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Brian Axsmith
Brian J. Axsmith (June 3, 1962 – May 5, 2020) was an American paleobotanist, paleoecologist, and professor of biology at the University of South Alabama, where he taught ecology, evolutionary biology, and the evolution of vascular plants. Axsmith studied the evolutionary history of conifers and vascular plants. He specialized in the Neogene paleobotany of the Gulf Coastal Plain in the present-day United States, especially Alabama and Mississippi, as well as the Mesozoic paleobotany of eastern North America and China. Life and career Axsmith was raised in suburban Philadelphia. He received a Bachelor of Science from Millersville University of Pennsylvania. Axmsith obtained his doctorate in biology from the University of Kansas in 1998. Some of Axsmith's most significant discoveries included the fossilized pollen and needles of the eastern white pine (Pinus strobus) in the Gulf Coastal Plain, which is no longer part of the tree's native range. Additionally, Axsmith uncovered the e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paleobotanist
Paleobotany, which is also spelled as palaeobotany, is the branch of botany dealing with the recovery and identification of plant remains from geological contexts, and their use for the biological reconstruction of past environments (paleogeography), and the evolutionary history of plants, with a bearing upon the evolution of life in general. A synonym is paleophytology. It is a component of paleontology and paleobiology. The prefix ''palaeo-'' means "ancient, old", and is derived from the Greek adjective , . Paleobotany includes the study of terrestrial plant fossils, as well as the study of prehistoric marine photoautotrophs, such as photosynthetic algae, seaweeds or kelp. A closely related field is palynology, which is the study of fossilized and extant spores and pollen. Paleobotany is important in the reconstruction of ancient ecological systems and climate, known as paleoecology and paleoclimatology respectively; and is fundamental to the study of green plant develo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Alabama
The University of Alabama (informally known as Alabama, UA, or Bama) is a public research university in Tuscaloosa, Alabama. Established in 1820 and opened to students in 1831, the University of Alabama is the oldest and largest of the public universities in Alabama as well as the University of Alabama System. It is classified among "R1: Doctoral Universities – Very high research activity". The university offers programs of study in 13 academic divisions leading to bachelor's, master's, education specialist, and doctoral degrees. The only publicly supported law school in the state is at UA. Other academic programs unavailable elsewhere in Alabama include doctoral programs in anthropology, communication and information sciences, metallurgical engineering, music, Romance languages, and social work. As one of the first public universities established in the early 19th century southwestern frontier of the United States, the University of Alabama has left a cultural impr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asia
Asia (, ) is one of the world's most notable geographical regions, which is either considered a continent in its own right or a subcontinent of Eurasia, which shares the continental landmass of Afro-Eurasia with Africa. Asia covers an area of , about 30% of Earth's total land area and 8.7% of Earth's total surface area. The continent, which has long been home to the majority of the human population, was the site of many of the first civilizations. Its 4.7 billion people constitute roughly 60% of the world's population. In general terms, Asia is bounded on the east by the Pacific Ocean, on the south by the Indian Ocean, and on the north by the Arctic Ocean. The border of Asia with Europe is a historical and cultural construct, as there is no clear physical and geographical separation between them. It is somewhat arbitrary and has moved since its first conception in classical antiquity. The division of Eurasia into two continents reflects East–West cultural, ling ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mobile County, Alabama
Mobile County ( ) is located in the southwestern corner of the U.S. state of Alabama. It is the second most-populous county in the state after Jefferson County. As of the 2020 census, its population was 414,809. Its county seat is Mobile, which was founded as a deepwater port on the Mobile River. The only such port in Alabama, it has long been integral to the economy for providing access to inland waterways as well as the Gulf of Mexico. The city, river, and county were named in honor of '' Maubila'', a village of the paramount chief Tuskaloosa of the regional Mississippian culture. In 1540 he arranged an ambush of soldiers of Hernando de Soto's expedition in an effort to expel them from the territory. The Spaniards were armed with guns and killed many of the tribe. Mobile County and Washington County, Alabama make up the Mobile Metropolitan Statistical Area with a 2020 population of 430,197. The Mobile, AL MSA and Daphne-Fairhope-Foley, AL MSA make up the much larger Mobile ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Citronelle Formation
