Caytoniales

Caytoniales

[‚kā·tän·ē′ā‚lēz]
(paleobotany)
An order of Mesozoic plants.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Caytoniales

 

an order of fossil gymnospermous plants, which were widespread between the second half of the Triassic period and the end of the Cretaceous period. The leaves were petiolate and compound palmate, usually of four lanceolate leaflets with pinnate venation. Rounded cupules resembling ovaries were arranged in two rows on the leafless stalks. There were between six and 12 ovules in the cupule; grains of pollen with two air sacs were discovered in some. Oblong anthers, adnate in groups of four, were attached to the branched stems of the sporophylls.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Glossopteris and the Caytoniales (Doyle & Donoghue, 1986, 1992;
The Caytoniales: A new group of angiospermous plants from the Jurassic rocks of Yorkshire.