Sangão (Holocene of Brazil)

Also known as site RS-S-327

Where: Rio Grande do Sul, Brazil (29.8° S, 50.6° W: paleocoordinates 29.8° S, 50.5° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Botucatu Formation, Holocene (0.0 - 0.0 Ma)

• Hadler et al. 2008: C14 datings indicate that the sequence integrated for both sites represents the interval Early Holocene (9,400 years BP) – Late Holocene (3,730 years BP; see Table 1).

• group of beds-level stratigraphic resolution

Environment/lithology: cave; sandstone

• Hadler et al. 2008: Both sites are rock shelters eroded in the sandstone of the Botucatu Formation (Mentz-Ribeiro & Ribeiro, 1999; Dias, 2003).

Size class: macrofossils

Collection methods: Hadley et al. 2008: The material from Garivaldino site is deposited in the UNISC, and that from Sangão site is at MARSUL.The excavations at the Garivaldino site were performed at arbitrary levels at 10 cm intervals, comprising twenty-three levels (Dias & Jacobus, 2003), and at the Sangão site at 5 cm intervals for a total of thirteen arbitrary levels (Dias, 2003). The specimens received compound number (e.g., 1754- 4); the first one (in this case, 1754) indicates the level into a grid from where it was excavated, according to the institutional catalogue numeration for levels and grids. The second number (in this case, 4) indicates the specimen itself, and obeys a sequencial order into a level of a grid.

Primary reference: P. Hadler, D. H. Verzi, M. G. Vucetich, J. Ferigolo, and A. M. Ribeiro. 2008. Caviomorphs (Mammalia, Rodentia) from the Holocene of Río Grande do Sul state Brazil: Systematics and paleoenvironmental context. Revista Brasileira de Paleontologia 11(2):97-116 [P. Mannion/G. Varnham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 211630: authorized by Philip Mannion, entered by Grace Varnham on 24.07.2020

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Rodentia - Caviidae
Cavia magna Ximenez 1980 greater guinea pig
Cavia aperea Erxleben 1777 Brazilian guinea pig
 Rodentia - Ctenomyidae
Ctenomys sp. de Blainville 1826 caviomorph
 Rodentia - Echimyidae
Clyomys riograndensis Hadler 2008 spiny rat
Dicolpomys fossor Winge 1887 spiny rat
Myocastor coypus Molina 1782 coypu
Phyllomys sp. Lund 1839 Atlantic tree-rat