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Living fossil. The coelacanths were thought to have gone extinct 66 million years ago, until a living specimen belonging to the order was discovered in 1938. A living fossil is an extant taxon that phenotypically resembles related species known only from the fossil record. To be considered a living fossil, the fossil species must be old ...
Ginkgo is a genus of non-flowering seed plants. The scientific name is also used as the English name. The order to which it belongs, Ginkgoales, first appeared in the Permian, [ 3 ] 270 million years ago, and Ginkgo is now the only living genus within the order. The rate of evolution within the genus has been slow, and almost all its species ...
A digital recreation of Baiera made from diverse images of fossils and academic descriptions. Ginkgo biloba is a living fossil, with fossils recognisably related to modern ginkgo from the early Permian , with likely oldest record being that of Trichopitys from the earliest Permian of France, over 290 million years old. [49]
Equisetum (/ ˌ ɛ k w ɪ ˈ s iː t əm /; horsetail) is the only living genus in Equisetaceae, a family of vascular plants that reproduce by spores rather than seeds. [2]Equisetum is a "living fossil", the only living genus of the entire subclass Equisetidae, which for over 100 million years was much more diverse and dominated the understorey of late Paleozoic forests.
A Huon pine colony on Mount Read, Tasmania, is estimated at 10,000 years old, with individual specimens living over 3,000 years. [38] Old Tjikko, a Norway spruce tree in the county of Dalarna, Sweden, is living on top of roots that have been radiocarbon-dated to 9,550 years old. The tree is part of a clonal colony that was established at the ...
Archaeopteris is an extinct genus of progymnosperm tree with fern -like leaves. A useful index fossil, this tree is found in strata dating from the Upper Devonian to Lower Carboniferous (383 to 323 million years ago), the oldest fossils being 385 million years old, [1] and had global distribution. Until the 2007 discovery of Wattieza, many ...
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. They sometimes reached heights of 50 metres (160 feet), [1 ...
Metasequoia, or dawn redwood, is a genus of fast-growing coniferous trees, one of three species of conifers known as redwoods. The living species Metasequoia glyptostroboides is native to Lichuan county in Hubei province, China. Although the shortest of the redwoods, it grows to at least 165 feet (50 meters) in height.