Chigutisaurid amphibians from the Upper Triassic of Argentina and their Phylogenetic relationships

A revision of the temnospondyl chigutisaurids from the Upper Triassic of Argentina is presented. The validity of the taxa originally proposed is discussed in the light of new material. The genus Pelorocephalus (Chigutisauridae) is diagnosed by the presence of a longitudinally keeled cultriform proce...

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Autor principal: Marsicano, C.A.
Formato: JOUR
Materias:
amphibian
phylogenetics
Triassic
Argentina
Australia
India
Amphibia
Chigutisauridae
Pelorocephalus
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00310239_v42_n3_p545_Marsicano
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_00310239_v42_n3_p545_Marsicano
record_format dspace
spelling todo:paper_00310239_v42_n3_p545_Marsicano2023-10-03T14:41:08Z Chigutisaurid amphibians from the Upper Triassic of Argentina and their Phylogenetic relationships Marsicano, C.A. amphibian phylogenetics Triassic Argentina Australia India Amphibia Chigutisauridae Pelorocephalus A revision of the temnospondyl chigutisaurids from the Upper Triassic of Argentina is presented. The validity of the taxa originally proposed is discussed in the light of new material. The genus Pelorocephalus (Chigutisauridae) is diagnosed by the presence of a longitudinally keeled cultriform process, occurrence of the anterior Meckelian fenestra on the suture between splenial and postsplenial, location of the chordatympanic foramen on the contact between angular and prearticular, and exposure of the angular on the lingual mandibular surface. Three species, Pelorocephalus mendozensis, P. tenax and P. cacheutensis, are distinguished mainly by differences in the structure of the occiput. Phylogenetic relationships among all known representatives of this family, including taxa from India and Australia, are discussed. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00310239_v42_n3_p545_Marsicano
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic amphibian
phylogenetics
Triassic
Argentina
Australia
India
Amphibia
Chigutisauridae
Pelorocephalus
spellingShingle amphibian
phylogenetics
Triassic
Argentina
Australia
India
Amphibia
Chigutisauridae
Pelorocephalus
Marsicano, C.A.
Chigutisaurid amphibians from the Upper Triassic of Argentina and their Phylogenetic relationships
topic_facet amphibian
phylogenetics
Triassic
Argentina
Australia
India
Amphibia
Chigutisauridae
Pelorocephalus
description A revision of the temnospondyl chigutisaurids from the Upper Triassic of Argentina is presented. The validity of the taxa originally proposed is discussed in the light of new material. The genus Pelorocephalus (Chigutisauridae) is diagnosed by the presence of a longitudinally keeled cultriform process, occurrence of the anterior Meckelian fenestra on the suture between splenial and postsplenial, location of the chordatympanic foramen on the contact between angular and prearticular, and exposure of the angular on the lingual mandibular surface. Three species, Pelorocephalus mendozensis, P. tenax and P. cacheutensis, are distinguished mainly by differences in the structure of the occiput. Phylogenetic relationships among all known representatives of this family, including taxa from India and Australia, are discussed.
format JOUR
author Marsicano, C.A.
author_facet Marsicano, C.A.
author_sort Marsicano, C.A.
title Chigutisaurid amphibians from the Upper Triassic of Argentina and their Phylogenetic relationships
title_short Chigutisaurid amphibians from the Upper Triassic of Argentina and their Phylogenetic relationships
title_full Chigutisaurid amphibians from the Upper Triassic of Argentina and their Phylogenetic relationships
title_fullStr Chigutisaurid amphibians from the Upper Triassic of Argentina and their Phylogenetic relationships
title_full_unstemmed Chigutisaurid amphibians from the Upper Triassic of Argentina and their Phylogenetic relationships
title_sort chigutisaurid amphibians from the upper triassic of argentina and their phylogenetic relationships
url http://hdl.handle.net/20.500.12110/paper_00310239_v42_n3_p545_Marsicano
work_keys_str_mv AT marsicanoca chigutisauridamphibiansfromtheuppertriassicofargentinaandtheirphylogeneticrelationships
_version_ 1807320051026493440

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