Calamarian sentence example
- In the other Calamarian strobili known the whorls of sporangiophores are separated by whorls of bracts.
- In the oldest known Calamarian, however, Archaeocalamites (Devonian and Lower Carboniferous), the leaves were repeatedly forked.
- Using Calamites as a generic name for all those Calamarian stems in which the ribs alternate at the nodes, we have, on Weiss's system, the following sub-genera: Stylocalamites, branches rare and irregularly arranged; Calamitina, branches in regular verticils, limited to certain nodes, which surmount specially short internodes; Eucalamites, branches present on every node.
- A considerable number of Calamarian fructifications are known, preserved, some as carbonaceous impressions, others as petrified specimens, exhibiting the internal structure.
- In many cases the cones have been found in connexion with branches bearing characteristic Calamarian foliage.Advertisement
- Four main types of structure may be distinguished among Calamarian strobili.
- The anatomy of the axis is essentially similar to that of a young Calamarian twig, with some variations in detail.
- While the anatomy has a somewhat Lycopodiaceous character, the arrangement of the appendages is altogether that of the Sphenophylleae; at the same time Calamarian affinities are indicated by the characters of the sporangiophores and sporangia.