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Lopha Frons
''Lopha'' is a genus of marine bivalve molluscs in the family Ostreidae. The genus ''Lopha'' is present from the Triassic period in the Lower Norian age (216.5 ± 2.0 – 203.6 ± 1.5 Mya) to the recent age. Description ''Lopha'' species have thick, strongly ribbed shells with unequal valves. The margins of the valves have a characteristic zig-zag pattern. The lower valve shows finger-like outgrowths, by which the molluscs adhere to the substrate. These molluscs are stationary, epifaunal, suspension feeders, as they feed by filtering sea water to extract the nutrients. Species * '' Lopha affinis'' Sowerby, 1871 * ''Lopha capsa'' Fischer von Waldheim, 1808 * ''Lopha chemnitzii'' Hanley, 1846 * '' Lopha cristagalli'' C. Linnaeus, 1758 * '' Lopha frons'' C. Linnaeus, 1758 * ''Lopha imbricata'' J. B. Lamarck, 1819 * ''Lopha rosacea'' G. P. Deshayes, 1836 Fossil species *''Lopha gregarea'', Oxfordian (stage) (160 mya) *'' Lopha marshii'' (Sowerby, 1914), Bajocian In the geo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Triassic
The Triassic ( ) is a geologic period and system which spans 50.6 million years from the end of the Permian Period 251.902 million years ago ( Mya), to the beginning of the Jurassic Period 201.36 Mya. The Triassic is the first and shortest period of the Mesozoic Era. Both the start and end of the period are marked by major extinction events. The Triassic Period is subdivided into three epochs: Early Triassic, Middle Triassic and Late Triassic. The Triassic began in the wake of the Permian–Triassic extinction event, which left the Earth's biosphere impoverished; it was well into the middle of the Triassic before life recovered its former diversity. Three categories of organisms can be distinguished in the Triassic record: survivors from the extinction event, new groups that flourished briefly, and other new groups that went on to dominate the Mesozoic Era. Reptiles, especially archosaurs, were the chief terrestrial vertebrates during this time. A specialized subgroup of archo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lopha Chemnitzii
''Lopha'' is a genus of marine bivalve molluscs in the family Ostreidae. The genus ''Lopha'' is present from the Triassic period in the Lower Norian age (216.5 ± 2.0 – 203.6 ± 1.5 Mya) to the recent age. Description ''Lopha'' species have thick, strongly ribbed shells with unequal valves. The margins of the valves have a characteristic zig-zag pattern. The lower valve shows finger-like outgrowths, by which the molluscs adhere to the substrate. These molluscs are stationary, epifaunal, suspension feeders, as they feed by filtering sea water to extract the nutrients. Species * '' Lopha affinis'' Sowerby, 1871 * ''Lopha capsa'' Fischer von Waldheim, 1808 * '' Lopha chemnitzii'' Hanley, 1846 * '' Lopha cristagalli'' C. Linnaeus, 1758 * '' Lopha frons'' C. Linnaeus, 1758 * '' Lopha imbricata'' J. B. Lamarck, 1819 * '' Lopha rosacea'' G. P. Deshayes, 1836 Fossil species *'' Lopha gregarea'', Oxfordian (stage) (160 mya) *'' Lopha marshii'' (Sowerby, 1914), Bajocian In the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bajocian
In the geologic timescale, the Bajocian is an age and stage in the Middle Jurassic. It lasted from approximately 170.3 Ma to around 168.3 Ma (million years ago). The Bajocian Age succeeds the Aalenian Age and precedes the Bathonian Age. Stratigraphic definitions The Bajocian Stage takes its name from the Latin name (Bajocae) of the town of Bayeux, in the region of Normandy in France. The stage was named and introduced in scientific literature by French palaeontologist Alcide d'Orbigny in 1842. The base of the Bajocian stage is defined as the place in the stratigraphic column where fossils of the ammonite genus ''Hyperlioceras'' first appear. A global reference profile (a GSSP) for the base is located at Murtinheira, close to Cabo Mondego in Portugal.The GSSP is described by Pavia & Enay (1997) The top of the Bajocian (the base of the Bathonian) is at the first appearance of ammonite species ''Parkinsonia convergens''. Subdivision The Bajocian is often divided into Lower/Early ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lopha Marshii
