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dc.contributor.author
Pacheco, Cristian P.
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Martinelli, Agustín Guillermo
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Pavanatto, Ane E. B.
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Soares, Marina
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Silva, Sérgio Dias da
dc.date.available
2020-01-08T21:17:22Z
dc.date.issued
2018-05
dc.identifier.citation
Pacheco, Cristian P.; Martinelli, Agustín Guillermo; Pavanatto, Ane E. B.; Soares, Marina; Silva, Sérgio Dias da; Prozostrodon brasiliensis, a probainognathian cynodont from the Late Triassic of Brazil: second record and improvements on its dental anatomy; Taylor & Francis Ltd; Historical Biology; 30; 4; 5-2018; 475-485
dc.identifier.issn
0891-2963
dc.identifier.uri
http://hdl.handle.net/11336/94044
dc.description.abstract
Probainognathian cynodonts are conspicuous elements of the Assemblage Zones of the Triassic Santa Maria Supersequence in southern Brazil. Within this group, the derived clade Prozostrodontia, in which the crown group Mammalia is included, is taxonomic diverse in the Hyperodapedon and Riograndia AZs. We describe here the second known specimen (CAPPA/UFSM 0123) of Prozostrodon brasiliensis, until now only represented by its holotype. CAPPA/UFSM 0123 includes a right dentary with dentition. As in the holotype of P. brasiliensis, it has four lower incisors, pc4 with conspicuous cusp a, and small cusps b, c, and d, pc5-pc6 of ‘triconodont’ type with cusps a > c > b > d, with continuous lingual cingulum bearing up to six small discrete cusps, length of the lower tooth row more than half the length of the dentary, and relatively deep horizontal ramus of the dentary. The new specimen is about 25% smaller than the holotype and there is not a diastema between the canine and postcanine teeth, indicating its juvenile condition. Based on both known specimens of P. brasiliensis, a discussion on tooth replacement is presented, showing that the adult individual has more postcanine tooth morphotypes than the juvenile one.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Taylor & Francis Ltd
dc.rights
info:eu-repo/semantics/openAccess
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https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
CYNODONTIA
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HYPERODAPEDON AZ
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LOWER JAW
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PROZOSTRODONTIA
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Paleontología
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Ciencias de la Tierra y relacionadas con el Medio Ambiente
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CIENCIAS NATURALES Y EXACTAS
dc.title
Prozostrodon brasiliensis, a probainognathian cynodont from the Late Triassic of Brazil: second record and improvements on its dental anatomy
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-10-16T19:29:34Z
dc.identifier.eissn
1029-2381
dc.journal.volume
30
dc.journal.number
4
dc.journal.pagination
475-485
dc.journal.pais
Reino Unido
dc.journal.ciudad
Londres
dc.description.fil
Fil: Pacheco, Cristian P.. Universidade Federal de Santa Maria; Brasil
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Fil: Martinelli, Agustín Guillermo. Universidade Federal do Rio Grande do Sul; Brasil. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
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Fil: Pavanatto, Ane E. B.. Universidade Federal de Santa Maria; Brasil
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Fil: Soares, Marina B.. Universidade Federal do Rio Grande do Sul; Brasil
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Fil: Dias-da-Silva, Sérgio. Universidade Federal de Santa Maria; Brasil
dc.journal.title
Historical Biology
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1080/08912963.2017.1292423
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.tandfonline.com/doi/full/10.1080/08912963.2017.1292423
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