globalchange  > 过去全球变化的重建
DOI: 10.1016/j.palaeo.2014.11.007
论文题名:
Frasnian conodonts at high palaeolatitude (Amazonas Basin, north Brazil)
作者: Cardoso C.N.; Sanz-López J.; Blanco-Ferrera S.; Lemos V.B.; Scomazzon A.K.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2015
卷: 418
起始页码: 57
结束页码: 64
语种: 英语
英文关键词: Amazonas Basin ; Cold water fauna ; Conodont ; High latitude ; Late Devonian
英文摘要: A conodont fauna is studied from the subsurface of Upper Devonian black shales belonging to the Abacaxis Member of the Barreirinha Formation, Amazonas Basin. Two samples of other members of this formation are barren. The fauna consists of Cryptotaxis sp. A, Mehlina gradata, '. Ozarkodina' aff. sannemanni, Polygnathus sp. and, probably, Prioniodina sp. This association suggests a late Frasnian age, agreeing with the age previously assigned to the latest Frasnian to middle Famennian palynomorphs. The conodont fauna is added to another two late Frasnian-middle Famennian conodont occurrences in Bolivia and Brazil. The coincidence in age and facies (black shales) seems to indicate a unique time/environment favourable to the immigration and development of conodonts in the Devonian of northern South America. The low diversity association suggests cold water-dwelling taxa spreading to a high palaeolatitude during an episode of gentler latitudinal temperature gradient. © 2014 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/69058
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作者单位: Universidade Federal do Rio Grande do Sul, Avda. Bento Gonçalves, 9500, Porto Alegre, Rio Grande do Sul, Brazil; CAPES Foundation, Ministry of Education of Brazil, SBN, Quadra 2, Brasília, DF, Brazil; Departamento de Geología, Universidad de Oviedo, C/ Arias de Velasco s/n, Oviedo, Spain; Universidade Federal de Pelotas, Praça Domingos Rodrigues 2, Pelotas, Rio Grande do Sul, Brazil

Recommended Citation:
Cardoso C.N.,Sanz-López J.,Blanco-Ferrera S.,et al. Frasnian conodonts at high palaeolatitude (Amazonas Basin, north Brazil)[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2015-01-01,418
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