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Neritodryas Subsulcata
''Neritodryas'' is a genus of freshwater snails, (some of which are amphibious and terrestrial living on trees and bushes); they are gastropod mollusks in the family Neritidae Neritidae, common name the nerites, is a taxonomic family of small to medium-sized saltwater and freshwater snails which have a gill and a distinctive operculum. MolluscaBase eds. (2021). MolluscaBase. Neritininae Poey, 1852. Accessed through: ..., the nerites.MolluscaBase eds. (2021). MolluscaBase. Neritodryas von Martens, 1869. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=818410 on 2021-09-28 The length of the shell is up to 40 mm. Species Species within the genus ''Neritodryas'' include: * '' Neritodryas chimmoi'' (Reeve, 1856) * '' Neritodryas cornea'' (Linnaeus, 1758) - type species of the genus ''Neritodryas'' * '' Neritodryas dubia'' (Gmelin, 1791) * † '' Neritodryas dutemplei'' (Deshayes, 1864) - synonym: ''Nerita dutemple ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Early Eocene
In the geologic timescale the Ypresian is the oldest age or lowest stratigraphic stage of the Eocene. It spans the time between , is preceded by the Thanetian Age (part of the Paleocene) and is followed by the Eocene Lutetian Age. The Ypresian is consistent with the lower Eocene. Events The Ypresian Age begins during the throes of the Paleocene–Eocene Thermal Maximum (PETM). The Fur Formation in Denmark, the Messel shales in Germany, the Oise amber of France and Cambay amber of India are of this age. The Eocene Okanagan Highlands are an uplands subtropical to temperate series of lakes from the Ypresian. Stratigraphic definition The Ypresian Stage was introduced in scientific literature by Belgian geologist André Hubert Dumont in 1850. The Ypresian is named after the Flemish city of Ypres in Belgium (spelled ''Ieper'' in Dutch). The definitions of the original stage were totally different from the modern ones. The Ypresian shares its name with the Belgian Ieper Group (French: ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |