The phylogenetic position of Nyctiphruretus acudens, a parareptile from the Permian of Russia
Several specimens preserving the cranial structure of Nyctiphruretus acudens, a parareptile from the Permian Mezen River locality, Rusia, are described here for the first time. Previous studies have offered conflicting reconstructed images of Nyctiphruretus but no illustrations of actual specimens....
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Ediciones Complutense
2011
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Online Access: | https://revistas.ucm.es/index.php/JIGE/article/view/JIGE1010220123A |
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ftunicmadridrev:oai:ojs.pkp.sfu.ca:article/33851 2023-05-15T17:12:21+02:00 The phylogenetic position of Nyctiphruretus acudens, a parareptile from the Permian of Russia SäiIä, L. K. 2011-08-12 application/pdf https://revistas.ucm.es/index.php/JIGE/article/view/JIGE1010220123A spa spa Ediciones Complutense https://revistas.ucm.es/index.php/JIGE/article/view/JIGE1010220123A/35173 Journal of Iberian Geology; Vol. 36 Núm. 2 (2010): Mesozoic Terrestrial Ecosystems and Biota; 123 - 143 Journal of Iberian Geology; Vol 36 No 2 (2010): Mesozoic Terrestrial Ecosystems and Biota; 123 - 143 1886-7995 1698-6180 Parareptilia; Procolophonoidea; Nyctiphruretus acudens; Phylogeny; Permian; Russia Parareptilia; Procolophonoidea; Nyctiphruretus acudens; Filogenia; Pérmico; Rusia Paleontología; info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Artículo revisado por pares 2011 ftunicmadridrev 2019-06-15T07:04:32Z Several specimens preserving the cranial structure of Nyctiphruretus acudens, a parareptile from the Permian Mezen River locality, Rusia, are described here for the first time. Previous studies have offered conflicting reconstructed images of Nyctiphruretus but no illustrations of actual specimens. The new information was incorporated into two existing analyses of parareptilian relationships. The results indicate that Nyctiphruretus is closely related to procolophonoids, pareiasaurs and other non-pareiasaurian Mezen River parareptiles but the interrelationships within this group remain unresolved. Nyctiphruretus was recovered either as the sister taxon of a clade formed of pareiasaurs and the other non-pareiasaurian Mezen River parareptiles, or as the sister taxon of procolophonoids. This is the first time the Nyctiphruretus-Procolophonoidea clade received support in a phylogenetic analysis. The interrelationships between several other groups within the Parareptilia also remain unresolved, or poorly supported, highlighting the need for more detailed descriptions and analyses of this enigmatic group of extinct reptiles. Se describen por primera vez varios ejemplares de Nyctiphruretus acudens que han conservado su estructura craneal, un parareptil del Pérmico de la localidad de Mezen River en Rusia. En estudios previos se documentaron imágenes conflictivas de Nyctiphruretus aunque nunca se publicaron ilustraciones del material fosil. La nueva informacion se ha incorporado a dos analisis ya publicados de las relaciones de parentesco de parareptiles. Los resultados indican que de Nyctiphruretus esta proximamente emparentado con procolofonidos, pareiasaurios y otros parareptiles no-pareiasaurios de Mezen River, aunque las interrelaciones dentro de este grupo quedan sin resolver. Nyctiphruretus aparece como el grupo hermano de un clado formado por pareiasaurios y los demas parareptiles no-pareisaurios de Mezen River, o bien como el grupo hermano de procolofonidos. Es el primer resultado que el clado Nyctiphruretus-Procolophonoidea queda diagnosticado en un análisis filogenético. Las interrelaciones en otros varios grupoide Parareptilia tambien permanecen sin resolver, o bien quedan pobremente soportadas, resaltandose la necesidad de realizar descripciones mas detalladas y analisis de este grupo tan enigmatico de reptiles extintos. Article in Journal/Newspaper Mezen Mezen' Universidad Complutense de Madrid (UCM): Revistas Científicas Complutenses Demas ENVELOPE(-58.034,-58.034,-63.352,-63.352) |
institution |
Open Polar |
collection |
Universidad Complutense de Madrid (UCM): Revistas Científicas Complutenses |
op_collection_id |
ftunicmadridrev |
language |
Spanish |
topic |
Parareptilia; Procolophonoidea; Nyctiphruretus acudens; Phylogeny; Permian; Russia Parareptilia; Procolophonoidea; Nyctiphruretus acudens; Filogenia; Pérmico; Rusia Paleontología; |
