2026-10-14T05:04:44Z https://api.figshare.com/v2/oai

oai:figshare.com:article/33805463 2026-09-15T16:14:07Z category_24 category_272 category_39 category_734 category_135 portal_87 item_type_3 month_year_09_2026

Sauropod teeth from the Khorat Group of Thailand suggest the faunal replacement of sauropod dinosaurs across the Late Jurassic–Early Cretaceous Wongwech Chowchuvech (24944765) Sita Manitkoon (16806617) Phornphen Chanthasit (4841235) Chatchalerm Ketwetsuriya (24944768) Evolutionary Biology Environmental Sciences not elsewhere classified Ecology Biological Sciences not elsewhere classified Computational Biology Sauropoda Mamenchisauridae Brachiosauridae Somphospondyli Diplodocoidea Márton Rabi, Senckenberg Forschungsinstitut und Naturmuseum Frankfurt am Main, Germany <p>Sauropod teeth are among the most abundant vertebrate fossils recovered from the Upper Jurassic to Lower Cretaceous Khorat Group of Thailand. However, their taxonomic and palaeoecological significance has not previously been examined in detail. This research presents the first comprehensive taxonomic identification of isolated sauropod teeth from several localities across the Khorat Plateau in Northeastern and Eastern Thailand. Based on morphological analyses, these teeth were assigned to four distinct morphotypes. Additionally, multi-quantitative analyses revealed affinities with four sauropod clades: Mamenchisauridae, Brachiosauridae, Somphospondyli, and Dicraeosauridae. The taxonomic framework recovered in this study is consistent with the broader sauropod fossil record of the Khorat Group and reveals a marked faunal shift across the Jurassic–Cretaceous of Thailand. Mamenchisaurids appeared during the Late Jurassic to the earliest Cretaceous, whereas neosauropods, such as titanosauriforms and diplodocoids, became more prevalent during the Early Cretaceous. These findings suggest new evidence for a major sauropod faunal replacement event, likely driven by ecological changes affecting herbivorous dinosaurs during this crucial timeframe of the Mesozoic.</p> 2026-09-15T16:14:07Z Dataset Dataset 10.6084/m9.figshare.33805463.v1 https://figshare.com/articles/dataset/Sauropod_teeth_from_the_Khorat_Group_of_Thailand_suggest_the_faunal_replacement_of_sauropod_dinosaurs_across_the_Late_Jurassic_Early_Cretaceous/33805463 CC BY 4.0