The first Caipirasuchus (Mesoeucrocodylia, Notosuchia) from the Late Cretaceous of Minas Gerais, Brazil: new insights on sphagesaurid anatomy and taxonomy
Field work conducted by the staff of the Centro de Pesquisas Paleontológicas Llewellyn Ivor Price of the Universidade Federal do Triângulo Mineiro since 2009 at Campina Verde municipality (MG) have resulted in the discovery of a diverse vertebrate fauna from the Adamantina Formation (Bauru Basin). T...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
PeerJ Inc.
2018-09-01
|
| Series: | PeerJ |
| Subjects: | |
| Online Access: | https://peerj.com/articles/5594.pdf |
| _version_ | 1797423900528738304 |
|---|---|
| author | Agustín G. Martinelli Thiago S. Marinho Fabiano V. Iori Luiz Carlos B. Ribeiro |
| author_facet | Agustín G. Martinelli Thiago S. Marinho Fabiano V. Iori Luiz Carlos B. Ribeiro |
| author_sort | Agustín G. Martinelli |
| collection | DOAJ |
| description | Field work conducted by the staff of the Centro de Pesquisas Paleontológicas Llewellyn Ivor Price of the Universidade Federal do Triângulo Mineiro since 2009 at Campina Verde municipality (MG) have resulted in the discovery of a diverse vertebrate fauna from the Adamantina Formation (Bauru Basin). The baurusuchid Campinasuchus dinizi was described in 2011 from Fazenda Três Antas site and after that, preliminary descriptions of a partial crocodyliform egg, abelisaurid teeth, and fish remains have been done. Recently, the fossil sample has been considerably increased including the discovery of several, partially articulated fish remains referred to Lepisosteiformes and an almost complete and articulated skeleton referred to a new species of Caipirasuchus (Notosuchia, Sphagesauridae), which is the main subject of this contribution. At present, this genus was restricted to the Adamantina Formation cropping out in São Paulo state, with the species Caipirasuchus montealtensis, Caipirasuchus paulistanus, and Caipirasuchus stenognathus. The new material represents the holotype of a new species, Caipirasuchus mineirus n. sp., diferenciated from the previously ones due to the following traits: last two maxillary teeth located posterior to anterior edge of infraorbital fenestra, elongated lateroventral maxillo-jugal suture—about ½ the anteroposterior maxillar length—and contact between posterior crest of quadrate and posterior end of squamosal forming an almost 90° flaring roof of the squamosal, among others. C. mineirus was found in the same outcrop than Campinasuchus but stratigraphically the former occurs in the lower portion of the section with no unambiguous data supporting the coexistance of both taxa. |
| first_indexed | 2024-03-09T07:53:24Z |
| format | Article |
| id | doaj.art-3a41d1cb489a4c9f838c5ff39bf7572c |
| institution | Directory Open Access Journal |
| issn | 2167-8359 |
| language | English |
| last_indexed | 2024-03-09T07:53:24Z |
| publishDate | 2018-09-01 |
| publisher | PeerJ Inc. |
| record_format | Article |
| series | PeerJ |
| spelling | doaj.art-3a41d1cb489a4c9f838c5ff39bf7572c2023-12-03T01:19:45ZengPeerJ Inc.PeerJ2167-83592018-09-016e559410.7717/peerj.5594The first Caipirasuchus (Mesoeucrocodylia, Notosuchia) from the Late Cretaceous of Minas Gerais, Brazil: new insights on sphagesaurid anatomy and taxonomyAgustín G. Martinelli0Thiago S. Marinho1Fabiano V. Iori2Luiz Carlos B. Ribeiro3Instituto de Geociencias, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, BrazilCentro de Pesquisas Paleontológicas L. I. Price, Complexo Cultural e Científico Peirópolis, Pró-Reitoria de Extensão Universitária, Universidade Federal do Triangulo Mineiro, Uberaba, Minas Gerais, BrazilMuseu de Paleontologia “Prof. Antonio Celso de Arruda Campos”, Monte Alto, Sao Paulo, BrazilCentro de Pesquisas Paleontológicas L. I. Price, Complexo Cultural e Científico Peirópolis, Pró-Reitoria de Extensão Universitária, Universidade Federal do Triangulo Mineiro, Uberaba, Minas Gerais, BrazilField work conducted by the staff of the Centro de Pesquisas Paleontológicas Llewellyn Ivor Price of the Universidade Federal do Triângulo Mineiro since 2009 at Campina Verde municipality (MG) have resulted in the discovery of a diverse vertebrate fauna from the Adamantina Formation (Bauru Basin). The baurusuchid Campinasuchus dinizi was described in 2011 from Fazenda Três Antas site and after that, preliminary descriptions of a partial crocodyliform egg, abelisaurid teeth, and fish remains have been done. Recently, the fossil sample has been considerably increased including the discovery of several, partially articulated fish remains referred to Lepisosteiformes and an almost complete and articulated skeleton referred to a new species of Caipirasuchus (Notosuchia, Sphagesauridae), which is the main subject of this contribution. At present, this genus was restricted to the Adamantina Formation cropping out in São Paulo state, with the species Caipirasuchus montealtensis, Caipirasuchus paulistanus, and Caipirasuchus stenognathus. The new material represents the holotype of a new species, Caipirasuchus mineirus n. sp., diferenciated from the previously ones due to the following traits: last two maxillary teeth located posterior to anterior edge of infraorbital fenestra, elongated lateroventral maxillo-jugal suture—about ½ the anteroposterior maxillar length—and contact between posterior crest of quadrate and posterior end of squamosal forming an almost 90° flaring roof of the squamosal, among others. C. mineirus was found in the same outcrop than Campinasuchus but stratigraphically the former occurs in the lower portion of the section with no unambiguous data supporting the coexistance of both taxa.https://peerj.com/articles/5594.pdfSphagesauridaeAdamantina formationTriângulo mineiroBauru groupBrazil |
| spellingShingle | Agustín G. Martinelli Thiago S. Marinho Fabiano V. Iori Luiz Carlos B. Ribeiro The first Caipirasuchus (Mesoeucrocodylia, Notosuchia) from the Late Cretaceous of Minas Gerais, Brazil: new insights on sphagesaurid anatomy and taxonomy PeerJ Sphagesauridae Adamantina formation Triângulo mineiro Bauru group Brazil |
| title | The first Caipirasuchus (Mesoeucrocodylia, Notosuchia) from the Late Cretaceous of Minas Gerais, Brazil: new insights on sphagesaurid anatomy and taxonomy |
| title_full | The first Caipirasuchus (Mesoeucrocodylia, Notosuchia) from the Late Cretaceous of Minas Gerais, Brazil: new insights on sphagesaurid anatomy and taxonomy |
| title_fullStr | The first Caipirasuchus (Mesoeucrocodylia, Notosuchia) from the Late Cretaceous of Minas Gerais, Brazil: new insights on sphagesaurid anatomy and taxonomy |
| title_full_unstemmed | The first Caipirasuchus (Mesoeucrocodylia, Notosuchia) from the Late Cretaceous of Minas Gerais, Brazil: new insights on sphagesaurid anatomy and taxonomy |
| title_short | The first Caipirasuchus (Mesoeucrocodylia, Notosuchia) from the Late Cretaceous of Minas Gerais, Brazil: new insights on sphagesaurid anatomy and taxonomy |
| title_sort | first caipirasuchus mesoeucrocodylia notosuchia from the late cretaceous of minas gerais brazil new insights on sphagesaurid anatomy and taxonomy |
| topic | Sphagesauridae Adamantina formation Triângulo mineiro Bauru group Brazil |
| url | https://peerj.com/articles/5594.pdf |
| work_keys_str_mv | AT agustingmartinelli thefirstcaipirasuchusmesoeucrocodylianotosuchiafromthelatecretaceousofminasgeraisbrazilnewinsightsonsphagesauridanatomyandtaxonomy AT thiagosmarinho thefirstcaipirasuchusmesoeucrocodylianotosuchiafromthelatecretaceousofminasgeraisbrazilnewinsightsonsphagesauridanatomyandtaxonomy AT fabianoviori thefirstcaipirasuchusmesoeucrocodylianotosuchiafromthelatecretaceousofminasgeraisbrazilnewinsightsonsphagesauridanatomyandtaxonomy AT luizcarlosbribeiro thefirstcaipirasuchusmesoeucrocodylianotosuchiafromthelatecretaceousofminasgeraisbrazilnewinsightsonsphagesauridanatomyandtaxonomy AT agustingmartinelli firstcaipirasuchusmesoeucrocodylianotosuchiafromthelatecretaceousofminasgeraisbrazilnewinsightsonsphagesauridanatomyandtaxonomy AT thiagosmarinho firstcaipirasuchusmesoeucrocodylianotosuchiafromthelatecretaceousofminasgeraisbrazilnewinsightsonsphagesauridanatomyandtaxonomy AT fabianoviori firstcaipirasuchusmesoeucrocodylianotosuchiafromthelatecretaceousofminasgeraisbrazilnewinsightsonsphagesauridanatomyandtaxonomy AT luizcarlosbribeiro firstcaipirasuchusmesoeucrocodylianotosuchiafromthelatecretaceousofminasgeraisbrazilnewinsightsonsphagesauridanatomyandtaxonomy |