Sirindhorna: Difference between revisions
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==Discovery and naming== |
==Discovery and naming== |
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[[File:Sirindhorna skull and head.PNG|left|thumb|A: skull diagram B: life [[Paleoart|restoration]]]] |
[[File:Sirindhorna skull and head.PNG|left|thumb|A: skull diagram B: life [[Paleoart|restoration]]]] |
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In 2007, the [[Fukui Prefectural Dinosaur Museum]] (FPDM) approached the Northeastern Research Institute of Petrified Woods and Mineral Resources, Nakhon Ratchasima Rajabhat University (NRRU) and associated Khorat Fossil Museum on the possibility of a twenty-five year collaboration. The motivation for such an effort was because of the similar age of rocks in Suranaree Subdistrict, [[Nakhon Ratchasima Province]], [[Thailand]] and [[Katsuyama, Fukui|Katsuayama]], [[Fukui Prefecture]], [[Japan]]. Similar dinosaurs are known from the formations of both locales, and so the researchers wanted to collaborate in research to be able to more deeply compare the prehistory of both countries. The collaboration was approved, and this contributed to the basis of the founding of the [[Asia Dinosaur Association]] in 2013, by which time over 30,000 fossils had been found by the joint effort.<ref name=Sirindhorna/><ref name="collaboration">{{cite news | url=https://www.japantimes.co.jp/news/2013/04/16/national/fukui-museum-unearths-japans-dinosaur-roots/#.XL5jO6R7ntR | title=Fukui museum unearths Japan's dinosaur roots | date=April 13, 2019 | agency=The Fukui Times | accessdate=April 22, 2019 | author=Watanabe, Natsume | location=Chiyoda, Tokyo}}</ref> |
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''Sirindhorna'' is known from the [[holotype specimen]] NRRU3001-166, an articulated [[braincase]], as well as a number of other skull bones. It was collected in the Ban Saphan Hin site, Suranaree Subdistrict, [[Nakhon Ratchasima Province]], from the [[Khok Kruat Formation]], dating to the [[Aptian]] [[Geological stage|stage]] of the late [[Early Cretaceous]] [[Period (geologic time)|Period]], about 125-112 [[mya (unit)|million years ago]].<ref name=Sirindhorna/> ''Sirindhorna'' was one of eighteen dinosaur taxa from 2015 to be described in [[open access]] or free-to-read journals.<ref>{{cite web |title=The Open Access Dinosaurs of 2015 |url=http://blogs.plos.org/paleocomm/2016/01/06/the-open-access-dinosaurs-of-2015/ |publisher=PLOS Paleo}}</ref> |
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The fossils of ''Sirindhorna'' were collected in the Ban Saphan Hin site of the [[Khok Kruat Formation]]; the dating of the formation is uncertain (as index fossils have proven rare), but it's thought to mostly likely date the [[Aptian]] [[Geological stage|stage]] of the late [[Early Cretaceous]] [[Period (geologic time)|Period]], bewteen 125-112 [[mya (unit)|million years ago]].<ref name=Sirindhorna/> The formation does not usually crop out in the Nakhon Ratchasima province, where the geologic features are covered in a layer of thin red soil (local legend claims this colour is from the blood of dinosaurs<ref name=collaboration/>);<ref name=Sirindhorna/> [[Early Cretaceous]] bedrock in Suranaree is generally found around a metre below ground level.<ref name=collaboration/> The locality of the ''Sirindhorna'' bonebed is usually used for farming of [[corn]] and [[tapioca]]. Digging to make a reservoir, farmers happened upon dinosaur fossils. Researchers re-identified the bonebed's location and gathered information on [[taphonomy]] and other fossils found there, pertaining to various vertebrates but not any plants or invertebrates. Farming was not conducted while fossil excavation was conducted.<ref name=Sirindhorna/> |
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''Sirindhorna'' was first named by Thai [[palaeontologists]] Masateru Shibata, Pratueng Jintasakul, Yoichi Azuma and Hai-Lu You in [[2015 in paleontology|2015]]. The [[type species]] is ''Sirindhorna khoratensis''. The [[name of a biological genus|generic name]] is dedication to [[Princess Maha Chakri Sirindhorn]] for her contribution to the support and encouragement of palaeontology in Thailand. The [[specific name (zoology)|specific name]] is derived from Khorat, the informal name of [[Nakhon Ratchasima Province]].<ref name=Sirindhorna/> |
