Intraspecific morphological variation and its implications in the taxonomic status of Bufo pisanoi, a Pliocene anuran from eastern Argentina

The true toad family Bufonidae is one of the most speciose and widespread clades of neobatrachian anurans. Despite being well represented in South America at present, bufonids have a poor fossil record on this continent. Bufo pisanoi from Pliocene outcrops of coastal Buenos Aires Province, Argentina...

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Autores principales: Pérez Ben, C.M., Gómez, R.O., Báez, A.M.
Formato: JOUR
Materias:
cladistics
comparative study
fossil record
intraspecific interaction
morphology
morphometry
osteology
paleontology
Pliocene
taxonomy
toad
Argentina
Buenos Aires [Argentina]
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_02724634_v34_n4_p767_PerezBen
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_02724634_v34_n4_p767_PerezBen
record_format dspace
spelling todo:paper_02724634_v34_n4_p767_PerezBen2023-10-03T15:15:10Z Intraspecific morphological variation and its implications in the taxonomic status of Bufo pisanoi, a Pliocene anuran from eastern Argentina Pérez Ben, C.M. Gómez, R.O. Báez, A.M. cladistics comparative study fossil record intraspecific interaction morphology morphometry osteology paleontology Pliocene taxonomy toad Argentina Buenos Aires [Argentina] The true toad family Bufonidae is one of the most speciose and widespread clades of neobatrachian anurans. Despite being well represented in South America at present, bufonids have a poor fossil record on this continent. Bufo pisanoi from Pliocene outcrops of coastal Buenos Aires Province, Argentina, is the only extinct South American bufonid taxon recognized to date. In this study, we investigated the validity of the putative diagnostic characters of this extinct species to confirm its taxonomic status based on revision of the holotype and referred material. Comparisons with several extant bufonid species led us to include the taxon represented by this fossil material within the Rhinella marina clade, close to R. arenarum. Further comparisons and a geometric morphometric analysis based on a relatively large sample of the latter species demonstrated that the morphology of B. pisanoi falls within the variation range of R. arenarum. Therefore, we consider that the names B. pisanoi and R. arenarum represent the same taxon, with the latter having priority. This work emphasizes the importance of considering intraspecific variation whenever possible, because this leads to a more rigorous approach to the identification of fossil specimens and tests the taxonomic value of different osteological characters. © 2014 by the Society of Vertebrate Paleontology. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_02724634_v34_n4_p767_PerezBen
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic cladistics
comparative study
fossil record
intraspecific interaction
morphology
morphometry
osteology
paleontology
Pliocene
taxonomy
toad
Argentina
Buenos Aires [Argentina]
spellingShingle cladistics
comparative study
fossil record
intraspecific interaction
morphology
morphometry
osteology
paleontology
Pliocene
taxonomy
toad
Argentina
Buenos Aires [Argentina]
Pérez Ben, C.M.
Gómez, R.O.
Báez, A.M.
Intraspecific morphological variation and its implications in the taxonomic status of Bufo pisanoi, a Pliocene anuran from eastern Argentina
topic_facet cladistics
comparative study
fossil record
intraspecific interaction
morphology
morphometry
osteology
paleontology
Pliocene
taxonomy
toad
Argentina
Buenos Aires [Argentina]
description The true toad family Bufonidae is one of the most speciose and widespread clades of neobatrachian anurans. Despite being well represented in South America at present, bufonids have a poor fossil record on this continent. Bufo pisanoi from Pliocene outcrops of coastal Buenos Aires Province, Argentina, is the only extinct South American bufonid taxon recognized to date. In this study, we investigated the validity of the putative diagnostic characters of this extinct species to confirm its taxonomic status based on revision of the holotype and referred material. Comparisons with several extant bufonid species led us to include the taxon represented by this fossil material within the Rhinella marina clade, close to R. arenarum. Further comparisons and a geometric morphometric analysis based on a relatively large sample of the latter species demonstrated that the morphology of B. pisanoi falls within the variation range of R. arenarum. Therefore, we consider that the names B. pisanoi and R. arenarum represent the same taxon, with the latter having priority. This work emphasizes the importance of considering intraspecific variation whenever possible, because this leads to a more rigorous approach to the identification of fossil specimens and tests the taxonomic value of different osteological characters. © 2014 by the Society of Vertebrate Paleontology.
format JOUR
author Pérez Ben, C.M.
Gómez, R.O.
Báez, A.M.
author_facet Pérez Ben, C.M.
Gómez, R.O.
Báez, A.M.
author_sort Pérez Ben, C.M.
title Intraspecific morphological variation and its implications in the taxonomic status of Bufo pisanoi, a Pliocene anuran from eastern Argentina
title_short Intraspecific morphological variation and its implications in the taxonomic status of Bufo pisanoi, a Pliocene anuran from eastern Argentina
title_full Intraspecific morphological variation and its implications in the taxonomic status of Bufo pisanoi, a Pliocene anuran from eastern Argentina
title_fullStr Intraspecific morphological variation and its implications in the taxonomic status of Bufo pisanoi, a Pliocene anuran from eastern Argentina
title_full_unstemmed Intraspecific morphological variation and its implications in the taxonomic status of Bufo pisanoi, a Pliocene anuran from eastern Argentina
title_sort intraspecific morphological variation and its implications in the taxonomic status of bufo pisanoi, a pliocene anuran from eastern argentina
url http://hdl.handle.net/20.500.12110/paper_02724634_v34_n4_p767_PerezBen
work_keys_str_mv AT perezbencm intraspecificmorphologicalvariationanditsimplicationsinthetaxonomicstatusofbufopisanoiaplioceneanuranfromeasternargentina
AT gomezro intraspecificmorphologicalvariationanditsimplicationsinthetaxonomicstatusofbufopisanoiaplioceneanuranfromeasternargentina
AT baezam intraspecificmorphologicalvariationanditsimplicationsinthetaxonomicstatusofbufopisanoiaplioceneanuranfromeasternargentina
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