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Banksieaeformis Decurrens
''Banksieaeformis'' is a genus that encompasses plant species only known from fossil leaves that can be attributed to the Proteaceae tribe Banksieae, but cannot be attributed to an extant (living) genus. Unlike those classified in the related genus ''Banksieaephyllum'', the leaves do not have their cuticular architecture preserved. The genus was defined by botanists Bob Hill and David Christophel in 1988 to distinguish banksia-like leaves that had been organically preserved from those that had not. The two authors designated ''Banksieaeformis decurrens'' as the type species. Recovered from middle Eocene deposits at Maslin Bay in South Australia, it is known from a single leaf, 7 cm long and 1 cm wide. The leaf has entire margins in its basal half and pinnate lobes pointed apically in its apical half, which resembles the leaves of the fossil species ''Banksieaephyllum cuneatum'' and ''Banksieaephyllum incisum, B. incisum'', as well as the living species ''Banksia grandis' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Banksieaeformis Decurrens
''Banksieaeformis'' is a genus that encompasses plant species only known from fossil leaves that can be attributed to the Proteaceae tribe Banksieae, but cannot be attributed to an extant (living) genus. Unlike those classified in the related genus ''Banksieaephyllum'', the leaves do not have their cuticular architecture preserved. The genus was defined by botanists Bob Hill and David Christophel in 1988 to distinguish banksia-like leaves that had been organically preserved from those that had not. The two authors designated ''Banksieaeformis decurrens'' as the type species. Recovered from middle Eocene deposits at Maslin Bay in South Australia, it is known from a single leaf, 7 cm long and 1 cm wide. The leaf has entire margins in its basal half and pinnate lobes pointed apically in its apical half, which resembles the leaves of the fossil species ''Banksieaephyllum cuneatum'' and ''Banksieaephyllum incisum, B. incisum'', as well as the living species ''Banksia grandis' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Banksia Burdettii
''Banksia burdettii'', commonly known as Burdett's banksia, is a species of shrub or tree of the genus ''Banksia'' in the family Proteaceae. It occurs on sandplain country north of Gingin, Western Australia. Growing to 4 m (13 ft) in height, it has long serrated leaves and large, bright flower spikes, initially white before opening to a bright orange, that appear mainly in late summer (February and March). Edmund Gilbert Baker described ''B. burdettii'' in 1934, naming it after its collector, W. Burdett. Description ''Banksia burdettii'' grows as an evergreen shrub to a height of . The new growth is hairy, though longer stems are smooth. The sturdy, serrated grey green leaves are long and wide with a narrow oblong or wedge-shape and a truncate tip. The toothed margins are slightly downcurved. Burdett's banksia has cm high flower spikes, known as inflorescences, that prominently displayed on the ends of stems, appearing between the months of January and May, peaking ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eocene Plants
The Eocene ( ) Epoch is a geological epoch that lasted from about 56 to 33.9 million years ago (mya). It is the second epoch of the Paleogene Period in the modern Cenozoic Era. The name ''Eocene'' comes from the Ancient Greek (''ēṓs'', "dawn") and (''kainós'', "new") and refers to the "dawn" of modern ('new') fauna that appeared during the epoch. The Eocene spans the time from the end of the Paleocene Epoch to the beginning of the Oligocene Epoch. The start of the Eocene is marked by a brief period in which the concentration of the carbon isotope 13C in the atmosphere was exceptionally low in comparison with the more common isotope 12C. The end is set at a major extinction event called the ''Grande Coupure'' (the "Great Break" in continuity) or the Eocene–Oligocene extinction event, which may be related to the impact of one or more large bolides in Siberia and in what is now Chesapeake Bay. As with other geologic periods, the strata that define the start and end of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Extinct Flora Of Australia
