Search results
Results from the WOW.Com Content Network
Lepidodendron is an extinct genus of primitive lycopodian vascular plants belonging the order Lepidodendrales.It is well preserved and common in the fossil record. Like other Lepidodendrales, species of Lepidodendron grew as large-tree-like plants in wetland coal forest environments.
Lepidodendrales (from the Greek for "scale tree") or arborescent lycophytes are an extinct order of primitive, vascular, heterosporous, arborescent (tree-like) plants belonging to Lycopodiopsida. Members of Lepidodendrales are the best understood of the fossil lycopsids due to the vast diversity of Lepidodendrales specimens and the diversity in ...
The sand inside the trunks became solid rock, and the outer bark of the lycopsids became a thin layer of coal. Though some trunks are elliptical, especially the tallest, Lepidodendron lycopsids were typically circular. The deformations were likely caused by the force of the rising flood waters that filled the trunks with sand, as indicated by ...
During the Carboniferous, tree-like plants (such as Lepidodendron, Sigillaria, and other extinct genera of the order Lepidodendrales) formed huge forests that dominated the landscape. Unlike modern trees, leaves grew out of the entire surface of the trunk and branches, but fell off as the plant grew, leaving only a small cluster of leaves at ...
PDF and full text (HTML) versions will be made available soon. Mercury from chlor-alkali plants: measured concentrations in food product sugar
PDF-1.6 %忏嫌 161 0 obj > endobj 167 0 obj >/Filter/FlateDecode/ID[03A3A120764B429F82E6DE15067C9432>3A7CF0E60FC1904EA1D84BB29784CB49>]/Index[161 8]/Info ...
[2] [3] Lycophytes were some of the dominating plant species of the Carboniferous period, and included the tree-like Lepidodendrales, some of which grew over 40 metres (130 ft) in height, although extant lycophytes are relatively small plants. [4] The scientific names and the informal English names used for this group of plants are ambiguous.
Sigillaria was a tree-like plant reaching a height up to 30 m (98 ft), [1] and lycopsids were capable to reach a height of up to 50 m (160 ft). [4] These lycopsids had a tall, single or occasionally forked trunk [2] that lacked wood. Support came from a layer of closely packed leaf bases just below the surface of the trunk, while the center was ...