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All Journal REINWARDTIA Jurnal Abdi Insani Berita Sedimentologi Bulletin of Geology
MIKA RIZKI PUSPANINGRUM, MIKA RIZKI
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Journal : Berita Sedimentologi

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Palaeontological surveys in Central Sumatra and Bangka Louys, Julien; Zaim, Yahdi; Rizal, Yan; Price, Gilbert J.; Aswan, Aswan; Puspaningrum, Mika Rizki; Smith, Holly; Hascaryo, Agus Tri
Berita Sedimentologi Vol 47, No 3 (2021)
Publisher : Ikatan Ahli Geologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (618.858 KB) | DOI: 10.51835/bsed.2021.47.3.358

Abstract

We report on results from surveys undertaken in Sumatra during 2018 and 2019. The surveys had three objectives: (1) to examine, sample, and record the extensive Quaternary fossil deposits from caves in West Sumatra; (2) determine the potential for fluvial deposits in Riau and Jambi provinces; and (3) relocate the fossil proboscidean remains reported from Bangka Island. Our surveys produced several significant results. We mapped three important Padang Highland caves, Ngalau Lida Ajer, Ngalau Sampit, and Ngalau Gupin, locating and sampling the main fossil deposits in each, as well as recording additional caves in the region. Our surveys of the fluvial systems in central-west Sumatra did not reveal any vertebrate Pleistocene deposits but did yield Mio-Pliocene trace fossils. Finally, we relocated elephant fossils from Bangka, but no in situ vertebrate remains could be found. These finds add important new data to the geological history of Sumatra.
Isotopic reconstruction of Proboscidean habitats and diets on enigmatic island of Sulawesi Puspaningrum, Mika Rizki; Chivas, Allan R.; Kurniawan, Iwan; Wibowo, Unggul P.; Zaim, Yahdi; van den Bergh, Gerrit D.
Berita Sedimentologi Vol 47, No 3 (2021)
Publisher : Ikatan Ahli Geologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (335.695 KB) | DOI: 10.51835/bsed.2021.47.3.364

Abstract

Sulawesi is known for its complex geological and biogeographic history, which is reflected in their extinct and extant faunal assemblage. Evidence of oldest terrestrial fauna in Sulawesi was found in the Early Pleistocene sediment and evolved since then. Despite being mostly isolated from the mainland Southeast Asia; four successive Proboscidean taxa have been found from the southern part of the island. The four taxa are: Stegoloxodon celebensis, Stegodon sompoensis, Stegodon sp. B, and cf. Palaeoloxodon namadicus, in which respective taxa are included in successive faunal stages. The aim of this research is to reconstruct the diet and palaeoenvironment of these Proboscidean taxa by incorporating stable isotope analysis with the fossil faunal record, geology, and stratigraphy. Stable carbon (δ13C) and oxygen (δ18O) isotope analysis were especially used in this study. Our result suggests that Stegoloxodon celebensis and Stegodon sompoensis were flexible feeders and were able to adapt to different niches, from closed canopy forest to open vegetation, while the diets of Stegodon sp. B, Celebochoerus heekereni and cf. Palaeoloxodon namadicus suggest that they were more specialized.
Co-Authors AFIATRI PUTRIKA, AFIATRI Agus Tri Hascaryo, Agus Tri Aswan Aswan Azharelfa, Salwa Chivas, Allan R. Eny Yuniati FADZILAH AG. KANAK, FADZILAH AG. Fauzi, Mohammad Ruly Fuad Bahrul Ulum Iwan Kurniawan KANJANA WONGKUNA, KANJANA Khadami, Faruq LESLEY C. LUBOS, LESLEY C. Louys, Julien LUONG THIEN TAM, LUONG THIEN MOHD RAWIYANI PG. HJ. SERUDIN, MOHD RAWIYANI PG. MONICA SULEIMAN, MONICA Mudinillah, Adam Musyarofah Zuhri NG AIK MIN, NG AIK Novi Luthfiyana NURLISMA JUNITA, NURLISMA Nursahara Pasaribu Price, Gilbert J. Purnomo, Maharani Rachmawati Rahmawani, Dori ROBBERT GRADSTEIN, ROBBERT SATRIYAS ILYAS Shidqi, Benyamin Perwira Simanjuntak, Truman Smith, Holly SOONTHREE KORNOCHALERT, SOONTHREE Sujatmiko, Karina Aprilia van den Bergh, Gerrit D. Wibowo, Unggul P. Yahdi Zaim Yan Rizal, Yan YONG KIEN–THAI, YONG