In this article we will discuss about the characters of Lepidocarpon. Though Lepidocarpon is known only from its strobilus it has been widely held that it could have been borne on a Lepidophlois type of stem. The fossils of Lepidocarpon have been obtained from the coal strata in England and U.S.A. The strobili were mososporangiate though the plant was heterosporous. [...]
In this article we will discuss about:- 1. Occurrence and Distribution of Equisetum 2. Sporophyte of Equisetum 3. Gametophyte 4. Phylogeny. Occurrence and Distribution of Equisetum: Equisetum is popularly known as horsetail because of its bushy habit. There are about 25 species distributed in all parts of the world except perhaps in Australia and New Zealand. They are found mostly [...]
In this article we will discuss about the external features and internal structure of calamites. External Features of Calamites: The calamitean fossils range from pith casts, stems, twigs and leaves to strobili. The stem is known as Calamities, leafy twigs are called An nularia, and fructification is known as Calamostachys. The plant body of Calamites was a tall tree (Fig. [...]