보성 비봉리 공룡알 화석지에서 발견된 거대 포식 도마뱀류(왕도마뱀형류, 유린류)에 대한 연구 = Evidence of large predatory lizards (Varanoidea, Squamata) from the Boseong Bibong-ri Dinosaur egg site, South Korea

다국어 초록 (Multilingual Abstract)

Two non-marine reptile specimens, KDRC-BB4 and KDRC-BB5, were previously collected by the research team of Chonnam National University, Korea Dinosaur Research Center, during the excavation of the Boseong Bibong-ri Dinosaur egg site. After the excavation, the two fossil specimens were misclassified, KDRC-BB4 as testudine and KDRC-BB5 as crocodylia. New morphological study results (this thesis) clearly shows that these specimens are Varanoids. Specimen KDRC-BB4 features some characters of the clade Helodermatidae such as: absence of palatine teeth, absence of pterygoid teeth, absence of a dentary shelf, and presence of scapulocoracoid. Specimen KDRC-BB5 features "modified pleurodont" dentition, a character that defines the clade Monstersauria. The specimen also share some similar morphological characters of other monstersaurian species such as long low facial process, long retracted anterior narial margin, anteromedial flange of maxilla extending toward the midline, trenchant teeth spaced in weak pleurodonty with plicidentine at the base. Since the two lizard specimens were discovered from a dinosaur nesting site, it is possible to think that these predatory lizards may have preyed upon the eggs of dinosaurs. Also, both specimens are the first lizard fossils to be reported in Korea.

목차 (Table of Contents)

• Contents ⅰ
• List of Figures ⅲ
• List of Tables ⅷ
• Abstract ⅸ
• 1. Introduction 1
• 2. General Information 4
• A. Location 4
• B. Geological settings 6
• C. Fossil discoveries 9
• D. Paleoenvironment 12
• 3. Methods 13
• A. Fossil preparation 13
• B. Reclassification 15
• 4. Systematic Paleontology 18
• A. Helodermatid 18
• 1) Material 18
• 2) Locality and horizon 18
• 3) Definition 18
• 4) Diagnosis 21
• 5) Description 21
• B. Monstersaur 33
• 1) Material 33
• 2) Locality and horizon 33
• 3) Definition 33
• 4) Diagnosis 33
• 5) Description 35
• 5. Discussion 43
• 6. Conclusions 46
• References 48
• Abstract (in Korean) 59
• Acknowledgement 60
• AppendixⅠ. Classification of Squamata 62
• A. General information of Squamata 62
• B. Classification and general systematic description 63
• AppendixⅡ. Abbreviation 100