Where: Chaiyaphum, Thailand (16.3° N, 102.0° E: paleocoordinates 19.3° N, 109.3° E)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: upper Member (Nam Phong Formation), Pliensbachian to Pliensbachian (190.8 - 174.1 Ma)

• Nam Phong Formation has been dated as late Norian–Rhaetian on the basis of palynomorphs (Racey et al. 1996. Journal of Petroleum Geology 19: 5–40), although new data based on subsurface observations and palynology suggests that the formation should be split into lower and upper parts, and that the upper part may be Jurassic in age, and possibly even Late Jurassic (Racey & Goodall 2009. Geol. Soc. Lond. Spec. Publ. 315: 69-83). At outcrop, only Norian-Rhaetian palynomorphs have yet beeen recovered, and so a Late Triassic age is retained for the vertebrate remains at present

•

•Laojumpon et al. (2017) argue for an earliest Jurassic age instead for the upper part of this formation

• bed-level stratigraphic resolution

Environment/lithology: fluvial; red sandstone

Size class: macrofossils

Collected in 1998

Collection methods: quarrying, surface (in situ), mechanical,

Primary reference: E. Buffetaut, V. Suteethorn, G. Cuny, H. Tong, J. Le Loeuff, S. Khansubha, and S. Jongautchariyakul. 2000. The earliest known sauropod dinosaur. Nature 407:72-74 [M. Carrano/M. Carrano/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 48871: authorized by Matthew Carrano, entered by Matthew Carrano on 01.04.2005

Creative Commons license: CC BY (attribution)