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.
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