genus of fossil tree ferns of the Mesozoic Era (about 65 to 250 million years ago), constituting the family Tempskyaceae, order Polypodiales. It was among the most bizarre of plants, with an unbranched trunk up to 40 cm (16 inches) across, tapering bluntly to a height of about 6 metres (20 feet) and covered densely on its upper two-thirds with small leaves. The lower trunk was almost entirely composed of fibrous roots; stems continued higher up scattered among the roots, becoming free but compressed together throughout the upper trunk.

* * *

Universalium. 2010.

Нужно сделать НИР?

Look at other dictionaries:

  • Geology of the Capitol Reef area — [ Waterpocket Fold is the major geographic feature in the area of the park. This view is from above Capitol Reef Scenic Drive looking back at the west face of the broken and eroded fold.] The exposed geology of the Capitol Reef area presents a… …   Wikipedia

  • Cedar Mountain Formation — Stratigraphic range: Late Cretaceous Type Geological formation Location Region North America The Cedar Mountain Formation is the name given to distinctive sedimentary rocks in eastern Utah that occur between the underlying …   Wikipedia

  • Fósiles de La Rioja — Icnita de un Terópodo encontrada cerca de Enciso. En La Rioja (España) son muchos los fósiles que afloran en la actualidad. Destacan por su número y conservación los yacimientos de icnitas (pisadas fósiles) de dinosaurio haciéndolo, según los… …   Wikipedia Español

  • Géologie de la région de Capitol Reef — Le Waterpocket Fold est l attrait principal de la region de Capitol Reef. La géologie de la région de Capitol Reef se caractérise par des dépôts sédimentaires datant principalement du Mésozoïque. Les formations géologiques, qui se forment suite à …   Wikipédia en Français

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”