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Utrechtiaceae
Utrechtiaceae is an extinct family of trees related to modern conifers. This family dates back to the late Carboniferous and Cisuralian, Early Permian. Description They were forest trees with almost horizontal standing leafy lateral shoots and with vertical tribes. They were generally small trees. At least with ''Utrechtia piniformis'' the side shoots are in whorls. Like other Voltziales, Voltzialean plants, they had compact ovulate cones bearing bilateral bract-scale complexes. The leaves are scale-like, arranged spirally and only a few millimeters long. Genera Utrechtiaceae include the following selected genera: * ''Ernestiodendron'' Florin, 1934 * ''Lebachiella'' S.V. Meyen, 1997 * ''Ortiseia'' R. Florin, 1964 * ''Moyliostrobus'' C.N. Miller & J.T. Brown, 1973 : known from the Lower Permian of Texas (''Moyliostrobus texanum''). * ''Otovicia'' * ''Utrechtia'' G.W. Rothwell & G. Mapes, 2003 See also * References Paleobiology Database* Charles B. Beck: Origin and Evolution ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Utrechtia
Utrechtiaceae is an extinct family of trees related to modern conifers. This family dates back to the late Carboniferous and Early Permian 01 or '01 may refer to: * The year 2001, or any year ending with 01 * The month of January * 1 (number) Music * '01 (Richard Müller album), 01'' (Richard Müller album), 2001 * 01 (Son of Dave album), ''01'' (Son of Dave album), 2000 * 01 (Urban .... Description They were forest trees with almost horizontal standing leafy lateral shoots and with vertical tribes. They were generally small trees. At least with ''Utrechtia piniformis'' the side shoots are in whorls. Like other Voltzialean plants, they had compact ovulate cones bearing bilateral bract-scale complexes. The leaves are scale-like, arranged spirally and only a few millimeters long. Genera Utrechtiaceae include the following selected genera: * '' Ernestiodendron'' Florin, 1934 * '' Lebachiella'' S.V. Meyen, 1997 * '' Ortiseia'' R. Florin, 1964 * '' Moyliostrobus'' C.N. Miller & ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Voltziales
Voltziales is an extinct order of conifers. The group contains the ancestral lineages from which all modern conifer groups emerged. The earliest Voltzialean conifers appear in the Late Carboniferous ( Pennsylvanian). Modern conifer lineages emerged from voltzialean ancestors from the Late Permian to Jurassic. Voltzialean conifers outside modern groups, such as '' Krassilovia'', known from the leaf taxon ''Podozamites'', that survived into the late Cretaceous. One of the earliest and most primitive genera is ''Walchia'', known originally for its leaf form genus, and primitive members of the order are commonly called "Walchian conifers". The order consists of these families: * Utrechtiaceae * Thucydiaceae * Voltziaceae * Emporiaceae * Majonicaceae * Ullmanniaceae * Bartheliaceae * Ferugliocladaceae * Buriadiaceae *Krassiloviaceae The genus ''Voltzia'' was named in honour of the French geologist Philippe Louis Voltz Philippe-Louis Voltz (15 August 1785 – 6 February 1840) ... [...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] |
Conifer
Conifers are a group of conifer cone, cone-bearing Spermatophyte, seed plants, a subset of gymnosperms. Scientifically, they make up the phylum, division Pinophyta (), also known as Coniferophyta () or Coniferae. The division contains a single extant class (biology), class, Pinopsida. All Neontology, extant conifers are perennial plant, perennial woody plants with secondary growth. The great majority are trees, though a few are shrubs. Examples include Cedrus, cedars, Pseudotsuga, Douglas-firs, Cupressaceae, cypresses, firs, junipers, Agathis, kauri, larches, pines, Tsuga, hemlocks, Sequoioideae, redwoods, spruces, and Taxaceae, yews.Campbell, Reece, "Phylum Coniferophyta". Biology. 7th. 2005. Print. P. 595 As of 1998, the division Pinophyta was estimated to contain eight families, 68 genera, and 629 living species. Although the total number of species is relatively small, conifers are ecology, ecologically important. They are the dominant plants over large areas of land, most ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carboniferous
The Carboniferous ( ) is a geologic period and system of the Paleozoic that spans 60 million years from the end of the Devonian Period million years ago ( Mya), to the beginning of the Permian Period, million years ago. The name ''Carboniferous'' means "coal-bearing", from the Latin '' carbō'' ("coal") and '' ferō'' ("bear, carry"), and refers to the many coal beds formed globally during that time. The first of the modern 'system' names, it was coined by geologists William Conybeare and William Phillips in 1822, based on a study of the British rock succession. The Carboniferous is often treated in North America as two geological periods, the earlier Mississippian and the later Pennsylvanian. Terrestrial animal life was well established by the Carboniferous Period. Tetrapods (four limbed vertebrates), which had originated from lobe-finned fish during the preceding Devonian, became pentadactylous in and diversified during the Carboniferous, including early amphibian line ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cisuralian
The Cisuralian is the first Series (stratigraphy), series/Epoch (geology), epoch of the Permian. The Cisuralian was preceded by the Pennsylvanian (geology), Pennsylvanian and followed by the Guadalupian. The Cisuralian Epoch is named after the western slopes of the Ural Mountains in Russia and Kazakhstan and dates between 298.9 ± 0.15 – 272.3 ± 0.5 Mya. The Cisuralian is often synonymous with the informal terms early Permian or lower Permian. It corresponds approximately with the Wolfcampian in southwestern North America. The series saw the appearance of beetles and Fly, flies and was a relatively stable warming period of about 21 million years. Name and background The Cisuralian is the first series or epoch of the Permian. The Cisuralian was preceded by the last Pennsylvanian epoch (Gzhelian) and is followed by the Permian Guadalupian Epoch. The name "Cisuralian" was proposed in 1982, and approved by the International Subcommission on Permian Stratigraphy in 1996. The Ci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
