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Registro de Cutículas com Estômatos em Associação Palinológica da Formação Itapecuru (Albiano), Bacia do Parnaíba, Brasil

2013; UNIVERSIDADE FEDERAL DO RIO DE JANEIRO; Volume: 36_2; Issue: 1 Linguagem: Inglês

10.11137/2013_2_16_24

ISSN

1982-3908

Autores

Neila N. Ferreira, Elizabete P. Ferreira, Ismar de Souza Carvalho,

Tópico(s)

Plant Diversity and Evolution

Resumo

During the Albian siliciclastic rock palynological analyses which correspond to Itapecuru Formation, Parnaíba basin were registered stomata cuticle fragments. These deposits outcrop in the left margin of the Itapecuru River in Querru Village, Itapecuru Mirim city (Maranhão state), where are interbedded sandstones, shales and claystones deposited in lacustrine environment with fluvial influence. Some stomata cuticle fragments represented by anomocytic, laterocytic and stephanocytic complexes are identified. These three complexes suggest development of hydrophyte, hygrophyte, mesophyte and xerophyte plants near of the deposition site. Trichomes of the Y-form and robust or thin simple morphotypes are associated to complexes.

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