Tafonomía De Los Microvertebrados Del Sitio Arqueológico Cueva Tixi (Pleistoceno Tardío–holoceno Tardío), Tandilia Oriental (Provincia De Buenos Aires, Argentina)

The mutual ecogeographical range and paleoclimatic reconstruction during the Late Pleistocene-Holocene in the Pampas (Argentina) using meso and microvertebrate fossils

“…We compiled all available data information about terrestrial Pleistocene and Holocene micro and mesovertebrate fossils (under 44 kg) from the Tixi Cave site. Compilations from Albino (1999), Mazzanti and Quintana (2001, 2002), Pardiñas (2000), Quintana et al (2002), Quintana (2004, 2016), Tonni et al (1988), and subsequent articles like Luna et al (2017) and Teta and Campo (2017), were used to build the database for this study. We didn’t use the Lycalopex gymnocercus record due to it’s high vagility.…”

“…Tixi Cave is a refuge located in La Vigilancia hills within the Tandilia mountain range between 37°57′48″ W and 58°2′30″ S at 190 masl (Figure 1). The cave’s area is 40 m 2 and 1.80 m average height (Quintana, 2016). The stratigraphic sequence (Figure 2) compounds six units described by Martínez and Osterrieth (2001) and Quintana (2016), with six radiocarbon ages reported (10,375 ± 90–10,045 ± 95 C 14 , 4865 ± 65 C 14 , 3255 ± 75 C 14 , 1730 ± 80–1220 ± 75 C 14 , 715 ± 45 C 14 , and 170 ± 80 C 14 ) (Mazzanti, 1997; Tonni et al, 1988), where the last record of Eutatus seguini is in 10,375 ± 90–10,045 ± 95 C 14 and the Dusicyon avus record is in 4865 ± 65 C 14 (Mazzanti and Quintana, 1997; Prado et al, 2015).…”

“…Tixi Cave stratigraphic sequence (modified from Quintana, 2016) showing the strata where the fossil micro- and mesovertebrates were found and the respective ages of the strata. (A and C), Allo-stratigraphic units; (B and D), diatomaceous silt with lamination; (E), sandy-clayey silt with gravels and sparse blocks and the presence of lamellar clasts; (F), saulitic sandy loam with gravels and blocks.…”

“…Into the Tandilia range, there is recorded a huge diversity of Quaternary fossil vertebrates in El Abra Cave (Quintana et al, 2002), Tixi Cave (Quintana, 2016), Loberia I (Tonni, 1985), and Amalia sites (Quintana and Mazzanti, 2011). From all those sites, Tixi Cave shows one of the most diverse and numerous vertebrate fossil records in South America (Quintana, 2016). In addition, it shows two extinct taxa, the armadillo Eutatus seguini , and the carnivorous Dusicyon avus (Mazzanti and Quintana, 1997; Prado et al, 2015).…”

Micromammal taphonomy and site formation process of Nutria Mansa 1 archaeological site (Buenos Aires, Argentina)

“…In recent years, the archaeological record from the Late Pleistocene to the Late Holocene in the Pampean region has come to provide a large sample of micromammal remains. Pampean micromammal studies have addressed some major topics such as the occurrence of species in the fossil record and their relation to palaeoclimatic events, taking into account the species distribution over time from a biogeographical perspective (Abba & Vizcaíno, ; Prado & Alberdi, ), but few taphonomic studies have been developed (Acosta & Pafundi, ; Escosteguy, Salemme, & González, ; Gómez, ; Quintana, ).…”