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...
Guardado en:
| Publicado: |
2014
|
|---|---|
| Materias: | |
| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02724634_v34_n4_p767_PerezBen http://hdl.handle.net/20.500.12110/paper_02724634_v34_n4_p767_PerezBen |
| Aporte de: |
| id |
paper:paper_02724634_v34_n4_p767_PerezBen |
|---|---|
| record_format |
dspace |
| spelling |
paper:paper_02724634_v34_n4_p767_PerezBen2023-06-08T15:25:13Z Intraspecific morphological variation and its implications in the taxonomic status of Bufo pisanoi, a Pliocene anuran from eastern Argentina 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. 2014 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02724634_v34_n4_p767_PerezBen 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] 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. |
| 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 |
| publishDate |
2014 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02724634_v34_n4_p767_PerezBen http://hdl.handle.net/20.500.12110/paper_02724634_v34_n4_p767_PerezBen |
| _version_ |
1768545735485161472 |