spellingShingle |
Parareptilia; Procolophonoidea; Nyctiphruretus acudens; Phylogeny; Permian; Russia Parareptilia; Procolophonoidea; Nyctiphruretus acudens; Filogenia; Pérmico; Rusia Paleontología; SäiIä, L. K. The phylogenetic position of Nyctiphruretus acudens, a parareptile from the Permian of Russia |
topic_facet |
Parareptilia; Procolophonoidea; Nyctiphruretus acudens; Phylogeny; Permian; Russia Parareptilia; Procolophonoidea; Nyctiphruretus acudens; Filogenia; Pérmico; Rusia Paleontología; |
description |
Several specimens preserving the cranial structure of Nyctiphruretus acudens, a parareptile from the Permian Mezen River locality, Rusia, are described here for the first time. Previous studies have offered conflicting reconstructed images of Nyctiphruretus but no illustrations of actual specimens. The new information was incorporated into two existing analyses of parareptilian relationships. The results indicate that Nyctiphruretus is closely related to procolophonoids, pareiasaurs and other non-pareiasaurian Mezen River parareptiles but the interrelationships within this group remain unresolved. Nyctiphruretus was recovered either as the sister taxon of a clade formed of pareiasaurs and the other non-pareiasaurian Mezen River parareptiles, or as the sister taxon of procolophonoids. This is the first time the Nyctiphruretus-Procolophonoidea clade received support in a phylogenetic analysis. The interrelationships between several other groups within the Parareptilia also remain unresolved, or poorly supported, highlighting the need for more detailed descriptions and analyses of this enigmatic group of extinct reptiles. Se describen por primera vez varios ejemplares de Nyctiphruretus acudens que han conservado su estructura craneal, un parareptil del Pérmico de la localidad de Mezen River en Rusia. En estudios previos se documentaron imágenes conflictivas de Nyctiphruretus aunque nunca se publicaron ilustraciones del material fosil. La nueva informacion se ha incorporado a dos analisis ya publicados de las relaciones de parentesco de parareptiles. Los resultados indican que de Nyctiphruretus esta proximamente emparentado con procolofonidos, pareiasaurios y otros parareptiles no-pareiasaurios de Mezen River, aunque las interrelaciones dentro de este grupo quedan sin resolver. Nyctiphruretus aparece como el grupo hermano de un clado formado por pareiasaurios y los demas parareptiles no-pareisaurios de Mezen River, o bien como el grupo hermano de procolofonidos. Es el primer resultado que el clado Nyctiphruretus-Procolophonoidea queda diagnosticado en un análisis filogenético. Las interrelaciones en otros varios grupoide Parareptilia tambien permanecen sin resolver, o bien quedan pobremente soportadas, resaltandose la necesidad de realizar descripciones mas detalladas y analisis de este grupo tan enigmatico de reptiles extintos. |
format |
Article in Journal/Newspaper |
author |
SäiIä, L. K. |
author_facet |
SäiIä, L. K. |
author_sort |
SäiIä, L. K. |
title |
The phylogenetic position of Nyctiphruretus acudens, a parareptile from the Permian of Russia |
title_short |
The phylogenetic position of Nyctiphruretus acudens, a parareptile from the Permian of Russia |
title_full |
The phylogenetic position of Nyctiphruretus acudens, a parareptile from the Permian of Russia |
title_fullStr |
The phylogenetic position of Nyctiphruretus acudens, a parareptile from the Permian of Russia |
title_full_unstemmed |
The phylogenetic position of Nyctiphruretus acudens, a parareptile from the Permian of Russia |
title_sort |
phylogenetic position of nyctiphruretus acudens, a parareptile from the permian of russia |
publisher |
Ediciones Complutense |
publishDate |
2011 |
url |
https://revistas.ucm.es/index.php/JIGE/article/view/JIGE1010220123A |
long_lat |
ENVELOPE(-58.034,-58.034,-63.352,-63.352) |
geographic |
Demas |
geographic_facet |
Demas |
genre |
Mezen Mezen' |
genre_facet |
Mezen Mezen' |
op_source |
Journal of Iberian Geology; Vol. 36 Núm. 2 (2010): Mesozoic Terrestrial Ecosystems and Biota; 123 - 143 Journal of Iberian Geology; Vol 36 No 2 (2010): Mesozoic Terrestrial Ecosystems and Biota; 123 - 143 1886-7995 1698-6180 |
op_relation |
https://revistas.ucm.es/index.php/JIGE/article/view/JIGE1010220123A/35173 |
_version_ |
1766069160600666112 |