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Euchemotrema Fasciatum
''Euchemotrema'' is a genus of small, air-breathing land snails, terrestrial pulmonate gastropod molluscs in the family Polygyridae. Shell description The shell of species in this genus is usually about 8 to 11 mm in diameter (about 3/8 inch). The shells are brown with a velvety surface, similar to that of ''Stenotrema'', and, in fact, this genus is sometimes combined into ''Stenotrema''.Pilsbry, Henry A. 1940. Land Mollusca of North America (North of Mexico)'. Acad. Nat. Sci. Philadelphia, Monograph 3, vol. 1(2): 675-688. These snails typically have a less complex aperture than ''Stenotrema'': "without a tooth within the outer arc of the lip and with no notch in the basal lip". There are also peculiarities of the male anatomy that separate the two genera. Distribution ''Euchemotrema'' is widely distributed in eastern and central North America. Species This genus includes the following species and subspecies: *'' Euchemotrema cheatumi'' (R. W. Fullington, 1974) *'' Euc ... [...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] |
North America
North America is a continent in the Northern Hemisphere and almost entirely within the Western Hemisphere. It is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South America and the Caribbean Sea, and to the west and south by the Pacific Ocean. Because it is on the North American Plate, North American Tectonic Plate, Greenland is included as a part of North America geographically. North America covers an area of about , about 16.5% of Earth's land area and about 4.8% of its total surface. North America is the third-largest continent by area, following Asia and Africa, and the list of continents and continental subregions by population, fourth by population after Asia, Africa, and Europe. In 2013, its population was estimated at nearly 579 million people in List of sovereign states and dependent territories in North America, 23 independent states, or about 7.5% of the world's population. In Americas (terminology)#Human ge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Euchemotrema Wichitorum
The Wichita Mountains pillsnail (''Euchemotrema wichitorum'') is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Polygyridae. The species is endemic to Oklahoma, the United States. Description ''Euchemotrema wichitorum'' was first described in 1972 by Branley A. Branson as ''Stenotrema wichitorum.'' The shell varies from light tan to dark brown. It has an average diameter of 8.3 mm and an average height of 4.6 mm. It is the second smallest species of its genus. Distribution and habitat It is endemic to the Wichita Mountains area in southwest Oklahoma. The type locality is located in the Wichita Mountains Wildlife Refuge. Originally only being known from two counties, it has now been located in seven counties in southwest Oklahoma. It favors oak dense woodlands rather than the granite boulder fields of the area. They have a fire association, and charred Charring is a chemical process of incomplete combustion of certa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Euchemotrema Leai Aliciae
''Euchemotrema'' is a genus of small, air-breathing land snails, terrestrial animal, terrestrial pulmonate gastropod molluscs in the family Polygyridae. Shell description The shell of species in this genus is usually about 8 to 11 mm in diameter (about 3/8 inch). The shells are brown with a velvety surface, similar to that of ''Stenotrema'', and, in fact, this genus is sometimes combined into ''Stenotrema''.Pilsbry, Henry A. 1940. Land Mollusca of North America (North of Mexico)'. Acad. Nat. Sci. Philadelphia, Monograph 3, vol. 1(2): 675-688. These snails typically have a less complex aperture than ''Stenotrema'': "without a tooth within the outer arc of the lip and with no notch in the basal lip". There are also peculiarities of the male anatomy that separate the two genera. Distribution ''Euchemotrema'' is widely distributed in eastern and central North America. Species This genus includes the following species and subspecies: *''Euchemotrema cheatumi'' (R. W. Fulling ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Euchemotrema Leai
''Euchemotrema leai'', common name the lowland pillsnail, is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Polygyridae Polygyridae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Helicoidea. MolluscaBase eds. (2021). MolluscaBase. Polygyridae Pilsbry, 1895. Accessed through: World Register of Marine Species a .... References Polygyridae Gastropods described in 1841 {{Polygyridae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stenotrema Hubrichti
''Stenotrema hubrichti'' is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Polygyridae. This species is endemic to the United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie .... References Polygyridae Endemic molluscs of the United States Gastropods described in 1940 Taxa named by Henry Augustus Pilsbry Taxonomy articles created by Polbot {{Polygyridae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Euchemotrema Hubrichti
