1. Department of Biology, Faculty of Science, Mahasarakham University, Khamriang, Kantarawichai District, Maha Sarakham 44150, Thailand,
2. Palaeontological Research and Education Centre, Mahasarakham University, Khamriang, Kantarawichai District, Maha Sarakham 44150, Thailand
3. Northeastern Research Institute of Petrified Wood and Mineral Resources, Nakhon Ratchasima Rajabhat University, Meuang, Nakhon Ratchasima 30000, Thailand,
4. Department of Geology and Palaeontology, Muséum d'Histoire naturelle de la Ville de Genève, CP 6434, 1211 Genève 6, Switzerland,