The Citronelle Formation is a Hemphillian geologic formation in Georgia, Alabama, Florida, Mississippi and Louisiana. Fossil content It preserves fossils of:Citronelle Formation at .org * '' Nannippus cf. lenticularis'' * '' Neohipparion eurystyle'' * '' Pomatodelphis inaequalis'' * '' [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pterocarya
''Pterocarya'', often called wingnuts in English, are trees in the walnut family Juglandaceae. They are native to Asia. The botanic name is from Ancient Greek (''pteron'') "wing" + (''karyon'') " nut". Description ''Pterocarya'' are deciduous trees, 10–40 m tall, with pinnate leaves 20–45 cm long, with 11–25 leaflets; the shoots have chambered pith, a character shared with the walnuts (''Juglans'') but not the hickories (''Carya'') in the same family. The flowers are monoecious, in catkins. The seed catkins when mature (about six months after pollination) are pendulous, 15–45 cm long, with 20–80 seeds strung along them. The seeds are a small nut 5–10 mm across, with two wings, one each side. In some of the species, the wings are short (5–10 mm) and broad (5–10 mm), in others longer (10–25 mm) and narrower (2–5 mm). Species There are six species. Another species from China, the wheel wingnut with similar foliage ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hornbeam
Hornbeams are hardwood trees in the flowering plant genus ''Carpinus'' in the birch family Betulaceae. The 30–40 species occur across much of the temperate regions of the Northern Hemisphere. Origin of names The common English name ''hornbeam'' derives from the hardness of the woods (likened to horn) and the Old English ''beam'' "tree" (cognate with Dutch ‘’Boom’’ and German ''Baum''). The American hornbeam is also occasionally known as blue-beech, ironwood, or musclewood, the first from the resemblance of the bark to that of the American beech ''Fagus grandifolia'', the other two from the hardness of the wood and the muscled appearance of the trunk and limbs. The botanical name for the genus, ''Carpinus'', is the original Latin name for the European species, although some etymologists derive it from the Celtic for a yoke. Taxonomy Formerly some taxonomists segregated them with the genera ''Corylus'' (hazels) and '' Ostrya'' ( hop-hornbeams) in a separate family, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carpinus
Hornbeams are hardwood trees in the flowering plant genus ''Carpinus'' in the birch family Betulaceae. The 30–40 species occur across much of the temperate regions of the Northern Hemisphere. Origin of names The common English name ''hornbeam'' derives from the hardness of the woods (likened to horn) and the Old English ''beam'' "tree" (cognate with Dutch ‘’Boom’’ and German ''Baum''). The American hornbeam is also occasionally known as blue-beech, ironwood, or musclewood, the first from the resemblance of the bark to that of the American beech ''Fagus grandifolia'', the other two from the hardness of the wood and the muscled appearance of the trunk and limbs. The botanical name for the genus, ''Carpinus'', is the original Latin name for the European species, although some etymologists derive it from the Celtic for a yoke. Taxonomy Formerly some taxonomists segregated them with the genera ''Corylus'' (hazels) and '' Ostrya'' ( hop-hornbeams) in a separate family, Co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eocene
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 e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Native Range
Species distribution —or species dispersion — is the manner in which a biological taxon is spatially arranged. The geographic limits of a particular taxon's distribution is its range, often represented as shaded areas on a map. Patterns of distribution change depending on the scale at which they are viewed, from the arrangement of individuals within a small family unit, to patterns within a population, or the distribution of the entire species as a whole (range). Species distribution is not to be confused with dispersal, which is the movement of individuals away from their region of origin or from a population center of high density. Range In biology, the range of a species is the geographical area within which that species can be found. Within that range, distribution is the general structure of the species population, while dispersion is the variation in its population density. Range is often described with the following qualities: * Sometimes a distinction is made betw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pinus Strobus
''Pinus strobus'', commonly called the eastern white pine, northern white pine, white pine, Weymouth pine (British), and soft pine is a large pine native to eastern North America. It occurs from Newfoundland, Canada west through the Great Lakes region to southeastern Manitoba and Minnesota, United States, and south along the Appalachian Mountains and upper Piedmont to northernmost Georgia and perhaps very rarely in some of the higher elevations in northeastern Alabama. It is considered rare in Indiana. The Native American Haudenosaunee named it the " Tree of Peace". It is known as the "Weymouth pine" in the United Kingdom, after Captain George Weymouth of the British Royal Navy, who brought its seeds to England from Maine in 1605. Distribution ''P. strobus'' is found in the nearctic temperate broadleaf and mixed forests biome of eastern North America. It prefers well-drained or sandy soils and humid climates, but can also grow in boggy areas and rocky highlands. In mixed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
