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Gluteus Minimus (fossil)
''Gluteus minimus'' is an extinct species of animal from the Late Devonian (Frasnian-Famennian) of Iowa that is the only species within the genus ''Gluteus''. It was first collected in 1902, but only described in 1975 and the holotype is SUI 34978-91. Each animal appears as a bi-lobed lens up to , and almost all specimens share the same slight asymmetry. The species is of uncertain affinities, having been variously thought of as either a fish tooth, brachiopod, or an otolith. Collection history Specimens of ''G. minimus'' were first collected by Stuart Weller in 1902, from the Maple Mill Shale near Maple Mill on the English River, Washington County, Iowa. The Upper Devonian Maple Mill Shale appears as a series of shale lenses which are rich in fossils, including conodonts, fish remains, possible sporocarps, gastropods, brachiopods, bivalves, and scolecodonts. At a similar time to Weller's collections, Charles Rochester Eastman collected specimens from the Kinderhook Be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Late Devonian
The Devonian ( ) is a geologic period and system of the Paleozoic era, spanning 60.3 million years from the end of the Silurian, million years ago (Mya), to the beginning of the Carboniferous, Mya. It is named after Devon, England, where rocks from this period were first studied. The first significant adaptive radiation of life on dry land occurred during the Devonian. Free-sporing vascular plants began to spread across dry land, forming extensive forests which covered the continents. By the middle of the Devonian, several groups of plants had evolved leaves and true roots, and by the end of the period the first seed-bearing plants appeared. The arthropod groups of myriapods, arachnids and hexapods also became well-established early in this period, after starting their expansion to land at least from the Ordovician period. Fish reached substantial diversity during this time, leading the Devonian to often be dubbed the Age of Fishes. The placoderms began dominating al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish
Fish are aquatic, craniate, gill-bearing animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish as well as various extinct related groups. Approximately 95% of living fish species are ray-finned fish, belonging to the class Actinopterygii, with around 99% of those being teleosts. The earliest organisms that can be classified as fish were soft-bodied chordates that first appeared during the Cambrian period. Although they lacked a true spine, they possessed notochords which allowed them to be more agile than their invertebrate counterparts. Fish would continue to evolve through the Paleozoic era, diversifying into a wide variety of forms. Many fish of the Paleozoic developed external armor that protected them from predators. The first fish with jaws appeared in the Silurian period, after which many (such as sharks) became formidable marine predators rather than just the prey of arthropods. Mos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Cincinnati
The University of Cincinnati (UC or Cincinnati) is a public research university in Cincinnati, Ohio. Founded in 1819 as Cincinnati College, it is the oldest institution of higher education in Cincinnati and has an annual enrollment of over 44,000 students, making it the second largest university in Ohio. It is part of the University System of Ohio. The university has four major campuses, with Cincinnati's main uptown campus and medical campus in the Heights and Corryville neighborhoods, and branch campuses in Batavia and Blue Ash, Ohio. The university has 14 constituent colleges, with programs in architecture, business, education, engineering, humanities, the sciences, law, music, and medicine. The medical college includes a leading teaching hospital and several biomedical research laboratories, with developments made including a live polio vaccine and diphenhydramine. UC was also the first university to implement a co-operative education (co-op) model. The university is accre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alpha Taxonomy
In biology, taxonomy () is the science, scientific study of naming, defining (Circumscription (taxonomy), circumscribing) and classifying groups of biological organisms based on shared characteristics. Organisms are grouped into taxon, taxa (singular: taxon) and these groups are given a taxonomic rank; groups of a given rank can be aggregated to form a more inclusive group of higher rank, thus creating a taxonomic hierarchy. The principal ranks in modern use are domain (biology), domain, kingdom (biology), kingdom, phylum (''division'' is sometimes used in botany in place of ''phylum''), class (biology), class, order (biology), order, family (biology), family, genus, and species. The Swedish botanist Carl Linnaeus is regarded as the founder of the current system of taxonomy, as he developed a ranked system known as Linnaean taxonomy for categorizing organisms and binomial nomenclature for naming organisms. With advances in the theory, data and analytical technology of biologica ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Columbus City, Iowa
Columbus City is a city in western Louisa County, Iowa, United States. The population was 392 at the 2020 census. It is part of the Muscatine Micropolitan Statistical Area. History Columbus City was platted in the 1840s. Geography Columbus City is located two miles southwest of Columbus Junction and the Iowa River.''Iowa Atlas & Gazetteer,'' DeLorme, 7th Edition, 2021 p. 51 According to the United States Census Bureau, the city has a total area of , all land. Demographics 2010 census At the 2010 census there were 391 people in 146 households, including 99 families, in the city. The population density was . There were 155 housing units at an average density of . The racial makup of the city was 74.2% White, 3.1% Asian, 22.0% from other races, and 0.8% from two or more races. Hispanic or Latino of any race were 41.9%. Of the 146 households 34.9% had children under the age of 18 living with them, 53.4% were married couples living together, 9.6% had a female householder ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Floyd County, Iowa