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Described in [[2015 in paleontology|2015]] by Thai [[palaeontologists]] Masateru Shibata, Pratueng Jintasakul, Yoichi Azuma and Hai-Lu You, ''Sirindhorna'' was one of eighteen dinosaur taxa from the year to be described in an [[open access]] or free-to-read journal.<ref name=Sirindhorna/><ref>{{cite web |title=The Open Access Dinosaurs of 2015 |url=http://blogs.plos.org/paleocomm/2016/01/06/the-open-access-dinosaurs-of-2015/ |publisher=PLOS Paleo}}</ref> The [[type species|type]] and only species of the genus is ''Sirindhorna khoratensis''. The [[taxon]] is known from the [[holotype specimen]] NRRU3001-166, an articulated [[braincase]], as well as a number of disarticulated referred specimens. The material known from these referred specimens consists of three more partial braincases, one with an articulated postorbital, one right premaxilla, a left and right maxilla, a right jugal, surangular, and quadrate, one predentary, a right and left dentary, and assorted teeth. The [[name of a biological genus|generic name]] is dedication to [[Princess Maha Chakri Sirindhorn]] for her contribution to the support and encouragement of palaeontology in Thailand. The [[specific name (zoology)|specific name]] is derived from Khorat, the informal name of Nakhon Ratchasima Province.<ref name=Sirindhorna/> |
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==References== |
==References== |
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Revision as of 01:40, 23 April 2019
| Sirindhorna Temporal range: Early Cretaceous,
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|---|---|
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| Right dentary bone from three angles | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Clade: | Dinosauria |
| Clade: | †Ornithischia |
| Clade: | †Neornithischia |
| Clade: | †Ornithopoda |
| Superfamily: | †Hadrosauroidea |
| Genus: | †Sirindhorna Shibata, Jintasakul, Azuma & You, 2015 |
| Type species | |
| †Sirindhorna khoratensis Shibata, Jintasakul, Azuma & You, 2015
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Sirindhorna is a genus of hadrosauroid ornithopod dinosaur from Early Cretaceous deposits of northeastern Thailand.[1]
Discovery and naming
In 2007, the Fukui Prefectural Dinosaur Museum (FPDM) approached the Northeastern Research Institute of Petrified Woods and Mineral Resources, Nakhon Ratchasima Rajabhat University (NRRU) and associated Khorat Fossil Museum on the possibility of a twenty-five year collaboration. The motivation for such an effort was because of the similar age of rocks in Suranaree Subdistrict, Nakhon Ratchasima Province, Thailand and Katsuayama, Fukui Prefecture, Japan. Similar dinosaurs are known from the formations of both locales, and so the researchers wanted to collaborate in research to be able to more deeply compare the prehistory of both countries. The collaboration was approved, and this contributed to the basis of the founding of the Asia Dinosaur Association in 2013, by which time over 30,000 fossils had been found by the joint effort.[1][2]
The fossils of Sirindhorna were collected in the Ban Saphan Hin site of the Khok Kruat Formation; the dating of the formation is uncertain (as index fossils have proven rare), but it's thought to mostly likely date the Aptian stage of the late Early Cretaceous Period, bewteen 125-112 million years ago.[1] The formation does not usually crop out in the Nakhon Ratchasima province, where the geologic features are covered in a layer of thin red soil (local legend claims this colour is from the blood of dinosaurs[2]);[1] Early Cretaceous bedrock in Suranaree is generally found around a metre below ground level.[2] The locality of the Sirindhorna bonebed is usually used for farming of corn and tapioca. Digging to make a reservoir, farmers happened upon dinosaur fossils. Researchers re-identified the bonebed's location and gathered information on taphonomy and other fossils found there, pertaining to various vertebrates but not any plants or invertebrates. Farming was not conducted while fossil excavation was conducted.[1]
Described in 2015 by Thai palaeontologists Masateru Shibata, Pratueng Jintasakul, Yoichi Azuma and Hai-Lu You, Sirindhorna was one of eighteen dinosaur taxa from the year to be described in an open access or free-to-read journal.[1][3] The type and only species of the genus is Sirindhorna khoratensis. The taxon is known from the holotype specimen NRRU3001-166, an articulated braincase, as well as a number of disarticulated referred specimens. The material known from these referred specimens consists of three more partial braincases, one with an articulated postorbital, one right premaxilla, a left and right maxilla, a right jugal, surangular, and quadrate, one predentary, a right and left dentary, and assorted teeth. The generic name is dedication to Princess Maha Chakri Sirindhorn for her contribution to the support and encouragement of palaeontology in Thailand. The specific name is derived from Khorat, the informal name of Nakhon Ratchasima Province.[1]
References
- ^ a b c d e f g "A New Basal Hadrosauroid Dinosaur from the Lower Cretaceous Khok Kruat Formation in Nakhon Ratchasima Province, Northeastern Thailand". PLoS ONE. 10 (12): e0145904. 2015. doi:10.1371/journal.pone.0145904. PMC 4696827. PMID 26716981.
{{cite journal}}: Unknown parameter|authors=ignored (help)CS1 maint: unflagged free DOI (link) - ^ a b c Watanabe, Natsume (April 13, 2019). "Fukui museum unearths Japan's dinosaur roots". Chiyoda, Tokyo. The Fukui Times. Retrieved April 22, 2019.
- ^ "The Open Access Dinosaurs of 2015". PLOS Paleo.
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