''Euchemotrema'' is a genus of small, air-breathing land snails, terrestrial pulmonate gastropod molluscs in the family Polygyridae. Shell description The shell of species in this genus is usually about 8 to 11 mm in diameter (about 3/8 inch). The shells are brown with a velvety surface, similar to that of ''Stenotrema'', and, in fact, this genus is sometimes combined into ''Stenotrema''.Pilsbry, Henry A. 1940. Land Mollusca of North America (North of Mexico)'. Acad. Nat. Sci. Philadelphia, Monograph 3, vol. 1(2): 675-688. These snails typically have a less complex aperture than ''Stenotrema'': "without a tooth within the outer arc of the lip and with no notch in the basal lip". There are also peculiarities of the male anatomy that separate the two genera. Distribution ''Euchemotrema'' is widely distributed in eastern and central North America. Species This genus includes the following species and subspecies: *'' Euchemotrema cheatumi'' (R. W. Fullington, 1974) *'' Euc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Euchemotrema Fraternum Montanum
''Euchemotrema'' is a genus of small, air-breathing land snails, terrestrial animal, terrestrial pulmonate gastropod molluscs in the family Polygyridae. Shell description The shell of species in this genus is usually about 8 to 11 mm in diameter (about 3/8 inch). The shells are brown with a velvety surface, similar to that of ''Stenotrema'', and, in fact, this genus is sometimes combined into ''Stenotrema''.Pilsbry, Henry A. 1940. Land Mollusca of North America (North of Mexico)'. Acad. Nat. Sci. Philadelphia, Monograph 3, vol. 1(2): 675-688. These snails typically have a less complex aperture than ''Stenotrema'': "without a tooth within the outer arc of the lip and with no notch in the basal lip". There are also peculiarities of the male anatomy that separate the two genera. Distribution ''Euchemotrema'' is widely distributed in eastern and central North America. Species This genus includes the following species and subspecies: *''Euchemotrema cheatumi'' (R. W. Fulling ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Euchemotrema Fasciatum
''Euchemotrema'' is a genus of small, air-breathing land snails, terrestrial pulmonate gastropod molluscs in the family Polygyridae. Shell description The shell of species in this genus is usually about 8 to 11 mm in diameter (about 3/8 inch). The shells are brown with a velvety surface, similar to that of ''Stenotrema'', and, in fact, this genus is sometimes combined into ''Stenotrema''.Pilsbry, Henry A. 1940. Land Mollusca of North America (North of Mexico)'. Acad. Nat. Sci. Philadelphia, Monograph 3, vol. 1(2): 675-688. These snails typically have a less complex aperture than ''Stenotrema'': "without a tooth within the outer arc of the lip and with no notch in the basal lip". There are also peculiarities of the male anatomy that separate the two genera. Distribution ''Euchemotrema'' is widely distributed in eastern and central North America. Species This genus includes the following species and subspecies: *'' Euchemotrema cheatumi'' (R. W. Fullington, 1974) *'' Euc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Euchemotrema Cheatumi
''Euchemotrema'' is a genus of small, air-breathing land snails, terrestrial pulmonate gastropod molluscs in the family Polygyridae. Shell description The shell of species in this genus is usually about 8 to 11 mm in diameter (about 3/8 inch). The shells are brown with a velvety surface, similar to that of ''Stenotrema'', and, in fact, this genus is sometimes combined into ''Stenotrema''.Pilsbry, Henry A. 1940. Land Mollusca of North America (North of Mexico)'. Acad. Nat. Sci. Philadelphia, Monograph 3, vol. 1(2): 675-688. These snails typically have a less complex aperture than ''Stenotrema'': "without a tooth within the outer arc of the lip and with no notch in the basal lip". There are also peculiarities of the male anatomy that separate the two genera. Distribution ''Euchemotrema'' is widely distributed in eastern and central North America. Species This genus includes the following species and subspecies: *'' Euchemotrema cheatumi'' (R. W. Fullington, 1974) *''Euch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stenotrema
''Stenotrema'' is a genus of air-breathing land snails, terrestrial animal, terrestrial pulmonate gastropod molluscs in the family Polygyridae. These are typically small to medium-sized snails, with a velvety or hairy gastropod shell, shell surface, and a narrow aperture (mollusc), aperture which is usually closely guarded by well-developed "teeth". Distribution The genus occurs throughout most of North America, from Alaska, though Canada and the United States, into Mexico.Pilsbry, Henry A. 1940. ''Land Mollusca of North America (North of Mexico)''. Acad. Nat. Sci. Philadelphia, Monograph 3, vol. 1(2): 639-688. Species Genus ''Stenotrema'' contains the following species and subspecies: *''Stenotrema altispira'' (Pilsbry, 1894) *''Stenotrema angellum'' Hubricht, 1858 *''Stenotrema barbigerum'' (Redfield, 1856) *''Stenotrema blandianum'' (Pilsbry, 1903) *''Stenotrema brevipila'' (Clap, 1907) *''Stenotrema burringtoni'' Grimm, 1971 *''Stenotrema calvescens'' Hubricht, 1961 *''Sten ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Euchemotrema Fraternum
''Euchemotrema fraternum'' is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Polygyridae Polygyridae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Helicoidea. MolluscaBase eds. (2021). MolluscaBase. Polygyridae Pilsbry, 1895. Accessed through: World Register of Marine Species a .... Subspecies *''Euchemotrema fraternum montanum'' (Archer, 1939) References Polygyridae Gastropods described in 1824 {{Polygyridae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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