The phylogenetic position of Nyctiphruretus acudens, a parareptile from the Permian of Russia

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Sammanfattning

Several specimens preserving the cranial structure of Nyctiphruretus acudens, a parareptile from the Permian Mezen River locality, Russia, 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.
Originalspråkengelska
TidskriftJournal of Iberian Geology
Volym36
Utgåva2
Sidor (från-till)123-143
Antal sidor21
ISSN1698-6180
DOI
StatusPublicerad - 2010
MoE-publikationstypA1 Tidskriftsartikel-refererad

Vetenskapsgrenar

  • 1181 Ekologi, evolutionsbiologi
  • 1172 Miljövetenskap

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title = "The phylogenetic position of Nyctiphruretus acudens, a parareptile from the Permian of Russia",
abstract = "Several specimens preserving the cranial structure of Nyctiphruretus acudens, a parareptile from the Permian Mezen River locality, Russia, 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.",
keywords = "Parareptilia, Procolophonoidea, Nyctiphruretus acudens, phylogeny, Permian, Russia, TRIASSIC EXTINCTION EVENT, PROCOLOPHONID REPTILE, CRANIAL ANATOMY, CONFIDENCE-LIMITS, SOUTH-AFRICA, OSTEOLOGY, OKLAHOMA, TURTLES, ORIGIN, LIFE, 1181 Ecology, evolutionary biology, 1172 Environmental sciences",
author = "Laura S{\"a}il{\"a}",
year = "2010",
doi = "10.5209/rev_JIGE.2010.v36.n2.2",
language = "English",
volume = "36",
pages = "123--143",
journal = "Journal of Iberian Geology",
issn = "1698-6180",
publisher = "Universidad Complutense de Madrid",
number = "2",

}

The phylogenetic position of Nyctiphruretus acudens, a parareptile from the Permian of Russia. / Säilä, Laura.

I: Journal of Iberian Geology, Vol. 36, Nr. 2, 2010, s. 123-143.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

TY - JOUR

T1 - The phylogenetic position of Nyctiphruretus acudens, a parareptile from the Permian of Russia

AU - Säilä, Laura

PY - 2010

Y1 - 2010

N2 - Several specimens preserving the cranial structure of Nyctiphruretus acudens, a parareptile from the Permian Mezen River locality, Russia, 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.

AB - Several specimens preserving the cranial structure of Nyctiphruretus acudens, a parareptile from the Permian Mezen River locality, Russia, 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.

KW - Parareptilia

KW - Procolophonoidea

KW - Nyctiphruretus acudens

KW - phylogeny

KW - Permian

KW - Russia

KW - TRIASSIC EXTINCTION EVENT

KW - PROCOLOPHONID REPTILE

KW - CRANIAL ANATOMY

KW - CONFIDENCE-LIMITS

KW - SOUTH-AFRICA

KW - OSTEOLOGY

KW - OKLAHOMA

KW - TURTLES

KW - ORIGIN

KW - LIFE

KW - 1181 Ecology, evolutionary biology

KW - 1172 Environmental sciences

U2 - 10.5209/rev_JIGE.2010.v36.n2.2

DO - 10.5209/rev_JIGE.2010.v36.n2.2

M3 - Article

VL - 36

SP - 123

EP - 143

JO - Journal of Iberian Geology

JF - Journal of Iberian Geology

SN - 1698-6180

IS - 2

ER -