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Leptoxis Compacta
''Leptoxis compacta'', the oblong rocksnail, is a species of freshwater snail with an operculum (gastropod), operculum, an aquatic gastropod mollusk in the family Pleuroceridae. This species is Endemism, endemic to the Cahaba River in Alabama, United States. It was thought to be extinct due to habitat loss since it had not been collected since 1933, and was formally declared extinct in 2000. The IUCN Red List listed it as extinct in 2006 and in 2012. It was rediscovered in a small section of its previously described habitat in the Cahaba River in 2011, with a formal report published in August 2012.Lamb E. (8 August 2012)Rumors of the Oblong Rocksnail’s Demise Were Somewhat Exaggerated ''Scientific American'', accessed 11 August 2012. Molecular phylogenetics, Molecular systematic analyses are underway to clarify the genetic position of ''Leptoxis compacta''. Distribution ''Leptoxis compacta'' is restricted to a single location in the Cahaba River, where it was rediscovered in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Gould Anthony
John Gould Anthony (17 May 1804, in Providence, Rhode Island – 16 October 1877, in Cambridge, Massachusetts) was an American naturalist who became an expert on malacology, the study of mollusks. Anthony was in charge of the conchology (now malacology) department of Harvard's Museum of Comparative Zoology for over a decade. Biography His school education was slight, and was entirely discontinued when he became 12 years of age. Business pursuits then occupied his attention. He probably first became a clerk for a mercantile concern. Throughout his life, his handwriting was in the classic clerk's or copperplate style. In 1832, he married Anna Whiting Rhodes of Cincinnati Cincinnati ( ) is a city in the U.S. state of Ohio and the county seat of Hamilton County. Settled in 1788, the city is located at the northern side of the confluence of the Licking and Ohio rivers, the latter of which marks the state line wit ..., and in 1835 the family moved to Cincinnati, where fossil m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Map Of The Cahaba River And Select Tributaries - Journal
A map is a symbolic depiction emphasizing relationships between elements of some space, such as objects, regions, or themes. Many maps are static, fixed to paper or some other durable medium, while others are dynamic or interactive. Although most commonly used to depict geography, maps may represent any space, real or fictional, without regard to context or scale, such as in brain mapping, DNA mapping, or computer network topology mapping. The space being mapped may be two dimensional, such as the surface of the earth, three dimensional, such as the interior of the earth, or even more abstract spaces of any dimension, such as arise in modeling phenomena having many independent variables. Although the earliest maps known are of the heavens, geographic maps of territory have a very long tradition and exist from ancient times. The word "map" comes from the , wherein ''mappa'' meant 'napkin' or 'cloth' and ''mundi'' 'the world'. Thus, "map" became a shortened term referrin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Body Whorl
The body whorl is part of the morphology of the shell in those gastropod mollusks that possess a coiled shell. The term is also sometimes used in a similar way to describe the shell of a cephalopod mollusk. In gastropods In gastropods, the body whorl, or last whorl, is the most recently formed and largest whorl (or revolution) of a spiral or helical shell, terminating in the aperture. It is called the "body whorl" because most of the body of the soft parts of the animal fits into this whorl. The proportional size of the body whorl in gastropod shells differs greatly according to the actual shell morphology. For shells in which the rate of whorl expansion of each revolution around the axis is very high, the aperture and the body whorl are large, and the shell tends to be low spired. The shell of the abalone is a good example of this kind of shell. The opposite tendency can sometimes create a high spire with very little whorl increase per revolution. In these instances, e.g. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Whorl (mollusk)
A whorl ( or ) is an individual circle, oval, volution or equivalent in a whorled pattern, which consists of a spiral or multiple concentric objects (including circles, ovals and arcs). Whorls in nature File:Photograph and axial plane floral diagram of Friesodielsia desmoides.jpg, Botanical whorls: sepals, petals, leaves, or branches radiating from a single point (photo and axial cross-section shown) File:Anisus septegyrus1pl.jpg, Mollusc whorls: Each complete 360° turn in the spiral growth of a mollusc shell. File:Baby hairy head DSCN2483.jpg, A hair whorl is a patch of hair growing in a circular direction around a visible center point. File:Fingerprint Whorl.jpg, In a fingerprint, a whorl is each ridge arranged circularly around a central point on the finger. File:Bovine Bone Sample and 430 times Magnification.jpg, In histopathologic architecture, a whorled pattern consists of multiple concentric objects, or a spiral-shaped pattern. Bone tissue is shown. For mollusc wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spire (mollusc)
A spire is a part of the coiled shell of molluscs. The spire consists of all of the whorls except for the body whorl. Each spire whorl represents a rotation of 360°. A spire is part of the shell of a snail, a gastropod mollusc, a gastropod shell, and also the whorls of the shell in ammonites, which are fossil shelled cephalopods. In textbook illustrations of gastropod shells, the tradition (with a few exceptions) is to show most shells with the spire uppermost on the page. The spire, when it is not damaged or eroded, includes the protoconch (also called the nuclear whorls or the larval shell), and most of the subsequent teleoconch whorls (also called the postnuclear whorls), which gradually increase in area as they are formed. Thus the spire in most gastropods is pointed, the tip being known as the "apex". The word "spire" is used, in an analogy to a church spire or rock spire, a high, thin, pinnacle. The "spire angle" is the angle, as seen from the apex, at which a spire ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gastropod Shell