''Lopha marshii'' is a fossil species of true oyster, a marine bivalve mollusc in the family Ostreidae, the true oysters. This species was present in the Bajocian In the geologic timescale, the Bajocian is an age and stage in the Middle Jurassic. It lasted from approximately 170.3 Ma to around 168.3 Ma (million years ago). The Bajocian Age succeeds the Aalenian Age and precedes the Bathonian Age. Stra ... age (about 170 mya). References Biolib *Sepkoski, Jac Sepkoski's Online Genus Database Ostreidae [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oxfordian (stage)
The Oxfordian is, in the ICS' geologic timescale, the earliest age of the Late Jurassic Epoch, or the lowest stage of the Upper Jurassic Series. It spans the time between 163.5 ± 1.0 Ma and 157.3 ± 1.0 Ma (million years ago). The Oxfordian is preceded by the Callovian and is followed by the Kimmeridgian. Stratigraphic definitions The Oxfordian Stage was called "Clunch Clay and Shale" by William Smith (1815–1816); in 1818 W. Buckland described them under the unwieldy title "Oxford, Forest or Fen Clay". The term Oxfordian was introduced by Alcide d'Orbigny in 1844. The name is derived from the English city of Oxford, where the beds are well developed, but they crop out almost continuously from Dorset to the coast of Yorkshire, generally forming low, broad valleys. They are well exposed at Weymouth, Oxford, Bedford, Peterborough, and in the cliffs at Scarborough, Red Cliff and Gristhorpe Bay. Rocks of this age are found also in Uig and Skye. The base of the Oxfordian Stage ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lopha Gregarea
''Lopha'' is a genus of marine bivalve molluscs in the family Ostreidae. The genus ''Lopha'' is present from the Triassic period in the Lower Norian age (216.5 ± 2.0 – 203.6 ± 1.5 Mya) to the recent age. Description ''Lopha'' species have thick, strongly ribbed shells with unequal valves. The margins of the valves have a characteristic zig-zag pattern. The lower valve shows finger-like outgrowths, by which the molluscs adhere to the substrate. These molluscs are stationary, epifaunal, suspension feeders, as they feed by filtering sea water to extract the nutrients. Species * '' Lopha affinis'' Sowerby, 1871 * ''Lopha capsa'' Fischer von Waldheim, 1808 * ''Lopha chemnitzii'' Hanley, 1846 * '' Lopha cristagalli'' C. Linnaeus, 1758 * '' Lopha frons'' C. Linnaeus, 1758 * '' Lopha imbricata'' J. B. Lamarck, 1819 * '' Lopha rosacea'' G. P. Deshayes, 1836 Fossil species *'' Lopha gregarea'', Oxfordian (stage) (160 mya) *'' Lopha marshii'' (Sowerby, 1914), Bajocian In the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lopha Rosacea
''Lopha'' is a genus of marine bivalve molluscs in the family Ostreidae. The genus ''Lopha'' is present from the Triassic period in the Lower Norian age (216.5 ± 2.0 – 203.6 ± 1.5 Mya) to the recent age. Description ''Lopha'' species have thick, strongly ribbed shells with unequal valves. The margins of the valves have a characteristic zig-zag pattern. The lower valve shows finger-like outgrowths, by which the molluscs adhere to the substrate. These molluscs are stationary, epifaunal, suspension feeders, as they feed by filtering sea water to extract the nutrients. Species * '' Lopha affinis'' Sowerby, 1871 * ''Lopha capsa'' Fischer von Waldheim, 1808 * ''Lopha chemnitzii'' Hanley, 1846 * '' Lopha cristagalli'' C. Linnaeus, 1758 * '' Lopha frons'' C. Linnaeus, 1758 * '' Lopha imbricata'' J. B. Lamarck, 1819 * '' Lopha rosacea'' G. P. Deshayes, 1836 Fossil species *''Lopha gregarea'', Oxfordian (stage) (160 mya) *'' Lopha marshii'' (Sowerby, 1914), Bajocian In the g ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lopha Imbricata
''Lopha'' is a genus of marine bivalve molluscs in the family Ostreidae. The genus ''Lopha'' is present from the Triassic period in the Lower Norian age (216.5 ± 2.0 – 203.6 ± 1.5 Mya) to the recent age. Description ''Lopha'' species have thick, strongly ribbed shells with unequal valves. The margins of the valves have a characteristic zig-zag pattern. The lower valve shows finger-like outgrowths, by which the molluscs adhere to the substrate. These molluscs are stationary, epifaunal, suspension feeders, as they feed by filtering sea water to extract the nutrients. Species * '' Lopha affinis'' Sowerby, 1871 * ''Lopha capsa'' Fischer von Waldheim, 1808 * ''Lopha chemnitzii'' Hanley, 1846 * '' Lopha cristagalli'' C. Linnaeus, 1758 * '' Lopha frons'' C. Linnaeus, 1758 * '' Lopha imbricata'' J. B. Lamarck, 1819 * ''Lopha rosacea'' G. P. Deshayes, 1836 Fossil species *''Lopha gregarea'', Oxfordian (stage) (160 mya) *'' Lopha marshii'' (Sowerby, 1914), Bajocian In the ge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lopha Frons
