The ultrastructure of Cyclusphaera psilata from the Cretaceous of Argentina

Thomas N. Taylor; Michael S. Zavada; Sergio Archangelsky

doi:10.1080/00173138709428906

The ultrastructure of Cyclusphaera psilata from the Cretaceous of Argentina

Thomas N. Taylor, Michael S. Zavada, Sergio Archangelsky

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Abstract

The fine structure and morphology of Cyclusphaera pollen collected from the early Cretaceous of Argentina is described. The diporate grains possess an exine structure that combines features of both angiosperms and gymnosperms, and raises questions as to the validity of using certain pollen characters in the identification of major taxonomic groups through time.

Original language	English (US)
Pages (from-to)	74-80
Number of pages	7
Journal	Grana
Volume	26
Issue number	1
DOIs	https://doi.org/10.1080/00173138709428906
State	Published - Apr 1 1987
Externally published	Yes

Bibliographical note

Funding Information:
ACKNOWLEDGEMENTS A portion of this study wz1s completed while Archan- gelsky sewed as a Distinguished Visiting University Pro- fessor at The Ohio State University. This study bras sup- ported in part by funds from the National Science Foun- dation (BSR-8313786; BSR-8402813) and CONICET of Argentina.

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note = "Funding Information: ACKNOWLEDGEMENTS A portion of this study wz1s completed while Archan- gelsky sewed as a Distinguished Visiting University Pro- fessor at The Ohio State University. This study bras sup- ported in part by funds from the National Science Foun- dation (BSR-8313786; BSR-8402813) and CONICET of Argentina.",

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AU - Archangelsky, Sergio

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AB - The fine structure and morphology of Cyclusphaera pollen collected from the early Cretaceous of Argentina is described. The diporate grains possess an exine structure that combines features of both angiosperms and gymnosperms, and raises questions as to the validity of using certain pollen characters in the identification of major taxonomic groups through time.

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The ultrastructure of Cyclusphaera psilata from the Cretaceous of Argentina

Abstract

Bibliographical note

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