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in Samathi & Suteethorn, 2022 Illustration: Kmonvish Lawan |
Abstract
We describe iguanodontian post-cranial remains, including a cervical vertebra, two dorsal vertebrae, five caudal vertebrae, a metacarpal, right femur, tibia and fibula, and a small femur possibly from a juvenile of the same taxon. This is the first record of a juvenile iguanodontian co-occurring with an adult from Thailand. The material was recovered from the Lower Cretaceous Khok Kruat Formation of Khok Pha Suam, Ubon Ratchathani Province, north-eastern Thailand. It was reconstructed to belong to a non-hadrosauriform styracosternan. This study provides the first osteological description of iguanodontian post-cranial material in Thailand and its potential autapomorphic features. However, whether it belongs to a previously named taxon or represents a new one cannot be assessed yet and must await further discovery.
Keywords: Reptilia, Iguanodontia, Khok Pha Suam, Early Cretaceous, Thailand
Adun Samathi and Suravech Suteethorn. 2022. New Materials of Iguanodontians (Dinosauria: Ornithopoda) from the Lower Cretaceous Khok Kruat Formation, Ubon Ratchathani, Thailand. Zootaxa. 5094(2); 301–320. DOI: 10.11646/zootaxa.5094.2.5
