气候变化领域集成服务门户(CCPortal): Towards an actualistic view of the Crato Konservat-Lagerstätte paleoenvironment: A new hypothesis as an Early Cretaceous (Aptian) equatorial and semi-arid wetland

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DOI	10.1016/j.earscirev.2021.103573
	Towards an actualistic view of the Crato Konservat-Lagerstätte paleoenvironment: A new hypothesis as an Early Cretaceous (Aptian) equatorial and semi-arid wetland
	Ribeiro A.C.; Ribeiro G.C.; Varejão F.G.; Battirola L.D.; Pessoa E.M.; Simões M.G.; Warren L.V.; Riccomini C.; Poyato-Ariza F.J.
发表日期	2021
ISSN	00128252
卷号	216
英文摘要	An alternative hypothesis concerning the paleoecological and paleoenvironmental depositional conditions of the Crato Konservat-Lagerstätte (CKL), Crato Formation, Aptian, NE Brazil, one of the most extraordinary Gondwana fossil sites, is proposed. Following an actualistic approach, the ecology of extant relatives of the most abundant and diverse fossil groups recorded in the CKL (i.e., vascular plants, arthropods, fishes, and tetrapods) is considered. Data is based on an extensive literature review followed by a re-examination of recently collected fossils. This approach allowed a detailed appraisal of the stratigraphic/ecological distribution of the main fossil groups preserved in the CKL. Plant and animal groups are recorded in three main stratigraphic intervals, named Intervals I–III in ascending order. Most fossils are to be considered autochthonous to parautochthonous and have been preserved in distinct stages of base-level fluctuations within a shallow lacustrine depositional system, subject to periodic flooding in large, depressed areas. Exceptional preservation in such environments was mediated by microbially-induced processes (i.e., microbial mat entombment), mostly in the coastal areas of the alkaline lake. Based on the distinct sedimentary facies and autecological attributes of dominant paleo-bioindicators, a new paleoenvironmental model for the CKL is proposed, encompassing a seasonal, semi-arid, shallow lacustrine wetland. Faunal and floral content were ecologically arranged in long-lasting aquatic zones, surrounded by periodically flooded mesophytic ecotones and outer xeric habitats, as in the modern alkaline lake Chad in Africa. Our data show the relevance of multiproxy analyses (i.e., paleontological, sedimentological, geochemical, and stratigraphic) of exceptional fossil sites for assessing paleoenvironmental conditions in depositional settings subject to continuous base-level changes, such as those existing in complex, present-day wetland ecosystems. The recognition of key parameters in ancient wetlands is of great importance concerning the formation of non-marine Konservat-Lagerstätten in the geological record. © 2021 Elsevier B.V.
关键词	Crato Formation Cretaceous Exceptional preservation Konservat-Lagerstatte Wetlands
英文关键词	biostratigraphy; Cretaceous; depositional environment; fossil assemblage; marine environment; paleoecology; paleoenvironment; sedimentary rock; semiarid region; Brazil; Arthropoda; Pisces; Tetrapoda; Tracheophyta
语种	英语
来源期刊	Earth Science Reviews
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/204123
作者单位	Departamento de Biologia e Zoologia, Universidade Federal de Mato Grosso, Av. Fernando Corrêa da Costa, 2367, Cuiabá, Mato Grosso 78060-900, Brazil; Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Avenida dos Estados, 5001, Bairro Bangu, Santo André, São Paulo 09210-580, Brazil; Departamento de Geologia, Escola de Minas, Universidade Federal de Ouro Preto, Morro do Cruzeiro, Ouro Preto, MG 35400-000, Brazil; Instituto LAMIR, Departamento de Geologia, Universidade Federal do Paraná, Av. Cel. Francisco H dos Santos, 100, Jardim das Américas, Curitiba, PR 81531-980, Brazil; Instituto de Ciências Naturais, Humanas e Sociais, Universidade Federal de Mato Grosso, Av. Alexandre Ferronato, 1.200, Setor Industrial, Sinop, Mato Grosso 78557-267, Brazil; Departamento de Botânica e Ecologia, Universidade Federal de Mato Grosso, Av. Fernando Corrêa da Costa, 2367, Cuiabá, Mato Grosso 78060-900, Brazil; Setor de Zoologia, Instituto de Biociências, Universidade Estadual Paulista, Distrito de Ru...
推荐引用方式 GB/T 7714	Ribeiro A.C.,Ribeiro G.C.,Varejão F.G.,et al. Towards an actualistic view of the Crato Konservat-Lagerstätte paleoenvironment: A new hypothesis as an Early Cretaceous (Aptian) equatorial and semi-arid wetland[J],2021,216.
APA	Ribeiro A.C..,Ribeiro G.C..,Varejão F.G..,Battirola L.D..,Pessoa E.M..,...&Poyato-Ariza F.J..(2021).Towards an actualistic view of the Crato Konservat-Lagerstätte paleoenvironment: A new hypothesis as an Early Cretaceous (Aptian) equatorial and semi-arid wetland.Earth Science Reviews,216.
MLA	Ribeiro A.C.,et al."Towards an actualistic view of the Crato Konservat-Lagerstätte paleoenvironment: A new hypothesis as an Early Cretaceous (Aptian) equatorial and semi-arid wetland".Earth Science Reviews 216(2021).