes de la Nature - Deterville, Vol 24. Imprimerie de Crapelet, París.
Goin, F. J. (1989). Late Cenozoic South American marsupial and placental carnivores: changes in predator-prey evolution. Fifth International Theriological Congress, vol. 1 (pp. 271-272), Rome.
Goin, F. J. (1991). Los Didelphoidea (Mammalia, Marsupialia, Didelphimorphia) del Cenozoico tardío de la Región Pampeana. [Tesis doctoral, Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata]. Recuperado de http://sedici.unlp.edu.ar/handle/10915/4869
Goin, F. J., and de los Reyes, M. (2012). Contribución al conocimiento de los representantes extintos de Lutreolina Thomas, 1910 (Mammalia, Marsupialia, Didelphidae). Revista Historia Natural 1(2), 15-25.
Goin, F. J., and Pardiñas, U. F. J. (1996). Revisión de las especies del género Hyperdidelphys Ameghino, 1904 (Mammalia, Marsupialia, Didelphidae). Su significación filogenética, estratigráfica y adaptativa en el Neógeno del Cono Sur Sudamericano. Estudios Geológicos 52, 327-359.
Goin, F. J., Velázquez, C., and Scaglia, O. (1992) Orientación de las crestas cortantes en el molar tribosfénico. Sus implicancias funcionales en didelfoideos (Marsupialia) fósiles y vivientes. Revista del Museo de La Plata (N. S.) 9(57), 183-198.
Goin, F. J., Woodburne, M. O., Zimicz, A. M., Martin, G. M., and Chornogubsky, L. (2016). A Brief History of South American Metatherians . Evolutionary Contexts and Intercontinental Dispersals. Springer Earth System Sciences Series, Dordretch.
Martínez-Lanfranco, J. A., Flores, D., Jayat, J. P. and D’Elía, G. (2014). A new species of opossum, genus Lutreolina Thomas (Didelphidae), from the South American yungas. Journal of Mammalogy 95, 225–240.
Regidor, H. A., Gorostiague, M., and Sühring, S. (1999). Reproduction and Dental Age Classes of the Little Water Opossum (Lutreolina crassicaudata) in Buenos Aires, Argentina. Revista de Biología Tropical, 47, 271-272.
Rico, Y., and Bidegain, J. C. (2013). Magnetoestratigrafía de los acantilados costeros ubicados al suroeste del Río Quequén Grande, Necochea, Provincia de Buenos Aires, Argentina. Resultados preliminares. Latinmag Letters, 3, Special Issue (OB14), 1-9.
Rico, Y., Gómez Samus, M. L., and Bidegain, J. C. (2014). Magnetostratigraphy and magnetic parameters in the coastal cliffs of Buenos Aires Province. Ciencia y Tecnología de los Materiales, 4, 1-9.
Smith, P. (2008). FAUNA Paraguay. Handbook of the mammals of Paraguay, Number 17: Lutreolina crassicaudata. Recovered on July 1st, 2022 from www.faunaparaguay.com/lucrahb.html.
Stein, B. R. and Patton, J. L. (2008). Genus Lutreolina Thomas, 1910. En A.L. Gardner (Ed.), Mammals of South America, volume 1. Marsupials, xenarthrans, shrews, and bats (pp. 25–27). University of Chicago Press.
Thomas, O. (1910). The mammals of the tenth edition of Linnaeus; an attempt to fix the types of the genera and the exact bases and localities of the species. Proceedings of the Zoological Society of London, 1910, pp. 120–158.
Voss, R. S. (2022). An annotated checklist of Recent opossums (Mammalia: Didelphidae). Bulletin of the American Museum of Natural History, 455, 1-74.
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