Extinction is the termination of a kind of organism or of a group of kinds (taxon), usually a species. The moment of extinction is generally considered to be the death of the last individual of the species, although the capacity to breed and recover may have been lost before this point. Because a species' potential range may be very large, determining this moment is difficult, and is usually done retrospectively. This difficulty leads to phenomena such as Lazarus taxa, where a species presumed extinct abruptly "reappears" (typically in the fossil record) after a period of apparent absence. More than 99% of all species that ever lived on Earth, amounting to over five billion species, are estimated to have died out. It is estimated that there are currently around 8.7 million species of eukaryote globally, and possibly many times more if microorganisms, like bacteria, are included. Notable extinct animal species include non-avian dinosaurs, saber-toothed cats, dodos, mam ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prehistoric Angiosperm Genera
Prehistory, also known as pre-literary history, is the period of human history between the use of the first stone tools by hominins 3.3 million years ago and the beginning of recorded history with the invention of writing systems. The use of symbols, marks, and images appears very early among humans, but the earliest known writing systems appeared 5000 years ago. It took thousands of years for writing systems to be widely adopted, with writing spreading to almost all cultures by the 19th century. The end of prehistory therefore came at very different times in different places, and the term is less often used in discussing societies where prehistory ended relatively recently. In the early Bronze Age, Sumer in Mesopotamia, the Indus Valley Civilisation, and ancient Egypt were the first civilizations to develop their own scripts and to keep historical records, with their neighbors following. Most other civilizations reached the end of prehistory during the following Iron Age. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Proteales Of Australia
Proteales is an order of flowering plants consisting of three (or four) families. The Proteales have been recognized by almost all taxonomists. The representatives of the Proteales are very different from each other. The order contains plants that do not look alike at all. What they have in common is seeds with little or no endosperm. The ovules are often atropic. Families In the classification system of Dahlgren the Proteales were in the superorder Proteiflorae (also called Proteanae). The APG II system of 2003 also recognizes this order, and places it in the clade eudicots with this circumscription: * order Proteales :* family Nelumbonaceae :* family Proteaceae family Platanaceae">Platanaceae.html" ;"title=" family Platanaceae"> family Platanaceae with "+ ..." = optionally separate family (that may be split off from the preceding family). The APG III system of 2009 followed this same approach, but favored the narrower circumscription of the three families, firmly reco ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Banksia Chamaephyton
''Banksia chamaephyton'', commonly known as the fishbone banksia, is a species of shrub that is endemic to Western Australia. It has prostrate, underground stems, pinnatipartite leaves, cream-coloured and brown flowers arranged in spikes surrounded by hairy bracts. It grows in kwongan near the lower west coast. Description ''Banksia chamaephyton'' is a shrub that typically grows to high and wide and forms a lignotuber. It has prostrate, underground stems in diameter and hairy when young. The leaves are erect, long, wide on a petiole long and has between ten and thirty linear lobes on each side. The flowers are cream-coloured with a brown tip and arranged in a head long surrounded at the base by velvety involucral bracts. The perianth is long and the pistil curved and long. Flowering occurs from late October to early December and there are up to fifteen elliptic follicles in each head, the follicles long, high and wide. Taxonomy and naming ''Banksia chamaephyton' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Banksieaeformis Praegrandis
''Banksieaeformis'' is a genus that encompasses plant species only known from fossil leaves that can be attributed to the Proteaceae tribe Banksieae, but cannot be attributed to an extant (living) genus. Unlike those classified in the related genus '' Banksieaephyllum'', the leaves do not have their cuticular architecture preserved. The genus was defined by botanists Bob Hill and David Christophel in 1988 to distinguish banksia-like leaves that had been organically preserved from those that had not. The two authors designated ''Banksieaeformis decurrens'' as the type species. Recovered from middle Eocene deposits at Maslin Bay in South Australia, it is known from a single leaf, 7 cm long and 1 cm wide. The leaf has entire margins in its basal half and pinnate lobes pointed apically in its apical half, which resembles the leaves of the fossil species '' Banksieaephyllum cuneatum'' and '' B. incisum'', as well as the living species ''Banksia grandis'', '' B. baxteri'' and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Banksieaeformis Langii
