The below mentioned article provides short notes on Family Nilssoniaceae of Cycadales. All reported members of this family of Cycadales are fossils. Its seed-bearing organs have been described as belonging to genus Beania while its leaves have been described under two fossil genera viz. Nilssonia and Pseudoctenis.The pollen-bearing organs of Nilssoniaceae are described as Androstrobus. Beania, a fossil cycad, is [...]
In this article we will discuss about Ginkgoales. After reading this article you will learn about: 1. Meaning of Ginkgoales 2. General Characteristics of Ginkgoales 3. Classification 4. Phylogency. Meaning of Ginkgoales: The order Ginkgoales is today represented by only one living member, i.e. Ginkgo biloba. Ginkgoales was, however, very abundantly represented in the world by several species of about [...]
In this article we will discuss about Cordaitales. After reading this article you will learn about: 1. Distribution of Cordaitales 2. Distinguishing Features of Cordaitales 3. Classification 4. Affinities. Distribution of Cordaitales: Cordaitales, an extinct group of Palaeozoic tall trees of gymnosperms, formed "the world's first great forests". The name was given to honour an Australian botanist, A.J. Corda. Majority [...]