|
Echinarachnius
''Echinarachnius'' is a genus of sand dollars, belonging to the family Echinarachniidae . Kroh, A.; Mooi, R. (2020). World Echinoidea Database. Echinarachnius Gray, 1825. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=158061 on 2020-12-31 Species of ''Echinarachnius'' have been around since the Pliocene epoch. Species *†'' Echinarachnius alaskensis'' Durham, 1957 *'' Echinarachnius asiaticus'' Michelin, 1859 *†'' Echinarachnius humilis'' Nisiyama, 1968 *†'' Echinarachnius kewi'' Grant & Eaton in Eaton, Grant & Allen, 1941 *†'' Echinarachnius naganoensis'' Morishita, 1953 *'' Echinarachnius parma'' (Lamarck, 1816) *†'' Echinarachnius rumoensis'' Hayasaka & Shibata, 1952 *†''Echinarachnius subtumidus ''Echinarachnius'' is a genus of sand dollars, belonging to the family Echinarachniidae . Kroh, A.; Mooi, R. (2020). World Echinoidea Database. Echinarachnius Gray, 1825. Accessed through: World Register ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Echinarachnius Parma
''Echinarachnius parma'', the common sand dollar, is a species of sand dollar native to the Northern Hemisphere.Kroh, A.; Mooi, R. (2020). World Echinoidea Database. Echinarachnius parma (Lamarck, 1816). Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=158062 on 2020-12-31 ;Subspecies: * ''Echinarachnius parma obesus'' H.L. Clark, 1914 * ''Echinarachnius parma parma'' (Lamarck, 1816) * ''Echinarachnius parma sakkalinensis'' Argamakowa, 1934 Distribution It is found in the North Pacific and Northwest Atlantic, on the North American east coast from New Jersey north, as well as in Alaska, Siberia, British Columbia, and Japan. It inhabits isolated areas on sandy bottoms below the low tide level down to a depth of . Description The tests (shells) of these sand dollars are round, flat and disc-like, typically measuring in diameter. The growth rate for this animal is between 3.5 and 6 mm/yr in the latter 5 years of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Echinarachnius Alaskensis
''Echinarachnius'' is a genus of sand dollars, belonging to the family Echinarachniidae . Kroh, A.; Mooi, R. (2020). World Echinoidea Database. Echinarachnius Gray, 1825. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=158061 on 2020-12-31 Species of ''Echinarachnius'' have been around since the Pliocene epoch. Species *†'' Echinarachnius alaskensis'' Durham, 1957 *'' Echinarachnius asiaticus'' Michelin, 1859 *†'' Echinarachnius humilis'' Nisiyama, 1968 *†'' Echinarachnius kewi'' Grant & Eaton in Eaton, Grant & Allen, 1941 *†'' Echinarachnius naganoensis'' Morishita, 1953 *''Echinarachnius parma'' (Lamarck, 1816) *†'' Echinarachnius rumoensis'' Hayasaka & Shibata, 1952 *†''Echinarachnius subtumidus ''Echinarachnius'' is a genus of sand dollars, belonging to the family Echinarachniidae . Kroh, A.; Mooi, R. (2020). World Echinoidea Database. Echinarachnius Gray, 1825. Accessed through: World Register ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Echinarachnius Subtumidus
''Echinarachnius'' is a genus of sand dollars, belonging to the family Echinarachniidae . Kroh, A.; Mooi, R. (2020). World Echinoidea Database. Echinarachnius Gray, 1825. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=158061 on 2020-12-31 Species of ''Echinarachnius'' have been around since the Pliocene epoch. Species *†''Echinarachnius alaskensis'' Durham, 1957 *''Echinarachnius asiaticus'' Michelin, 1859 *†''Echinarachnius humilis'' Nisiyama, 1968 *†''Echinarachnius kewi'' Grant & Eaton in Eaton, Grant & Allen, 1941 *†''Echinarachnius naganoensis'' Morishita, 1953 *''Echinarachnius parma'' (Lamarck, 1816) *†''Echinarachnius rumoensis'' Hayasaka & Shibata, 1952 *†''Echinarachnius subtumidus'' Nisiyama & Hashimoto, 1950 References External links J.E. (1825). An attempt to divide the Echinida, or Sea Eggs, into natural families. Annals of Philosophy, new series. 10:423-431Pomel, A. 1883. Classification ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sand Dollar
