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Lepidodendron is an extinct genus of primitive lycopodian vascular plants belonging the order Lepidodendrales. It is well preserved and common in the fossil record. It is well preserved and common in the fossil record.
Various specimens of Lepidodendrales have been historically categorized as members of Lepidodendron, a genus defined by morphology of leaf cushions. DiMichele established Diaphorodendron to dissuade ambiguity over these widely ranging specimens, which includes some structurally preserved specimens which were previously members of Lepidodendron.
However, the composition of the forests changed from a lepidodendron-dominated forest to one of predominantly tree ferns and seed ferns. The Carboniferous rainforest collapse ( CRC ) was a minor extinction event that occurred around 305 million years ago in the Carboniferous period. [ 1 ]
They are one of the oldest lineages of extant (living) vascular plants; the group contains extinct plants that have been dated from the Silurian (ca. 425 million years ago). [ 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 ...
Period or supereon Extinction Date Probable causes [2]; Quaternary: Holocene extinction: c. 10,000 BC – Ongoing: Humans [3]: Quaternary extinction event: 640,000 ...
Species go extinct constantly as environments change, as organisms compete for environmental niches, and as genetic mutation leads to the rise of new species from older ones. At long irregular intervals, Earth's biosphere suffers a catastrophic die-off, a mass extinction , [ 9 ] often comprising an accumulation of smaller extinction events over ...
Sigillaria is a genus of extinct, spore-bearing, arborescent lycophyte, known from the Carboniferous and Permian periods. It is related to the more famous Lepidodendron , and more distantly to modern quillworts .
The timeline displays a graphical representation of the adaptations; the text attempts to explain the nature and robustness of the evidence. Plant evolution is an aspect of the study of biological evolution , predominantly involving evolution of plants suited to live on land, greening of various land masses by the filling of their niches with ...