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Eospermatopteris
''Wattieza'' was a genus of prehistoric trees that existed in the mid-Devonian that belong to the cladoxylopsids, close relatives of the modern ferns and horsetails. The 2005 (publicly revealed in 2007) discovery in Schoharie County, New York, of fossils from the Middle Devonian about 385 million years ago united the crown of ''Wattieza'' to a root and trunk known since 1870. The fossilized grove of "Gilboa stumps" discovered at Gilboa, New York, were described as ''Eospermatopteris'', though the complete plant remained unknown. These fossils have been described as the earliest known trees, standing 8 m (26 ft) or more tall, resembling the unrelated modern tree fern.Stein, W. E., F. Mannolini, L. V. Hernick, E. Landling, and C. M. Berry. 2007"Giant cladoxylopsid trees resolve the enigma of the Earth's earliest forest stumps at Gilboa" ''Nature'' (19 April 2007) 446:904-907. ''Wattieza'' had fronds rather than leaves, and they reproduced with spores. Belgian paleob ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pseudosporochnales
Pseudosporochnales is an order of the extinct cladoxylopsids. It contains the Hyeniales.Thomas N. Taylor, Edith L. Taylor, Michael Krings: Paleobotany. The Biology and Evolution of Fossil Plants . Second Edition, Academic Press 2009, , p. 388-398. References Prehistoric plant orders Fern orders {{devonian-plant-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wattieza Trunk
''Wattieza'' was a genus of prehistoric trees that existed in the mid-Devonian that belong to the cladoxylopsids, close relatives of the modern ferns and horsetails. The 2005 (publicly revealed in 2007) discovery in Schoharie County, New York, of fossils from the Middle Devonian about 385 million years ago united the crown of ''Wattieza'' to a root and trunk known since 1870. The fossilized grove of "Gilboa stumps" discovered at Gilboa, New York, were described as ''Eospermatopteris'', though the complete plant remained unknown. These fossils have been described as the earliest known trees, standing 8 m (26 ft) or more tall, resembling the unrelated modern tree fern.Stein, W. E., F. Mannolini, L. V. Hernick, E. Landling, and C. M. Berry. 2007"Giant cladoxylopsid trees resolve the enigma of the Earth's earliest forest stumps at Gilboa" ''Nature'' (19 April 2007) 446:904-907. ''Wattieza'' had fronds rather than leaves, and they reproduced with spores. Belgian paleo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wattieza Casasii
''Wattieza'' was a genus of prehistoric trees that existed in the mid-Devonian that belong to the cladoxylopsids, close relatives of the modern ferns and horsetails. The 2005 (publicly revealed in 2007) discovery in Schoharie County, New York, of fossils from the Middle Devonian about 385 million years ago united the crown of ''Wattieza'' to a root and trunk known since 1870. The fossilized grove of "Gilboa stumps" discovered at Gilboa, New York, were described as ''Eospermatopteris'', though the complete plant remained unknown. These fossils have been described as the earliest known trees, standing 8 m (26 ft) or more tall, resembling the unrelated modern tree fern.Stein, W. E., F. Mannolini, L. V. Hernick, E. Landling, and C. M. Berry. 2007"Giant cladoxylopsid trees resolve the enigma of the Earth's earliest forest stumps at Gilboa" ''Nature'' (19 April 2007) 446:904-907. ''Wattieza'' had fronds rather than leaves, and they reproduced with spores. Belgian paleo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cladoxylopsida
The cladoxylopsids are an extinct group of plants related to ferns and sphenopsids. They had a central trunk, from the top of which several lateral branches were attached. Fossils of these plants originate in the Middle Devonian to Early Carboniferous periods (around ), mostly just as stems. Cladoxylopsida contains two orders. The order Hyeniales is now included in Pseudosporochnales. Intact fossils of the Middle Devonian cladoxylopsid '' Wattieza'' show it to have been a tree, the earliest identified in the fossil record as of 2007. In 2019, experts from Cardiff University, UK; Binghamton University and the New York State Museum discovered more fossils of Cladoxylopsida and Archaeopteris in a quarry in Cairo, New York. A recent (2017) discovery in Xinjiang in China of early Late Devonian (Frasnian The Frasnian is one of two faunal stages in the Late Devonian Period. It lasted from million years ago to million years ago. It was preceded by the Givetian Stage and followe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cladoxylopsid
The cladoxylopsids are an extinct group of plants related to ferns and sphenopsids. They had a central trunk, from the top of which several lateral branches were attached. Fossils of these plants originate in the Middle Devonian to Early Carboniferous periods (around ), mostly just as stems. Cladoxylopsida contains two orders. The order Hyeniales is now included in Pseudosporochnales. Intact fossils of the Middle Devonian cladoxylopsid '' Wattieza'' show it to have been a tree, the earliest identified in the fossil record as of 2007. In 2019, experts from Cardiff University, UK; Binghamton University and the New York State Museum discovered more fossils of Cladoxylopsida and Archaeopteris in a quarry in Cairo, New York. A recent (2017) discovery in Xinjiang in China of early Late Devonian (Frasnian The Frasnian is one of two faunal stages in the Late Devonian Period. It lasted from million years ago to million years ago. It was preceded by the Givetian Stage and followe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gilboa Fossil Forest
Gilboa Fossil Forest, New York, United States, is a petrified forest and one of the oldest known forests. Located near the Gilboa Dam in Schoharie County, New York, the region is home to tree trunks from the Devonian period. The fossils, some of the only survivors of their type in the world, are believed to have been from one of the first forests on Earth, and was part of the Earth's afforestation. Paleobotanists have been interested in the site since the 1920s when construction work for a water supply project found several large, vertical fossilized stumps. Some of these remain on display at the Gilboa Dam site () and the New York Power Authority Blenheim-Gilboa Visitor's Center in Schoharie County and at the New York State Museum The New York State Museum is a research-backed institution in Albany, New York, United States. It is located on Madison Avenue, attached to the south side of the Empire State Plaza, facing onto the plaza and towards the New York State Capitol. .... ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