Sand dollars (also known as sea cookies or snapper biscuits in New Zealand and Brazil, or pansy shells in South Africa) are species of flat, burrowing sea urchins belonging to the order Clypeasteroida. Some species within the order, not quite as flat, are known as sea biscuits. Sand dollars can also be called "sand cakes" or "cake urchins". Names The term "sand dollar" derives from the appearance of the tests (skeletons) of dead individuals after being washed ashore. The test lacks its velvet-like skin of spines and has often been bleached white by sunlight. To beachcombers of the past, this suggested a large, silver coin, such as the old Spanish dollar, which had a diameter of 38–40 mm. Other names for the sand dollar include ''sand cakes, pansy shells, snapper biscuits, cake urchins'', and ''sea cookies''. In South Africa, they are known as ''pansy shells'' from their suggestion of a five-petaled garden flower. The ''inflated sea biscuit'' or Caribbean sand dollar, ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Echinarachniidae
Echinarachniidae is a family of echinoderms belonging to the order Clypeasteroida. This clade appeared in the Middle Miocene epoch and is still living today in the North Pacific Ocean (California and Japan) ocean to Northeast Canada and Southern United States. Genera Genera: * '' Astrodapsis'' Conrad, 1856 * ''Echinarachnius ''Echinarachnius'' is a genus of sand dollars, belonging to the family Echinarachniidae . Kroh, A.; Mooi, R. (2020). World Echinoidea Database. Echinarachnius Gray, 1825. Accessed through: World Register of Marine Species at: http://www.marine ...'' Gray, 1825 * '' Faassia'' Shmidt, 1971 * '' Kewia'' Nisiyama, 1935 * '' Proescutella'' Pomel, 1883 * '' Pseudastrodapsis'' Durham, 1953 * '' Scutellaster'' Cragin, 1895 * '' Tenuirachnius'' Durham, 1955 * '' Vaquerosella'' Durham, 1955 References Clypeasteroida Echinoderm families {{echinoidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clypeasteroida
Sand dollars (also known as sea cookies or snapper biscuits in New Zealand and Brazil, or pansy shells in South Africa) are species of flat, burrowing sea urchins belonging to the Order (biology), order Clypeasteroida. Some species within the order, not quite as flat, are known as Sea biscuit (echinoderm), sea biscuits. Sand dollars can also be called "sand cakes" or "cake urchins". Names The term "sand dollar" derives from the appearance of the Test (biology), tests (skeletons) of dead individuals after being washed ashore. The test lacks its velvet-like skin of spines and has often been bleached white by sunlight. To beachcombers of the past, this suggested a large, silver coin, such as the old Spanish dollar, which had a diameter of 38–40 mm. Other names for the sand dollar include ''sand cakes, pansy shells, snapper biscuits, cake urchins'', and ''sea cookies''. In South Africa, they are known as ''pansy shells'' from their suggestion of a five-petaled pansy, garden f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pliocene
The Pliocene ( ; also Pleiocene) is the epoch (geology), epoch in the geologic time scale that extends from 5.33 to 2.58See the 2014 version of the ICS geologic time scale million years ago (Ma). It is the second and most recent epoch of the Neogene Period in the Cenozoic, Cenozoic Era. The Pliocene follows the Miocene Epoch and is followed by the Pleistocene Epoch. Prior to the 2009 revision of the geologic time scale, which placed the four most recent major glaciations entirely within the Pleistocene, the Pliocene also included the Gelasian Stage, which lasted from 2.59 to 1.81 Ma, and is now included in the Pleistocene. As with other older geologic periods, the Stratum, geological strata that define the start and end are well-identified but the exact dates of the start a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
