Kinnareemimus khonkaenensis Buffetaut, Suteethorn, and Tong, 2009

Samathi, Adun, 2024, Phylogenetic position of Kinnareemimus khonkaenensis (Dinosauria: Theropoda: Ornithomimosauria) from the Lower Cretaceous of Thailand, Zootaxa 5448 (1), pp. 67-84 : 71-72

Kinnareemimus khonkaenensis Buffetaut, Suteethorn, and Tong, 2009

Material: The holotype SM-PW5A-100 consists of an incomplete left third metatarsal with the distal end and part of the shaft. The referred materials consist of metatarsals, pedal phalanges, pedal ungual phalanx, tibiae, fibula, pubis fragment, and dorsal and caudal vertebrae ( Fig. 3 , 4 ). For the description of the material, see Buffetaut et al. (2009).

Locality: Phu Wiang 5 Locality, so-called “Sum Ya Ka”, Phu Wiang Mountain, Khon Kaen Province, Thailand.

Horizon: Sao Khua Formation, Early Cretaceous, ~late Barremian (see Buffetaut et al. 2009; Samathi et al. 2019b) or late Valanginian–early Hauterivian ( Tucker et al. 2022).

Diagnosis: An ornithomimosaur with a combination of the following characters: pedal unguals ventrally flattened, with flexor fossa (as in other ornithomimosaurs), subarctometatarsalian condition of the metatarsals (as in basal ornithomimosaurs), and a triangular cross-section of the metatarsal III closer to the distal end (as in derived ornithomimids) (modified from Buffetaut et al. 2009).

Figures

FIGURE 3. Left tibia of Kinnareemimus in anterior (A, B), posterior (C), medial (D), lateral (E, F), proximal (G, H), and distal (I, J) views. Left fibula of Kinnareemimus in proximal (K) and lateral (L) views. Abbreviations: cc, cnemial crest; fc, fibular crest; ig, intercondylar groove; it, incisura tibialis; lc, lateral condyle; lm, lateral malleolus; mc, medial condyle; mm, medial malleolus. Scale bar = 10 cm.

FIGURE 4. Left metatarsals of Kinnareemimus in proximal (A, C, G, N), anterior (B, D, E, I, J), posterior (H, L), and distal (F, K, M) views. Incomplete left metatarsal III SM-PW5A-100 (E-H), mid shaft of the left metatarsal III SM-PW5A-103 (I, L, M), and distal portion of the left metatarsal III SM-PW5A-107 (J, K, N). Cross section of metatarsal III SM-PW5A-100 (G), SM-PW5A-103 (M), and SM-PW5A-107 (N). Abbreviation: bif: bifurcation of posterior ridge; elp: extensor ligament pit; nap: nonarticular platform; prid: posterior ridge; arrowhead = medial expansion. Scale bar = 5 cm.