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Barbatia Gibba
''Barbatia'' is a genus of "bearded" ark clams, marine bivalve mollusks in the family Arcidae, the ark clams. This genus is known in the fossil record from the Jurassic period to the Quaternary period (age range: 167.7 to 0.0 million years ago). These fossils have been found all over the world. Species Species within the genus ''Barbatia'' include: *'' Barbatia amygdalumtostum'' ( Röding, 1798) *'' Barbatia barbata'' (Linnaeus, 1758) *'' Barbatia bullata'' ( Reeve, 1844) *'' Barbatia cancellaria'' (Lamarck, 1819) - red-brown ark *''Barbatia candida'' (Helbling, 1779) - white-beard ark *'' Barbatia clathrata'' *'' Barbatia cometa'' ( Reeve, 1844) *'' Barbatia complanata '' ( Bruguière, 1789) *'' Barbatia divaricata'' (Sowerby, 1833) *'' Barbatia decussata'' ( G. B. Sowerby I, 1833) *'' Barbatia domingensis'' (Lamarck, 1819) - white miniature ark *'' Barbatia foliata'' (Forsskål in Niebuhr, 1775) *'' Barbatia fusca'' Bruguière *'' Barbatia gabonensis'' Oliver & Co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jurassic
The Jurassic ( ) is a Geological period, geologic period and System (stratigraphy), stratigraphic system that spanned from the end of the Triassic Period million years ago (Mya) to the beginning of the Cretaceous Period, approximately Mya. The Jurassic constitutes the middle period of the Mesozoic, Mesozoic Era and is named after the Jura Mountains, where limestone strata from the period were first identified. The start of the Jurassic was marked by the major Triassic–Jurassic extinction event, associated with the eruption of the Central Atlantic magmatic province, Central Atlantic Magmatic Province. The beginning of the Toarcian Stage started around 183 million years ago and is marked by an extinction event associated with widespread Anoxic event, oceanic anoxia, ocean acidification, and elevated temperatures likely caused by the eruption of the Karoo-Ferrar, Karoo-Ferrar large igneous provinces. The end of the Jurassic, however, has no clear boundary with the Cretaceous and i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