''Banksieaeformis'' is a genus that encompasses plant species only known from fossil leaves that can be attributed to the Proteaceae tribe Banksieae, but cannot be attributed to an extant (living) genus. Unlike those classified in the related genus '' Banksieaephyllum'', the leaves do not have their cuticular architecture preserved. The genus was defined by botanists Bob Hill and David Christophel in 1988 to distinguish banksia-like leaves that had been organically preserved from those that had not. The two authors designated ''Banksieaeformis decurrens'' as the type species. Recovered from middle Eocene deposits at Maslin Bay in South Australia, it is known from a single leaf, 7 cm long and 1 cm wide. The leaf has entire margins in its basal half and pinnate lobes pointed apically in its apical half, which resembles the leaves of the fossil species '' Banksieaephyllum cuneatum'' and '' B. incisum'', as well as the living species ''Banksia grandis'', '' B. baxteri'' and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Banksieaeformis Serratus
''Banksieaeformis'' is a genus that encompasses plant species only known from fossil leaves that can be attributed to the Proteaceae tribe Banksieae, but cannot be attributed to an extant (living) genus. Unlike those classified in the related genus '' Banksieaephyllum'', the leaves do not have their cuticular architecture preserved. The genus was defined by botanists Bob Hill and David Christophel in 1988 to distinguish banksia-like leaves that had been organically preserved from those that had not. The two authors designated ''Banksieaeformis decurrens'' as the type species. Recovered from middle Eocene deposits at Maslin Bay in South Australia, it is known from a single leaf, 7 cm long and 1 cm wide. The leaf has entire margins in its basal half and pinnate lobes pointed apically in its apical half, which resembles the leaves of the fossil species '' Banksieaephyllum cuneatum'' and '' B. incisum'', as well as the living species ''Banksia grandis'', '' B. baxteri'' and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Banksieaephyllum Fastigiatum
''Banksieaephyllum'' is a plant genus that encompasses organically preserved fossil leaves that can be attributed to the Proteaceae tribe Banksieae, but cannot be attributed to a genus. Before 1950, many fossil leaves were attributed to the genera ''Banksia'' and ''Dryandra''. In most cases, leaves with triangular lobes were associated with ''Dryandra'', and leaves with serration were associated with ''Banksia''. In 1950, Isabel Cookson and Suzanne Duigan showed this policy to be flawed, by demonstrating that the leaves of the two genera cannot be reliably distinguished. Since these two genera then comprised tribe Banksieae, Cookson and Duigan erected ''Banksieaephyllum'' to contain such leaves. Since then, ''Banksia'' and ''Dryandra'' have been further grouped into subtribe Banksiinae, and another subtribe, Musgraveinae, erected to contain two new genera. Interpretations of ''Banksieaephyllum'' are now no longer consistent. Some botanists continue to hold that ''Banksieaephyllu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Banksieaephyllum Attenuatum
''Banksieaephyllum'' is a plant genus that encompasses organically preserved fossil leaves that can be attributed to the Proteaceae tribe Banksieae, but cannot be attributed to a genus. Before 1950, many fossil leaves were attributed to the genera ''Banksia'' and ''Dryandra''. In most cases, leaves with triangular lobes were associated with ''Dryandra'', and leaves with serration were associated with ''Banksia''. In 1950, Isabel Cookson and Suzanne Duigan showed this policy to be flawed, by demonstrating that the leaves of the two genera cannot be reliably distinguished. Since these two genera then comprised tribe Banksieae, Cookson and Duigan erected ''Banksieaephyllum'' to contain such leaves. Since then, ''Banksia'' and ''Dryandra'' have been further grouped into subtribe Banksiinae, and another subtribe, Musgraveinae, erected to contain two new genera. Interpretations of ''Banksieaephyllum'' are now no longer consistent. Some botanists continue to hold that ''Banksieaephyllum ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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