A review of vertebrate body fossils from the Korean Peninsula and perspectives

Choi, Seung Hyun; Lee, Yuong‐Nam

doi:10.1007/s12303-017-0040-6

Cited by 19 publications

(19 citation statements)

References 127 publications

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“…South Korean materials were excavated from the Early Cretaceous Sihwa Formation in Hwaseong City (Type A in Lee ; Kim et al . ; Choi & Lee , fig. 2) and the Late Cretaceous Wido Volcanics of Wi Island, North Jeolla Province (Gihm et al .…”

Section: Methodsmentioning

confidence: 99%

Electron backscatter diffraction (EBSD) analysis of maniraptoran eggshells with important implications for microstructural and taphonomic interpretations

2019

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Electron backscatter diffraction (EBSD) is a useful tool for gathering crystallographic information from carbonate biominerals because it maps out the orientation of crystal grains very precisely. EBSD has become popular in invertebrate palaeontology but its application in vertebrate palaeontology remains limited. However, the study of fossil eggshells is a field where EBSD has wide potential applicability and provides a quantitative approach to fossil eggshell research as well as new qualitative data. Here we analyse fossil and extant maniraptoran dinosaur eggshells using EBSD analysis emphasizing four different aspects. The mapping imaging clarifies previously ambiguous characters such as squamatic ultrastructure and allows a more objective evaluation of avian and non-avian maniraptoran eggshell. In particular, our results imply that the presence of an external zone in the manirpatoran eggshell is not diagnostic of avian eggshell. EBSD analysis can be also used for differentiating true pore canals from cracks in the eggshell radial section, thereby determining the biological genuineness or otherwise of a pore-like structure. Finally, the misorientation angle distribution of the material shows a clear dichotomy that may reflect reproductive brooding strategy, although further studies on contact incubation of palaeognaths and neognaths are needed to confirm this.

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Section: Methodsmentioning

confidence: 99%

Electron backscatter diffraction (EBSD) analysis of maniraptoran eggshells with important implications for microstructural and taphonomic interpretations

2019

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“…Mongolian Geoscientist dinosaur biogeography and evolution, especially for the sediments that lack articulated skeletons or isolated, well preserved bony elements. Despite the abundance of ichnofossils such as eggs or footprints, most dinosaur body fossils that have been reported from the Korean Peninsula represent isolated, incomplete or fragmentary materials that are not yet widely reported to the international paleontological community (Lee, 2003;Choi and Lee, 2017). Among these fossils, isolated theropod teeth are currently only reported from the Hasandong Formation (Aptian-Albian) that is distributed in the southeastern part of the Korean Peninsula (Choi and Lee, 2017), and previous taxonomic identifications on most of these fossils were made through preliminary descriptions at the times when phylogenetically informative variations in theropod teeth were poorly described.…”

Section: Original Articlementioning

confidence: 99%

“…However, it is now known that laterally compressed crown morphology is not unique for the megalosaurid teeth (Hendrickx et al, 2015a), and the identifications of "Prodeinodon" teeth as megalosaurid theropods are highly doubtful (e.g., Averianov and Skutschas, 2009). Based on these factors, some authors have referred KS 7001 as an Indeterminate Theropoda with unavailable further taxonomic resolution (Carrano et al, 2012;Choi and Lee, 2017). However, it has been recently shown that although most theropod teeth may not be diagnositic to the species level, they possess several important anatomical characters that can be used for assigning them to at least several certain taxonomic levels (e.g., family-level clade; Hendrickx et al, 2019).…”

Section: Original Articlementioning

confidence: 99%

“…SHRIMP and LA-MC-ICPMS U-Pb analyses provide an age between 118.0 ± 2.6 Ma (Upper Aptian) for the Hasandong Formation (Lee et al, 2018), and molluscan faunas indicate the age about Aptian to Albian (Yang, 1982). Numerous vertebrate fossils have been reported from the formation, including fish, turtles, pterosaurs, and dinosaurs (Choi and Lee, 2017).…”

Section: Geological Backgroundmentioning

confidence: 99%

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A Carcharodontosaurid tooth from the Hasandong Formation (Lower Cretaceous) of South Korea

Yun

2020

Mong. geosci.

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A large tooth of theropod dinosaur that was recovered from the Hasandong Formation (Lower Cretaceous; Aptian-Albian) in Daedo island, Hadong Couty, South Gyeongsang Province of South Korea is redescribed. Although the tooth was misidentified as a "Prodeinodon"-like megalosaurid theropod at the first time, detailed comparisons with known theropod dentition anatomy strongly indicate that this tooth belongs to an Acrocanthosaurus-like basal carcharodontosaurid theropod. This referral is supported by its combination of large size, ovoid-shaped cervix outline, mesial carina that does not reach the cervix, labially displaced distal carina and large number of denticles. This tooth is different from other carcharodontosaurid teeth from the same formation in several anatomical aspects (e.g., smaller overall size, presence of transverse lines adjacent to the distal carina, presence of interdenticular sulci in distal carina, denticle densities, crown basal ratio), indicating that carcharodontosaurid diversity in the Early Cretaceous of Korea could have been higher, although these differences may represent positional or individual variations. The presence of Acrocanthosaurus-like theropod teeth (e.g., "Prodeinodon", "Wakinosaurus") from early Cretaceous deposits (Valanginian-Cenomanian) of South Korea, Japan, Mongolia and China indicates that North American Acrocanthosaurus atokensis possibly represents a form that immigrated from the Asia.

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“…The journal's regular reviewing process was applied to all submitted manuscripts and the accepted papers are included in this special issue. Topics include reviews of paleontological studies in Korea such as trilobites by Choi and Park (2017) and vertebrate body fossils by Choi and Lee (2017). An overview of the tectonic evolution of Precambrian massifs is provided by Cho et al (2017).…”

mentioning

confidence: 99%

Editorial: Special issue to celebrate the 20th anniversary of Geosciences Journal: Geosciences research in Korea and beyond

Lee

2017

Geosci J

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A review of vertebrate body fossils from the Korean Peninsula and perspectives

Cited by 19 publications

References 127 publications

Electron backscatter diffraction (EBSD) analysis of maniraptoran eggshells with important implications for microstructural and taphonomic interpretations

Electron backscatter diffraction (EBSD) analysis of maniraptoran eggshells with important implications for microstructural and taphonomic interpretations

A Carcharodontosaurid tooth from the Hasandong Formation (Lower Cretaceous) of South Korea

Editorial: Special issue to celebrate the 20th anniversary of Geosciences Journal: Geosciences research in Korea and beyond

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