Also known as Kalasin Geopark
Where: Kalasin, Thailand (16.7° N, 102.3° E: paleocoordinates 14.1° N, 108.7° E)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Phu Kradung Formation (Khorat Group), Tithonian to Tithonian (152.1 - 139.8 Ma)
• Stratigraphically, the locality is in the lower part of the Phu Kradung Formation, which is the oldest formation of the Khorat Group. Three fossiliferous layers are recognized at the Phu Noi locality; the material described in the present work comes from a series of siltstones and mudstones of the palaeochannel, referred to as PNB by Cuny et al. (2013), approximately 10 m above the basal conglomeratic sandstone. Stratigraphically, Phu Noi is approximately 500 m below all the localities that yielded the large Basilochelys turtles (Kham Phok, Dan Luang, Huai Sai and Dan Kaeng; Tong et al. 2009a); the four sites mentioned above are situated closer to the boundary with the overlying Phra Wihan Formation (Cuny et al. 2013). The age of the Phu Kradung Formation is still debated. The studies on dinosaur remains suggested a Late Jurassic age (Buffetaut, Suteethorn & Tong, 2006; Buffetaut & Suteethorn, 2007), while the recent studies on palynology supported a basal Cretaceous age for that formation, although a latest Jurassic age cannot be ruled out for its lowermost part (Racey & Goodall, 2009).
• bed-level stratigraphic resolution
Environment/lithology: fluvial; siltstone and brown, gray, green mudstone
Size class: macrofossils
Collected in 2008-
Collection methods: quarrying, surface (in situ),
• At Phu Noi, the extensive excavations since 2008 have unearthed abundant vertebrate remains, including sharks, bony fishes, turtles, crocodiles, pterosaurs, and ornithopod, sauropod and theropod dinosaurs (Chanthasit, 2011; Cuny et al. 2011; Deesri et al. 2012).
Primary reference: H. Tong, W. Naksri, E. Buffetaut, V. Suteethorn, S. Suteethorn, U. Deesri, S. Sila, P. Chanthasit, and J. Claude. 2014. A new primitive eucryptodiran turtle from the Upper Jurassic Phu Kradung Formation of the Khorat Plateau, NE Thailand. Geological Magazine [R. Benson/R. Benson]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 157421: authorized by Roger Benson, entered by Roger Benson on 21.06.2014, edited by Jonathan Tennant, Evangelos Vlachos, Graeme Lloyd, Bryan Gee, Grace Varnham and Matthew Carrano
Creative Commons license: CC BY (attribution)
Taxonomic list
| Actinopteri | |
| Osteichthyes | |
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| Reptilia | |
"Sinraptoridae indet." = Metriacanthosauridae2
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Minimocursor phunoiensis n. gen. n. sp.4
Minimocursor phunoiensis n. gen. n. sp.4 Manitkoon et al. 2023 ornithischian PN 13-09 [= PRC 149], left dentary; PRC 150, articulated postcranial skeleton; SM2021-1-132, left pes with tibia
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Indosinosuchus kalasinensis n. sp.3 Johnson et al. 2020 marine crocodile Holotype PRC-239 (nearly complete skull and mandible, initially referred to as Indosinosuchus potamosiamensis by Martin et al. 2018)
Indosinosuchus potamosiamensis n. gen. n. sp.5 Martin et al. 2018 marine crocodile KS33-209, PRC-8, PRC-9, PRC-10, PRC-11, PRC-12, PRC-15, PRC-16, PRC-17, PRC-18, PRC-19, PRC-20, PRC-21, PRC-24, PRC-26, PRC-27, PRC-30, PRC-238, PRC-240, PRC-861, PRC-1213
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Kalasinemys prasarttongosothi n. gen. n. sp.7 Tong et al. 2019 turtle KS34-190, a skull and a shell with articulated carapace and plastron
Phunoichelys thirakhupti n. gen. n. sp. Tong et al. 2014 turtle PRC 230-237. PRC 230, an almost complete shell with articulated carapace and plastron. The carapace is nearly complete, lacking the posterior peripheral region. The plastron lacks most of the posterior lobe, and the anterior end of the anterior lobe and the left bridge are damaged. The shell is slightly crushed dorsoventrally and the carapace surface is somewhat damaged. Referred material. PRC 231, a posterior portion of carapace associated with a nearly complete plastron. The carapace is visible in dorsal view, with the fifth to eighth neurals, part of the first suprapygal, the incomplete right fourth costal and the paired fifth to eighth costals in articulation. The plastron is almost complete but disarticulated along the hyoplastron/hypoplastron suture, lacking the anterior end. PRC 232, disarticulated costals of comparable size, which are preserved together, including the right first to third costals (PRC 232-1 to 3), and the left third, fourth and sixth costals (PRC 232-4 to 6). PRC 233, an isolated scapula. PRC 234, a left seventh peripheral. PRC 235, two bridge peripherals in articulation with one another. PRC 236, a partial carapace, lacking all peripheral regions. PRC 237, a plastron disarticulated along the hyoplastron/hypoplastron suture, with the anterior lobe and both bridges damaged.
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| Amphibia | |
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Brachyopidae indet.6 Broom 1915 tetrapod KS34-1481, posterior part of a skull; KS34-1474 and KS34-1489, intercentrum.
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| Chondrichthyes | |
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