Metacryphaeus rotundatus, a new element of the trilobite fauna Calmoniidae (Phacopida), of the Ponta Grossa Formation (Devonian), Parana Basin, Brazil
| Autor: | Sabrina Pereira Soares, Marcello Guimarães Simões, Juliana de Moraes Leme |
|---|---|
| Přispěvatelé: | Universidade Estadual Paulista (Unesp), UNESB |
| Jazyk: | angličtina |
| Rok vydání: | 2008 |
| Předmět: |
Storm wave
Calmoniidae Devoniano Fauna Bacia do Paraná Ponta Grossa Conulariida Devonian Structural basin Phacopida taxonomy Paleontology Homalonotidae arthropod Temperate climate Sub-bacia Apucarana Parana Tibagi fauna Emsian new species Apucarana Basin biology Ecology lcsh:QE1-996.5 stratigraphy Trilobitomorpha Metacryphaeus rotundatus Trilobita Geology South America biology.organism_classification Subarctic climate Trilobite lcsh:Geology Apucarana sub-basin Cosmopolitan distribution Paraná basin Parana Basin Brazil |
| Zdroj: | Geologia USP. Série Científica, Vol 8, Iss 1, Pp 15-24 (2008) Scopus Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP Geologia USP. Série Científica, Vol 8, Iss 1 (2008) |
| Popis: | Submitted by Vitor Silverio Rodrigues (vitorsrodrigues@reitoria.unesp.br) on 2014-05-27T11:23:31Z No. of bitstreams: 0Bitstream added on 2014-05-27T14:46:11Z : No. of bitstreams: 1 2-s2.0-45849142953.pdf: 2292744 bytes, checksum: e6568e95c39feabb824d0a07448b8d22 (MD5) Made available in DSpace on 2014-05-27T11:23:31Z (GMT). No. of bitstreams: 0 Previous issue date: 2008-04-01 Calmoniids (Delo, 1935) are the most common and abundant group of trilobites of the fossil record of the Devonian Ponta Grossa Formation in the Apucarana sub-basin. Although known since the past century, the study of calmoniids has been taxonomically and stratigraphically biased. This is because some authors centered their studies on some particular genera from a few stratigraphic horizons within the basal portion of the Ponta Grossa Formation. The analyses of 398 specimens of calmoniid trilobites of the rocks of Jaguariaiva Member of the Ponta Grossa Formation, mainly from Tibagi county in the state of Paraná, Brazil, indicate the presence of specimens that are referable to Metacryphaeus rotundatus (Kozlowski, 1923). This is the first record of M. rotundatus in Brazilian Devonian rocks. Metacryphaeus rotundatus is a conspicuous species of the Emsian rocks of the Icla Formation, Bolivia. Although the affinities of the trilobite fauna of the Devonian Paraná Basin, in the context of the Malvinokaffric realm, are with the Brazilian and South Africa provinces, this finding is in accordance with new evidence (e.g., conulariids, homalonotids trilobites), indicating the presence of cosmopolitan species with Andean affinities. Metacryphaeus rotundatus lived in a broad paleoclimatic range, from a temperate, cold temperate to a subpolar climate. Finally, in the Devonian of the Paraná Basin, M. rotundatus lived and were preserved in muddy, organic rich bottoms, deposited in offshore waters, below the storm wave base, associated to marine flooding surfaces. Departamento de Educação Faculdade de Ciências de Bauru UNESP, Av. Engenheiro Luiz Edmundo Corrijo Coube 14-01, CEP 17033-360, Bauru, SR Departamento de Zoologia Instituto de Biociências de Botucatu UNESB, Botucatu, SP Departamento de Educação Faculdade de Ciências de Bauru UNESP, Av. Engenheiro Luiz Edmundo Corrijo Coube 14-01, CEP 17033-360, Bauru, SR |
| Databáze: | OpenAIRE |
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