Hermenegildo Beach (Pleistocene of Brazil)

Also known as Playa Hermenegildo; Santa Vitória do Palmar

Where: Rio Grande do Sul, Brazil (33.7° S, 53.3° W: paleocoordinates 33.7° S, 53.2° W)

• coordinate stated in text

• local area-level geographic resolution

When: Late/Upper Pleistocene (0.1 - 0.0 Ma)

• The coastal plain of Rio Grande do Sul have developed the lateral juxtaposition of a depositional system of alluvial fans, and four systems of lagoon-barrier (Villwock & Tomazelli, 1995). The four lagoon-barrier systems were formed starting from four transgressive-regressive events: systems I, II and III of Pleistocene age and System IV of Holocene age. The fossils studied are associated with the deposits of the Lagoon-Barrier System III. These fossils are rolled and collected at the beach.

• group of beds-level stratigraphic resolution

Environment/lithology: lagoonal; lithology not reported

• The fossils present dark coloration, high density and carbonate cement, suggesting reworking by the marine ambient (Lopes et al., 2001). After the deposition in lagoonal ambient (probably the Lagoon III), posterior to the fossilization process, they were reworked and cemented by calcium carbonate in a marine shore environment and preserved in sandstones and carbonate in the parcels and submerged banks (foreshore and continental platform). Later, they were exposed to weathering, when there was recrystalization of the carbonate in fresh water. The fossils presently rolled in he coastline are from several source-areas that were formed of old atrand lines, and transported due to the action of present hydrodynamic processes (Buchmann, 1994, 2002)

Size class: macrofossils

Collection methods: The fossils are rolled and collected at the beach.

•The material is deposited in the Paleovertebrates Collection of Museu de Ciências Naturais da Fundação Zoobotânica do Rio Grande do Sul and Laboratório de Estratigrafia e Paleobiologia da Universidade Federal de Santa Maria.

Primary reference: C. S. Scherer, J. Ferigolo, and A. M. Ribeiro. 2007. Contribution to the knowledge of Hemiauchenia paradoxa (Artiodactyla, Camelidae) from the Pleistocene of southern Brazil. Revista Brasileira de Paleontologia 10(1):35-52 [C. Jaramillo/C. Suarez-Gomez]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 149143: authorized by Carlos Jaramillo, entered by Catalina Suarez-Gomez on 29.07.2013, edited by Evangelos Vlachos, Philip Mannion and Grace Varnham

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Testudines - Testudinidae
"Chelonoidis cf. carbonaria" = Chelonoidis carbonarius3
"Chelonoidis cf. carbonaria" = Chelonoidis carbonarius3 Spix 1824 Red-footed tortoise
Mammalia
 Artiodactyla - Camelidae
Hemiauchenia paradoxa Gervais and Ameghino 1880 camel
 Perissodactyla - Tapiridae
Tapirus cf. terrestris2 Linnaeus 1758 Brazilian tapir
MCNPV- 3515, 6968, 8085-8087, 8843, 10069
 Panameriungulata - Macraucheniidae
"Macrauchenia patachonica" = Macrauchenia patagonica4
"Macrauchenia patachonica" = Macrauchenia patagonica4 Owen 1838 placental
MCN-PV 8842, 324, 437, 7283, 8083
 Panameriungulata - Proterotheriidae
cf. Neolicaphrium recens4 Frenguelli 1921 placental
MCN-PV 6976, 8948
  - Mylodontidae
Scelidotheriinae indet.1 Ameghino 1889 edentate
MCN-PV 038 (fragment of distal portion of the left humerus)
Glossotherium robustum1 Owen 1842 edentate
MCN-PV 8247 (right tibia); MCN-PV 59, 36611 (left tibia); MCN-PV 325 (distal portion of left tibia); MCN-PV 7929 (distal portion of right tibia); MCN- PV 5716 (left astragalus); MCN-PV 6603 (right astragalus); MCN-PV 9718 (right radius)
Lestodon armatus1 Gervais 1855 edentate
MCN-PV 340 (proximal portion of left radius); MCN-PV 1927 (incomplete left radius); MCN-PV 5708 (right tibia); MCN-PV 5705, 5707, 5709 (distal portions of right tibiae); MCN-PV 5711, 9685 (distal portions of left tibiae); MCN- PV 5719, 5720, 5721, 5722, 5723, 6065, 6201, 7928, 8653, 9652, 9655, 9656, 9657 (left astragali); MCN-PV 5715, 5717, 6899, 9654 (right astragali)