Almargemia

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Almargemia
Temporal range: Early Cretaceous
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Scientific classification
Kingdom:
Plantae
(unranked):
Cycadophyta
(unranked):
Cycadopsida
Order:
Cycadales
Family:
Zamiaceae
Genus:
Almargemia

Florin 1933[1]
Species

Almargemia is a genus of fossil leaves from the Early Cretaceous of Portugal produced by members of the Zamiaceae. It was erected by Rudolf Florin based on macrofossil material with preserved cuticle.[2]

Taxonomy[]

The material on which it is based was first described by Oswald Heer under the name Ctenidium dentatum and C. integerrimum.[3] Later, the cuticle was described by Florin, who transferred the material to the newly erected genus Almargemia.

Description[]

The leaflets of Almargemia have few parallel veins that do not fuse together. The leaflet margin have large, lobe-like teeth. The cuticle has elongated pavement cells, with some pavement cells having a dark-stained cuticles. The stomata are sunken in a stomatal pit.

References[]

  1. ^ Florin, Carl Rudolf (1933). Studien uber die Cycadales des Mesozoikums nebst Erorterngen uber die Spaltoffnungsapparate der Bennettitales. K. Svenska Vetensk. Acad. Handl.
  2. ^ Florin, Carl Rudolf (1933). Studien uber die Cycadales des Mesozoikums nebst Erorterngen uber die Spaltoffnungsapparate der Bennettitales. K. Svenska Vetensk. Acad. Handl.
  3. ^ Heer, Oswald (1881). Contributions à la flore fossile du Portugal. J. Wurster.
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