Floyd County is a county located in the U.S. state of Iowa. As of the 2020 census, the population was 15,627. The county seat is Charles City. History Floyd County was established in 1854 and was named for Sergeant Charles Floyd of the Lewis and Clark Expedition, who died in 1804 near what is now Sioux City, Iowa, and who was the only member to die on the Expedition. The first school in the county was taught at Nora Springs in 1854. The second was opened at Charles City, the third at Floyd. Twelve years later there were 54 schools in the county, in September 1875, there were 100 school-houses in Floyd County. Geography According to the U.S. Census Bureau, the county has a total area of , of which is land and (0.1%) is water. Major highways * U.S. Highway 18 * U.S. Highway 218 * Iowa Highway 14 * Iowa Highway 27 Adjacent counties * Mitchell County (north) *Chickasaw County (east) * Butler County (south) *Cerro Gordo County (west) * Howard County (northeast) * Brem ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lime Creek Formation
The Lime Creek Formation is a Formation (geology), geologic formation in Iowa. It preserves fossils dating back to the Devonian Period (geology), period. See also * List of fossiliferous stratigraphic units in Iowa * Paleontology in Iowa References * Devonian Iowa Devonian southern paleotemperate deposits {{Devonian-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fieldiana
The Field Museum of Natural History (FMNH), also known as The Field Museum, is a natural history museum in Chicago, Illinois, and is one of the largest such museums in the world. The museum is popular for the size and quality of its educational and scientific programs, and its extensive scientific-specimen and artifact collections. The permanent exhibitions, which attract up to two million visitors annually, include fossils, current cultures from around the world, and interactive programming demonstrating today's urgent conservation needs. The museum is named in honor of its first major benefactor, Marshall Field, the department-store magnate. The museum and its collections originated from the 1893 World's Columbian Exposition and the artifacts displayed at the fair. The museum maintains a temporary exhibition program of traveling shows as well as in-house produced topical exhibitions. The professional staff maintains collections of over 24 million specimens and objects tha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Des Moines County, Iowa
Des Moines County is located in the U.S. state of Iowa. As of the 2020 census, the population was 38,910. The county seat and largest city is Burlington. It is one of Iowa's two original counties along with Dubuque County; both were organized by the Michigan Territorial legislature in 1834. Des Moines County is part of the Burlington, IA– IL Micropolitan Statistical Area. Des Moines County should not be confused with the city of Des Moines, which is the capital of Iowa. Des Moines County sits on Iowa's eastern border alongside the Mississippi River. The city of Des Moines is in Polk County in central Iowa. Both places derive their name from the Des Moines River, which flows through the city of Des Moines and originally flowed through the county. When the county was divided early in Iowa's history, the river ended up further west, forming the border between Lee County, Iowa and the state of Missouri. History At an extra session of the Sixth Legislative Assembly of Mic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Burlington, Iowa
Burlington is a city in, and the county seat of, Des Moines County, Iowa, United States. The population was 23,982 in the 2020 census, a decline from the 26,839 population in 2000. Burlington is the center of a micropolitan area, which includes West Burlington and Middletown, Iowa, and Gulfport, Illinois. Burlington is the home of Snake Alley, the most crooked street. History Prior to European settlement, the area was neutral territory for the Sac and Fox Native American tribes, who called it Shoquoquon (''Shok-ko-kon''), meaning Flint Hills. In 1803, President Thomas Jefferson organized two parties of explorers to map the Louisiana Purchase. The Lewis and Clark Expedition followed the Missouri River, while Lt. Zebulon Pike followed the Mississippi River. In 1805, Pike landed at the bluffs below Burlington and raised the United States Flag for the first time on what would become Iowa soil and recommended construction of a fort. The recommendation went unheeded. The Am ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Micropaleontology (journal)
Micropaleontology (American spelling; spelled micropalaeontology in European usage) is the branch of paleontology (palaeontology) that studies microfossils, or fossils that require the use of a microscope to see the organism, its morphology and its characteristic details. Microfossils Microfossils are fossils that are generally between 0.001mm and 1 mm in size, the study of which requires the use of light or electron microscopy. Fossils which can be studied by the naked eye or low-powered magnification, such as a hand lens, are referred to as macrofossils. For example, some colonial organisms, such as Bryozoa (especially the Cheilostomata) have relatively large colonies, but are classified by fine skeletal details of the small individuals of the colony. In another example, many fossil genera of Foraminifera, which are protists are known from shells (called "tests") that were as big as coins, such as the genus '' Nummulites''. Microfossils are a common feature of the g ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scolecodont
A scolecodont is the jaw of a polychaete annelid, a common type of fossil-producing segmented worm useful in invertebrate paleontology. Scolecodonts are common and diverse microfossils, which range from the Cambrian period (around half a billion years ago at the start of the Paleozoic era) to the present. They diversified profusely in the Ordovician, and are most common in the Ordovician, Silurian and Devonian marine deposits of the Paleozoic era. Relatedly, more problematic worm-like fossils have been described in even older, Neoproterozoic era deposits in the Ediacaran Hills of southern Australia and in mid-Cambrian deposits of Burgess shale in British Columbia. Since the other classes of annelids (specifically, the earthworms and leeches) lack hard parts, only the sea-dwelling polychaetes are frequently represented in the fossil record. Polychaetes are commonly fossilized due to their chitinous teeth and their dwelling tubes made of durable calcite (a calcium carbonate), ha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
