Search

Your search keyword '"Nonsrirach, Thanit"' showing total 24 results
Start Over Author "Nonsrirach, Thanit"
24 results on '"Nonsrirach, Thanit"'

14. A New Basal Neornithischian Dinosaur from the Phu Kradung Formation (Upper Jurassic) of Northeastern Thailand.

Author

Manitkoon, Sita, Deesri, Uthumporn, Khalloufi, Bouziane, Nonsrirach, Thanit, Suteethorn, Varavudh, Chanthasit, Phornphen, Boonla, Wansiri, and Buffetaut, Eric

Subjects
FOSSIL vertebrates, DINOSAURS, ILIUM, FOSSIL collection
Abstract

An exceptional articulated skeleton of a new basal neornithischian dinosaur, Minimocursor phunoiensis gen. et sp. nov., was discovered in the Late Jurassic Phu Kradung Formation at the Phu Noi locality, Kalasin Province, Thailand, a highly productive non-marine fossil vertebrate locality of the Khorat Plateau. It is one of the best-preserved dinosaurs ever found in Southeast Asia. Minimocursor phunoiensis gen. et sp. nov. shows a combination of both plesiomorphic and apomorphic characters resembling those of Late Jurassic to Early Cretaceous small-bodied ornithischians from China: a low subtriangular boss is projected laterally on the surface of the jugal, the brevis shelf of the ilium is visible in lateral view along its entire length, a distinct supraacetabular flange is present on the pubic peduncle of the ilium, the prepubis tip extends beyond the distal end of the preacetabular process of the ilium, and the manus digit formula is ?-3-4-3-2. The phylogenetic analysis shows that this dinosaur is among the most basal neornithischians. This study provides a better understanding of the early evolution and taxonomic diversity of ornithischians in Southeast Asia. [ABSTRACT FROM AUTHOR]

Published
2023
Full Text
View/download PDF

15. Figure 3 from: Manitkoon S, Deesri U, Lauprasert K, Warapeang P, Nonsrirach T, Nilpanapan A, Wongko K, Chanthasit P (2022) Fossil assemblage from the Khok Pha Suam locality of northeastern, Thailand: an overview of vertebrate diversity from the Early Cretaceous Khok Kruat Formation (Aptian-Albian). Fossil Record 25(1): 83-98. https://doi.org/10.3897/fr.25.83081

Author

Manitkoon, Sita, primary, Deesri, Uthumporn, additional, Lauprasert, Komsorn, additional, Warapeang, Prapasiri, additional, Nonsrirach, Thanit, additional, Nilpanapan, Apirut, additional, Wongko, Kamonlak, additional, and Chanthasit, Phornphen, additional

Published
2022
Full Text
View/download PDF

17. Supplementary material 1 from: Manitkoon S, Deesri U, Lauprasert K, Warapeang P, Nonsrirach T, Nilpanapan A, Wongko K, Chanthasit P (2022) Fossil assemblage from the Khok Pha Suam locality of northeastern, Thailand: an overview of vertebrate diversity from the Early Cretaceous Khok Kruat Formation (Aptian-Albian). Fossil Record 25(1): 83-98. https://doi.org/10.3897/fr.25.83081

Author

Manitkoon, Sita, primary, Deesri, Uthumporn, additional, Lauprasert, Komsorn, additional, Warapeang, Prapasiri, additional, Nonsrirach, Thanit, additional, Nilpanapan, Apirut, additional, Wongko, Kamonlak, additional, and Chanthasit, Phornphen, additional

Published
2022
Full Text
View/download PDF

18. Figure 4 from: Manitkoon S, Deesri U, Lauprasert K, Warapeang P, Nonsrirach T, Nilpanapan A, Wongko K, Chanthasit P (2022) Fossil assemblage from the Khok Pha Suam locality of northeastern, Thailand: an overview of vertebrate diversity from the Early Cretaceous Khok Kruat Formation (Aptian-Albian). Fossil Record 25(1): 83-98. https://doi.org/10.3897/fr.25.83081

Author

Manitkoon, Sita, primary, Deesri, Uthumporn, additional, Lauprasert, Komsorn, additional, Warapeang, Prapasiri, additional, Nonsrirach, Thanit, additional, Nilpanapan, Apirut, additional, Wongko, Kamonlak, additional, and Chanthasit, Phornphen, additional