The gastropod shell is part of the body of a Gastropoda, gastropod or snail, a kind of mollusc. The shell is an exoskeleton, which protects from predators, mechanical damage, and dehydration, but also serves for muscle attachment and calcium storage. Some gastropods appear shell-less (slugs) but may have a remnant within the mantle, or in some cases the shell is reduced such that the body cannot be retracted within it (semi-slug). Some snails also possess an operculum that seals the opening of the shell, known as the Aperture (mollusc), aperture, which provides further protection. The study of mollusc shells is known as conchology. The biological study of gastropods, and other molluscs in general, is malacology. Shell morphology terms vary by species group. Shell layers The gastropod shell has three major layers secreted by the Mantle (mollusc), mantle. The calcareous central layer, tracum, is typically made of calcium carbonate precipitated into an organic matrix known as c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leptoxis Compacta Lectotype - Journal
''Leptoxis'' is a genus of freshwater snails with a gill and an operculum, aquatic gastropod mollusks in the family Pleuroceridae. Species within this genus inhabit rocky fast-flowing parts of unpolluted and unimpounded mid-sized rivers in the American mid South and the southern Midwest. Species in the subgenus ''Mudalia'' inhabit rivers and creeks in the Atlantic drainage. Species Species within the genus ''Leptoxis'' include. Those that are extinct are marked with a dagger †. * ''Leptoxis ampla'' (Anthony, 1855) * ''Leptoxis arkansensis'' (Hinkley, 1915) * ''Leptoxis carinata'' (Bruguière, 1792) * Agate rocksnail (''Leptoxis clipeata'' (Smith, 1922)) * Oblong rocksnail (''Leptoxis compacta'') * '' Leptoxis crassa'' (Haldeman 1841) * ''Leptoxis dilatata'' (Conrad, 1835) * Interrupted rocksnail (''Leptoxis foremanii'' (I. Lea, 1843) ) * Maiden rocksnail (''Leptoxis formosa'' (I. Lea, 1860) ) * Rotund rocksnail (''Leptoxis ligata'' (Anthony, 1860)) * Lyrate rocksnail ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Birmingham, Alabama
Birmingham ( ) is a city in the north central region of the U.S. state of Alabama. Birmingham is the seat of Jefferson County, Alabama's most populous county. As of the 2021 census estimates, Birmingham had a population of 197,575, down 1% from the 2020 Census, making it Alabama's third-most populous city after Huntsville and Montgomery. The broader Birmingham metropolitan area had a 2020 population of 1,115,289, and is the largest metropolitan area in Alabama as well as the 50th-most populous in the United States. Birmingham serves as an important regional hub and is associated with the Deep South, Piedmont, and Appalachian regions of the nation. Birmingham was founded in 1871, during the post- Civil War Reconstruction period, through the merger of three pre-existing farm towns, notably, Elyton. It grew from there, annexing many more of its smaller neighbors, into an industrial and railroad transportation center with a focus on mining, the iron and steel industry, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Appalachian Mountains
The Appalachian Mountains, often called the Appalachians, (french: Appalaches), are a system of mountains in eastern to northeastern North America. The Appalachians first formed roughly 480 million years ago during the Ordovician Period. They once reached elevations similar to those of the Alps and the Rocky Mountains before experiencing natural erosion. The Appalachian chain is a barrier to east–west travel, as it forms a series of alternating ridgelines and valleys oriented in opposition to most highways and railroads running east–west. Definitions vary on the precise boundaries of the Appalachians. The United States Geological Survey (USGS) defines the ''Appalachian Highlands'' physiographic division as consisting of 13 provinces: the Atlantic Coast Uplands, Eastern Newfoundland Atlantic, Maritime Acadian Highlands, Maritime Plain, Notre Dame and Mégantic Mountains, Western Newfoundland Mountains, Piedmont, Blue Ridge, Valley and Ridge, St. Lawrence Valley, Appalac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Buck Creek (Cahaba River Tributary)
Buck Creek is a U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map, accessed April 27, 2011 tributary of the Cahaba River that was used to supply water power for manufacturing and industry during the 19th century. Its current use is primarily recreational and as a discharge point for municipal water treatment facilities. Route Buck Creek is entirely contained within Shelby County, Alabama, with a flow direction (generally southeast to northwest) against the prevailing orientation of valleys and ridges in central Alabama. The farthest headwaters of the creek lie on Double Mountain, from where the creek flows south, turning west at Saginaw. Passing under U.S. Route 31, Interstate 65, and State Route 119, Buck Creek turns north and passes Siluria and the cities of Alabaster Alabaster is a mineral or rock that is soft, often used for carving, and is processed for plaster powder. Archaeologists and the stone processing industry use ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Centerville, Alabama
Centerville is an unincorporated community in Conecuh County, Alabama Conecuh County () is a county located in the south central portion of the U.S. state of Alabama. As of the 2020 census the population was 11,597. Its county seat is Evergreen. Its name is believed to be derived from a Creek Indian term meaning ..., United States, located near the communities of Battleground, Westpoint, and Longview. References Unincorporated communities in Conecuh County, Alabama Unincorporated communities in Alabama {{ConecuhCountyAL-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bibb County, Alabama
Bibb County is a county in the central portion of the U.S. state of Alabama. The county is included in the ARC's definition of Appalachia. As of the 24th decennial 2020 census, its population was 22,293. The county seat is Centreville. The county is named in honor of William W. Bibb (1781–1820), the Governor of Alabama Territory (1817–1819) and the first Governor of Alabama (1819–1820, when he died). He is also the namesake for Bibb County, Georgia, where he began his political career. It is a "prohibition" or dry county; however, a few towns have become "wet" by allowing the sale of alcoholic beverages: Woodstock (December 2017), West Blocton (August 2012), Centreville (June 2010), and Brent (May 2010). The Bibb County Courthouse is located in the county seat of Centreville. History Cahawba County was established ("erected") on February 7, 1818, named for the Cahawba River (now more commonly known as Cahaba River). This name came from the Choctaw language word m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
