Precisiones histológicas y bioquímicas acerca de los ejemplares de Frenelopsis procedentes de Torrelaguna (Madrid )

C. Álvarez Ramis; G. Almendros; A. Polo

doi:10.3989/egeol.84401-2653

Precisiones histológicas y bioquímicas acerca de los ejemplares de Frenelopsis procedentes de Torrelaguna (Madrid )

Authors

C. Álvarez Ramis Laboratorio de Paleobotánica y Paleoecología. Departamento de Paleontología, Facultad de Ciencias Geológicas.
G. Almendros Instituto de Edafología y Biología Vegetal (C. S. I. C.)
A. Polo Instituto de Edafología y Biología Vegetal (C. S. I. C.)

DOI:

https://doi.org/10.3989/egeol.84401-2653

Keywords:

Hystology, Biochemistry, Frenelopsis, Upper cretaceous, Palaeobotany, Humic substances.

Abstract

Different morphological features of the Frenelopsis from a Torrelaguna bassin (Madrid, Spain) are described and compared with F. alata and F. oligostomata , studied by other authors. The Frenelopsis rests present, in the studied deposit, a remarkable polymorphism with respect 10 the dimensions of the leaves, but all the specimens studied are greatiy related to F. oligostomata . The chemical study of the organic constituents of the cutic1es shows a heterogeneous composition, being the major constituents an alkali-insoluble cutinized residue and a likehumic acid polyphenolic extractable fraction, Cuticles contains a certain proportion of a highly alterated lignin-like polymer, and minimal amounts of fulvic acids, nitrogenated compounds, free hydrocarbons and carbohydrates. KEY WORDS: Hystology, Biochemistry, Frenelopsis, Upper cretaceous, Palaeobotany, Humic substances.

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Published

1984-04-30

How to Cite

Álvarez Ramis, C., Almendros, G., & Polo, A. (1984). Precisiones histológicas y bioquímicas acerca de los ejemplares de Frenelopsis procedentes de Torrelaguna (Madrid ). Estudios Geológicos, 40(1-2), 107–113. https://doi.org/10.3989/egeol.84401-2653

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Issue

Vol. 40 No. 1-2 (1984)

Section

Articles

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