Exceptional specimen of ornithischian dinosaurs from Thailand. Stegosaurid vertebra (A. SM2011-1-001), Phu Noi neornithischian left dentary (B. PRC149), Phu Noi neornithischian articulated skeleton (C. PRC150), Dan Luang neornithischian left femur (D. SM2016-1-081), Psitacosaurus indet. Right femur (E. SM2016-1-080), Psitacosaurus sattayaraki right dentary (F. SM2016-1-163), Khok Pha Suam iguanodontian dorsal vertebra (G. SM2021-1-113), Khok Pha Suam iguanodontian left femur (H. SM2021-1-118), Siamodon nimngami left maxilla (I. PRC-4), Ratchasimasaurus suranareae left dentary (J. NRRU-A2064), Sirindhorna khoratensis left maxilla (K. NRRU-A2048), Sirindhorna khoratensis right dentary (L. NRRU3001-167); A and G in anterior view; B–D, and H–J in lateral view; E, F and L in medial view. Scale bars: 10 cm (A, C–E, G–L); 5 cm (B, F).