A proto-monsoonal climate in the late Eocene of Southeast Asia: Evidence from a sedimentary record in central Myanmar

Huang, Huasheng; Morley, Robert J.; Licht, Alexis; Dupont‐Nivet, Guillaume; Pérez-Pinedo, Daniel; Westerweel, Jan; Win, Zaw; Aung, Day Wa; Lelono, Eko Budi; Александрова, Г. Н.; Saxena, Reena; Hoorn, Carina

doi:10.1016/j.gsf.2022.101457

Cited by 8 publications

(4 citation statements)

References 87 publications

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“…Studies on different climatic proxies including stable isotope analysis of gastropod shells and mammal teeth from the Pondaung Fm. revealed however that a monsoon-like climate was already present in the Eocene (Licht et al, 2014c;Toumoulin et al, 2022;Huang et al, 2023). With our larger data set, covering some of the localities represented in the previous study by Licht et al (2014c) and more, we will try to test whether the same pattern is present.…”

Section: Introductionmentioning

confidence: 89%

Isotopic niche modelling of the Pondaung mammal fauna (middle Eocene, Myanmar) shows microhabitat differences. Insights into paleoecology and early anthropoid primate habitats

et al. 2023

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The late Middle Eocene Pondaung Fm. is a window to understand the environment and ecosystem dynamics of a past greenhouse world and the paleoenvironments where modern mammal clades such as anthropoid primates originated. Previous studies focused on the overall climate and vegetation of this Eocene habitat and provided first evidence for an early monsoon onset before the orogenesis of the Himalayan-Tibetan range. Here, we wanted to investigate how the mammal fauna used this habitat and which different ecological niches and microhabitats they occupied. We analyzed the carbonate fraction of dental enamel of a fossil mammal assemblage from various localities of the Pondaung Fm. in Myanmar. Bayesian niche modelling of the δ13C and δ18O values allowed us to quantify aspects of the ecological core niches occupied by these taxa, to calculate niche overlap and to use these data to infer directional competition potential in this mammal assemblage. Furthermore, comparison of different areas of the Pondaung Fm. revealed two different microhabitats whose distribution is consistent with existing vegetation models. Most primate taxa were found in both described environments, which gives a first indication about their ecological flexibility.

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Section: Introductionmentioning

confidence: 89%

Isotopic niche modelling of the Pondaung mammal fauna (middle Eocene, Myanmar) shows microhabitat differences. Insights into paleoecology and early anthropoid primate habitats

et al. 2023

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“…The second group (Gonideinae: Pseudodontini and Contradentini) originated in Laurasia and colonized the Burma Terrane after the collision of this tectonic block with the Sunda Plate. Available paleogeographic data indicate that this collision occurred in the Late Eocene (approximately 40-41 Ma) [99,100], although some authors propose older dating for this event [101]. A collision zone between the Burma Terrane and the western margin of the Sunda Plate (Sibumasu or Shan-Thai Terrane) may be considered an ancestral area for Indopseudodon.…”

Section: Ancient Radiations Of the Pseudodontini In Mainland Southeas...mentioning

confidence: 99%

Integrative Taxonomic Reappraisal and Evolutionary Biogeography of the Most Diverse Freshwater Mussel Clade from Southeast Asia (Pseudodontini)

Bolotov,

Konopleva,

Vikhrev

et al. 2023

Water

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Freshwater mussels belonging to the tribe Pseudodontini (Bivalvia: Unionidae: Gonideinae) play a keystone role in riverine and lacustrine environments throughout Southeast Asia. Many of them are narrowly endemic and habitat specialists, which need special conservation efforts. Unfortunately, the systematics of this group is rather poorly understood. Here, we show that Pseudodon inoscularis, the type species of the genus Pseudodon, belongs to the eastern clade of the tribe (Southeast Asia, east of the Salween Basin), and, more certainly, clusters with members of the genus Monodontina. Hence, the latter genus becomes a synonym of Pseudodon, while the subtribe Pseudodontina (=Pilsbryoconchina syn. nov.) should be used as a name for the eastern clade. In turn, the genus Indopseudodon stat. rev. and the subtribe Indopseudodontina subtr. nov. must be applied as valid names for the western clade of the Pseudodontini (Ayeyarwady to Salween). We present a revision of the genus Indopseudodon with an updated synonymy and a description of a new species, I. indawgyiensis sp. nov. We also link four species-level genetic lineages from the Mekong to available taxonomic names in the genera Pseudodon and Sundadontina (Pseudodon cambodjensis, P. vagulus, Sundadontina harmandi, and S. sulcata). Based on morphological features, we revise the taxonomic position of several recent and fossil species that were traditionally placed in the Pseudodontini and transfer them to the genera Parvasolenaia, Pseudodontopsis, Ptychorhynchus, Simpsonasus nom. nov. (a new name for Nasus Simpson, 1900) (Gonideinae: Gonideini), Pseudobaphia (Unioninae: Unionini), Balwantia and Lamellidens (Parreysiinae: Lamellidentini).

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“…Journal Pre-proof al., 2020), floristic composition (Huang et al, 2021), climate and sequence biostratigraphy (Huang et al, 2023).…”

Section: J O U R N a L P R E -P R O O Fmentioning

confidence: 99%

“…We compare these fossil pollen with the pollen in the extant genera of Sapindaceae and (para)syncolporate fossil pollen formgenera to discuss its taxonomic position. We further seek to unravel its source paleoecology by comparing its distribution in relation to paleoecological and systems tract interpretation as presented in Huang et al (2023).…”

Section: Introductionmentioning

confidence: 99%

Grimmipollis burmanica gen. et sp. nov.: New genus of the soapberry family (Sapindaceae) from the late Eocene of central Myanmar

Huang

Morley

Ham

et al. 2023

Review of Palaeobotany and Palynology

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A proto-monsoonal climate in the late Eocene of Southeast Asia: Evidence from a sedimentary record in central Myanmar

Cited by 8 publications

References 87 publications

Isotopic niche modelling of the Pondaung mammal fauna (middle Eocene, Myanmar) shows microhabitat differences. Insights into paleoecology and early anthropoid primate habitats

Isotopic niche modelling of the Pondaung mammal fauna (middle Eocene, Myanmar) shows microhabitat differences. Insights into paleoecology and early anthropoid primate habitats

Integrative Taxonomic Reappraisal and Evolutionary Biogeography of the Most Diverse Freshwater Mussel Clade from Southeast Asia (Pseudodontini)

Grimmipollis burmanica gen. et sp. nov.: New genus of the soapberry family (Sapindaceae) from the late Eocene of central Myanmar

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