London-Brabant Massif
The London-Brabant Massif or London-Brabant Platform is, in the tectonic structure of Europe, a structural high or massif that stretches from the Rhineland in western Germany across northern Belgium (in the province of Brabant) and the North Sea to the sites of East Anglia and the middle Thames in southern England. The massif also occurs in the Belgian subsurface, where it is bounded to the northeast by the Roer Valley Graben that runs diagonally through Dutch Limburg. The Midlands Microcraton (southeastern Wales and part of western England) is often considered part of the massif and to reflect this the names Wales–Brabant Massif, Wales–London–Brabant Massif and Wales–Brabant High are sometimes used. The London–Brabant Massif is part of the former microcontinent Avalonia. To the south it borders the Rhenohercynian Zone of the Hercynian orogeny. To the northeast it is flanked by the Anglo-Dutch Basin in the subsurface of the North Sea. At times in geologic history the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spore
In biology, a spore is a unit of sexual or asexual reproduction that may be adapted for dispersal and for survival, often for extended periods of time, in unfavourable conditions. Spores form part of the life cycles of many plants, algae, fungi and protozoa. Bacterial spores are not part of a sexual cycle, but are resistant structures used for survival under unfavourable conditions. Myxozoan spores release amoeboid infectious germs ("amoebulae") into their hosts for parasitic infection, but also reproduce within the hosts through the pairing of two nuclei within the plasmodium, which develops from the amoebula. In plants, spores are usually haploid and unicellular and are produced by meiosis in the sporangium of a diploid sporophyte. Under favourable conditions the spore can develop into a new organism using mitotic division, producing a multicellular gametophyte, which eventually goes on to produce gametes. Two gametes fuse to form a zygote which develops into a new s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leaves
A leaf (plural, : leaves) is any of the principal appendages of a vascular plant plant stem, stem, usually borne laterally aboveground and specialized for photosynthesis. Leaves are collectively called foliage, as in "autumn foliage", while the leaves, stem, flower, and fruit collectively form the shoot system. In most leaves, the primary photosynthesis, photosynthetic tissue is the palisade mesophyll and is located on the upper side of the blade or lamina of the leaf but in some species, including the mature foliage of ''Eucalyptus'', palisade mesophyll is present on both sides and the leaves are said to be isobilateral. Most leaves are flattened and have distinct upper (Glossary of botanical terms#adaxial, adaxial) and lower (Glossary of botanical terms#abaxial, abaxial) surfaces that differ in color, hairiness, the number of stomata (pores that intake and output gases), the amount and structure of epicuticular wax and other features. Leaves are mostly green in color due ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fronds
A frond is a large, divided leaf. In both common usage and botanical nomenclature, the leaves of ferns are referred to as fronds and some botanists restrict the term to this group. Other botanists allow the term frond to also apply to the large leaves of cycads, as well as palms ( Arecaceae) and various other flowering plants, such as mimosa or sumac. "Frond" is commonly used to identify a large, compound leaf, but if the term is used botanically to refer to the leaves of ferns and algae it may be applied to smaller and undivided leaves. Fronds have particular terms describing their components. Like all leaves, fronds usually have a stalk connecting them to the main stem. In botany, this leaf stalk is generally called a petiole, but in regard to fronds specifically it is called a stipe, and it supports a flattened blade (which may be called a lamina), and the continuation of the stipe into this portion is called the rachis. The blades may be simple (undivided), pinnatifid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tree Fern
The tree ferns are arborescent (tree-like) ferns that grow with a trunk elevating the fronds above ground level, making them trees. Many extant tree ferns are members of the order Cyatheales, to which belong the families Cyatheaceae (scaly tree ferns), Dicksoniaceae, Metaxyaceae, and Cibotiaceae. It is estimated that Cyatheales originated in the early Jurassic, and is the third group of ferns known to have given rise to tree-like forms. The others are the extinct '' Tempskya'' of uncertain position, and Osmundales where the extinct Guaireaceae and some members of Osmundaceae also grew into trees. In addition there were the Psaroniaceae and Tietea in the Marattiales, which is the sister group to most living ferns including Cyatheales. Other ferns which are also tree ferns, are ''Leptopteris'' and ''Todea'' in the family Osmundaceae, which can achieve short trunks under a metre tall. Fern species with short trunks in the genera ''Blechnum'', '' Cystodium'' and ''Sadleria'' from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tree
In botany, a tree is a perennial plant with an elongated stem, or trunk, usually supporting branches and leaves. In some usages, the definition of a tree may be narrower, including only woody plants with secondary growth, plants that are usable as lumber or plants above a specified height. In wider definitions, the taller palms, tree ferns, bananas, and bamboos are also trees. Trees are not a taxonomic group but include a variety of plant species that have independently evolved a trunk and branches as a way to tower above other plants to compete for sunlight. The majority of tree species are angiosperms or hardwoods; of the rest, many are gymnosperms or softwoods. Trees tend to be long-lived, some reaching several thousand years old. Trees have been in existence for 370 million years. It is estimated that there are some three trillion mature trees in the world. A tree typically has many secondary branches supported clear of the ground by the trunk. This trunk typically ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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