Samathi, Adun: Theropod dinosaurs from Thailand and Southeast Asia : phylogeny, evolution, and paleobiogeography. - Bonn, 2019. - Dissertation, Rheinische Friedrich-Wilhelms-Universität Bonn.
Online-Ausgabe in bonndoc:
author = {{Adun Samathi}},
title = {Theropod dinosaurs from Thailand and Southeast Asia : phylogeny, evolution, and paleobiogeography},
school = {Rheinische Friedrich-Wilhelms-Universität Bonn},
year = 2019,
month = oct,

note = {Southeast Asia played an important role in dinosaur study during the Late Jurassic to mid-Cretaceous. Thailand is roughly in the third place in dinosaur discovery in Asia, after China and Mongolia. Nevertheless, there are few palaeontologists. Focussing on theropod dinosaurs in Southeast Asia, they mainly consist of non-maniraptoran tetanurans. They show similarity to Chinese plus Japanese theropods during the Early Cretaceous in broad systematic terms. During this time, some theropods such as spinosaurids and carcharodontosaurs were almost cosmopolitant. Whereas some theropods such as metriacanthosaurids were endemic to Europe and Asia including China and Thailand during the Middle to Late Jurassic.
In this thesis, my team and I added knowledge and updated information on theropod diversity and taxonomy in Southeast Asia. The diversity of non-avian theropods from the Khorat Plateau in northeastern Thailand is high compared with previous works.
In the Sao Khua Formation, which shows the highest theropod diversity, two new theropod taxa have been described and named. These include the basal coelurosaur Vayuraptor nongbualamphuensis gen. et sp. nov. and the basal megaraptoran Phuwiangvenator yaemniyomi gen. et sp. nov. This find suggests that the Megaraptora might originate in Southeast Asia. The problematic avetheropod Siamotyrannus has been revised and found here to be a basal coelurosaur, not an allosauroid as previous studies. This tells us that the basal coelurosaurs were probably evolved into large bodied at early stages. New phylogenetic analyses found Kinnareemimus is a basal ornithomimosaur, more basal than previously thought. Postcranial materials of a spinosaurid from the Phu Wiang Mountain, Khon KaenProvince, which might belong to Siamosaurus, have been described. A juvenile theropod from the Phu Wiang Mountain has been reported and described for the first time. Several theropod fragmentary materials from Thailand have been re-studied and discussed.
In the Phu Kradung Formation, a new metriacanthosaurid (sinraptorid), which is being described by Chanthasit and team, was briefly mentioned here.
In the Khok Kruat Formation, a yet unnamed and undescribed spinosaurid from Thailand has been preliminary studied here. We found that it differs from the spinosaurid from Laos, suggested that it could be a new taxon. A new carcharodontosaur, which is being described by Chokchaloemwong and team, was briefly mentioned here.
Furthermore, theropod materials in Southeast Asia including Myanmar, Laos, and Malaysia, as well as southern China, have been here discussed. The supposed to be a ceratosaur Camarillasaurus from the Early Cretaceous of Spain was found here to be a spinosaurid, not a ceratosaur as in the original study, adding number of spinosaurid taxa into the Iberian Peninsula. Finally, a tibial fragment of a spinosaurid has been identified and studied. It was concluded to belong to the subclade Spinosaurinae and shows some level of aquatic adaptation.},

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