Annual isotopic diet (δ 13 C) of Eremotherium laurillardi (Lund, 1842) and climate variation (δ 18 O) through the late Pleistocene in the Brazilian Intertropical Region
Bibliographic Data
| ID | 24088824 |
|---|---|
| Authors | Mário André T Dantas (0000-0002-9141-1643, Universidade Federal da Bahia, corresponding author), Verônica Santos Gomes (Universidade Federal da Bahia), Alexander Cherkinsky (0000-0002-6412-7233, University of Georgia), Hermínio Ismael De Araújo-Júnior (0000-0003-4371-0611, Universidade do Estado do Rio de Janeiro) |
| Year | 2023 |
| Volume | 115 |
| Pages | 194-201 |
| Publication date | 2023-09-01 |
| Peer Reviewed | Yes |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | Quaternary Research (JOURNAL) |
| Journal identifiers | ISSN: 0033-5894 • E-ISSN: 1096-0287 |
| Publisher | Cambridge University Press (CUP) (PUBLISHER) |
| DOI | 10.1017/qua.2023.17 |
| OpenAlex | W4376112546 |
| Language | EN |
| Citations received | 2 |
| References cited | 35 |
We inferred the annual isotopic diet (δ 13 C) of an individual of the giant ground sloth Eremotherium laurillardi found in Toca dos Ossos (Ourolândia, Bahia, Brazil) through the extension of its third inferior molar. This individual lived in the region at 40,779–39,617cal yr BP. One year of its life was recorded in a length of 67 mm in the tooth. Two years were recorded in this molariform, during which the diet and climate did not change much, and substantial precipitation occurred during the middle of the year, which is in opposition to the modern pattern. The mean carbon (μδ 13 C = −13.9 ± 1.8‰) and oxygen (μδ 18 O = 22.5 ± 2.9‰) isotopic values were similar to values for other individuals of the species found in the same cave but different from the values found in other localities of the Brazilian Intertropical Region, which allows us to suggest that this region had more precipitation and lower temperatures in comparison to today. The oxygen isotopic values found in dated fossils of E. laurillardi and from two other taxa found in the same cave ( Toxodon platensis , and Notiomastodon platensis ) could help in the understanding of the climatic variation that occurred in the region.
Archaeology · Cave · Geochemistry · Geography · Isotopes of oxygen · Physical geography · Pleistocene · Precipitation · Stalagmite · Evolution and Paleontology Studies · Geology · Geology and Paleoclimatology Research · Isotope Analysis in Ecology · Paleontology
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| Unique citing works | 2 |
|---|---|
| Citations per year | 0,67 |
| Citation span | 2023 - 2026 (4) |
| Citation velocity | current |
| Highly cited | No |
| Citation types | Neutral: 2 |