''Lopha'' is a genus of marine bivalve molluscs in the family Ostreidae. The genus ''Lopha'' is present from the Triassic period in the Lower Norian age (216.5 ± 2.0 – 203.6 ± 1.5 Mya) to the recent age. Description ''Lopha'' species have thick, strongly ribbed shells with unequal valves. The margins of the valves have a characteristic zig-zag pattern. The lower valve shows finger-like outgrowths, by which the molluscs adhere to the substrate. These molluscs are stationary, epifaunal, suspension feeders, as they feed by filtering sea water to extract the nutrients. Species * '' Lopha affinis'' Sowerby, 1871 * ''Lopha capsa'' Fischer von Waldheim, 1808 * ''Lopha chemnitzii'' Hanley, 1846 * '' Lopha cristagalli'' C. Linnaeus, 1758 * '' Lopha frons'' C. Linnaeus, 1758 * ''Lopha imbricata'' J. B. Lamarck, 1819 * ''Lopha rosacea'' G. P. Deshayes, 1836 Fossil species *''Lopha gregarea'', Oxfordian (stage) (160 mya) *'' Lopha marshii'' (Sowerby, 1914), Bajocian In the geo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lopha Cristagalli
''Lopha cristagalli'', the cockscomb oyster, is a species of marine bivalve molluscs in the family Ostreidae The Ostreidae, the true oysters, include most species of molluscs commonly consumed as oysters. Pearl oysters are not true oysters, and belong to the order Pteriida. Like scallops, true oysters have a central adductor muscle, which means the .... Description The cockscomb oyster has a shell reaching a maximum diameter of about 20.5 cm, commonly 10 cm. It has a variable coloration, dark to light purple, and it is a thick, strongly ribbed, and slightly inequivalve shell. The shell inside is porcelaneous, usually purplish-brown or whitish in colour. The margins of the valves have a characteristic zig-zag pattern. The surfaces of both valves have many small, low, and rounded protuberances. These molluscs are stationary epifaunal suspension feeders, as they feed filtering sea water to extract the nutrients. Distribution and habitat This species is wides ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lopha Capsa
''Lopha'' is a genus of marine bivalve molluscs in the family Ostreidae. The genus ''Lopha'' is present from the Triassic period in the Lower Norian age (216.5 ± 2.0 – 203.6 ± 1.5 Mya) to the recent age. Description ''Lopha'' species have thick, strongly ribbed shells with unequal valves. The margins of the valves have a characteristic zig-zag pattern. The lower valve shows finger-like outgrowths, by which the molluscs adhere to the substrate. These molluscs are stationary, epifaunal, suspension feeders, as they feed by filtering sea water to extract the nutrients. Species * '' Lopha affinis'' Sowerby, 1871 * '' Lopha capsa'' Fischer von Waldheim, 1808 * '' Lopha chemnitzii'' Hanley, 1846 * '' Lopha cristagalli'' C. Linnaeus, 1758 * '' Lopha frons'' C. Linnaeus, 1758 * '' Lopha imbricata'' J. B. Lamarck, 1819 * '' Lopha rosacea'' G. P. Deshayes, 1836 Fossil species *'' Lopha gregarea'', Oxfordian (stage) (160 mya) *'' Lopha marshii'' (Sowerby, 1914), Bajocian In th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cretaceous
The Cretaceous ( ) is a geological period that lasted from about 145 to 66 million years ago (Mya). It is the third and final period of the Mesozoic Era, as well as the longest. At around 79 million years, it is the longest geological period of the entire Phanerozoic. The name is derived from the Latin ''creta'', "chalk", which is abundant in the latter half of the period. It is usually abbreviated K, for its German translation ''Kreide''. The Cretaceous was a period with a relatively warm climate, resulting in high eustatic sea levels that created numerous shallow inland seas. These oceans and seas were populated with now- extinct marine reptiles, ammonites, and rudists, while dinosaurs continued to dominate on land. The world was ice free, and forests extended to the poles. During this time, new groups of mammals and birds appeared. During the Early Cretaceous, flowering plants appeared and began to rapidly diversify, becoming the dominant group of plants across the Earth b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