Published
2022
Full Text
View/download PDF

19. Figure 6 from: Manitkoon S, Deesri U, Lauprasert K, Warapeang P, Nonsrirach T, Nilpanapan A, Wongko K, Chanthasit P (2022) Fossil assemblage from the Khok Pha Suam locality of northeastern, Thailand: an overview of vertebrate diversity from the Early Cretaceous Khok Kruat Formation (Aptian-Albian). Fossil Record 25(1): 83-98. https://doi.org/10.3897/fr.25.83081

Author

Manitkoon, Sita, primary, Deesri, Uthumporn, additional, Lauprasert, Komsorn, additional, Warapeang, Prapasiri, additional, Nonsrirach, Thanit, additional, Nilpanapan, Apirut, additional, Wongko, Kamonlak, additional, and Chanthasit, Phornphen, additional

Published
2022
Full Text
View/download PDF

20. Figure 2 from: Manitkoon S, Deesri U, Lauprasert K, Warapeang P, Nonsrirach T, Nilpanapan A, Wongko K, Chanthasit P (2022) Fossil assemblage from the Khok Pha Suam locality of northeastern, Thailand: an overview of vertebrate diversity from the Early Cretaceous Khok Kruat Formation (Aptian-Albian). Fossil Record 25(1): 83-98. https://doi.org/10.3897/fr.25.83081

Author

Manitkoon, Sita, primary, Deesri, Uthumporn, additional, Lauprasert, Komsorn, additional, Warapeang, Prapasiri, additional, Nonsrirach, Thanit, additional, Nilpanapan, Apirut, additional, Wongko, Kamonlak, additional, and Chanthasit, Phornphen, additional

Published
2022
Full Text
View/download PDF

22. Paleoneuroanatomy of an atoposaurid (Neosuchia, Crocodylomorpha) from the Sao Khua Formation (Thailand) and paleobiological implications

Author

Pochat, Yohan, Martin, Jeremy, Fernandez, Vincent, Amiot, Romain, Vincent, Peggy, Manitkoon, Sita, Nonsrirach, Thanit, Lauprasert, Komsorn, Laboratoire de Géologie de Lyon - Terre, Planètes, Environnement (LGL-TPE), École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Université Jean Monnet - Saint-Étienne (UJM)-Centre National de la Recherche Scientifique (CNRS), European Synchrotron Radiation Facility (ESRF), Imaging and Analysis Centre, The Natural History Museum, Centre de Recherche en Paléontologie - Paris (CR2P), Muséum national d'Histoire naturelle (MNHN)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Palaeontological Research and Education Centre, and Mahasarakham University

Subjects
Theriosuchus, neuroanatomy, Atoposauridae, Thailand, [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology
Abstract

International audience; The internal endocranial structures of an undescribed atoposaurid crocodylomorph from the Sao Khua Formation (Cretaceous: Berriasian-Barremian) in the North-East of Thailand are investigated. The specimen is comparable in size and external morphology to Theriosuchus grandinaris Lauprasert et al. 2011 but is preserved with the braincase uncrushed, contrary to the previously described holotype. We document for the first time the internal braincase structures in atoposaurids using synchrotron X-ray micro-computed tomography. The endocast of the braincase, associated nerves and arteries, auditory labyrinth, and cranial pneumatization, although quite deformed, are reconstructed at high resolution and compared to those of extant and fossil crocodylomorphs, representative of different ecological adaptations. This atoposaurid specimen shows an antero-posterior brain curvature and pericerebral spines (new structures), somewhat developed cerebral hemispheres, expanded semicircular canals with a more developed anterior one but an almost straight lateral one, a dorsoventrally expanded pituitary fossa, but also overdeveloped intertympanic diverticula and pharyngotympanic sinuses. The ecologicalsignificance of these structures is explored and, using different proxies and comparisons with extant taxa, we suggest that this specimen likely exhibited a downwardly tilted head posture (by about 10◦) and was sensitive to both low and mid frequencies. Functional comparisons are proposed between this specimen, extinct terrestrial crocodylomorphs (sebecosuchians), extant semi-aquatic crocodilians and aquatic (thalattosuchians) forms. From the morphology of the auditory labyrinth, we infer an enhanced sensitivity to pitching rather than yawing. Several hypotheses are formulated regarding the pneumatization of the skull. These features are discussed in ecological and phylogenetic frameworks. Our results highlight the need to gather new data, especially on altirostral forms, in order to deepen our understanding of the evolution of endocranial structures in crocodylomorphs with different ecological specializations, as well as to integrate them into new phylogenetic approaches.

Published
2021

Catalog

Books, media, physical & digital resources
See catalog results