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Castle Hayne Limestone
The Castle Hayne Limestone (also called the Castle Hayne Formation) is a Formation (geology), geologic formation in North Carolina. It consists of cobble to pebble sized clastic rocks, clasts, usually rounded, coated with phosphate and glauconite in a limestone matrix. The Castle Hayne Limestone is known for containing fossils dating back to the Paleogene Period (geology), period. It preserves many of North Carolina's renowned Eocene fossils. It is named after the locality of Castle Hayne, North Carolina, Castle Hayne in New Hanover County, North Carolina, New Hanover county, though the formation itself stretches over several counties. Description The Castle Hayne Formation is divided into three submembers: the New Hanover member, the Comfort Member, and the Spring Garden Member. The New Hanover member is the oldest member and is characterizes by cobbles and pebbles, fine sand, glauconite, and phosphate in a fine limestone matrix. The most common fossils are shark and ray teeth. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Formation (stratigraphy)
A geological formation, or simply formation, is a body of rock having a consistent set of physical characteristics (lithology) that distinguishes it from adjacent bodies of rock, and which occupies a particular position in the layers of rock exposed in a geographical region (the stratigraphic column). It is the fundamental unit of lithostratigraphy, the study of strata or rock layers. A formation must be large enough that it can be mapped at the surface or traced in the subsurface. Formations are otherwise not defined by the thickness (geology), thickness of their rock strata, which can vary widely. They are usually, but not universally, tabular in form. They may consist of a single lithology (rock type), or of alternating beds of two or more lithologies, or even a heterogeneous mixture of lithologies, so long as this distinguishes them from adjacent bodies of rock. The concept of a geologic formation goes back to the beginnings of modern scientific geology. The term was used by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Siliceous Rock
Siliceous rocks are sedimentary rocks that have silica (SiO2) as the principal constituent. The most common siliceous rock is chert; other types include diatomite. They commonly form from silica-secreting organisms such as radiolarians, diatoms, or some types of sponges Sponges, the members of the phylum Porifera (; meaning 'pore bearer'), are a basal animal clade as a sister of the diploblasts. They are multicellular organisms that have bodies full of pores and channels allowing water to circulate through .... References Sedimentary rocks {{Petrology-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geoduck
The Pacific geoduck ("gooey-duck"; ; ''Panopea generosa'') is a species of very large saltwater clam in the family Hiatellidae. The common name is derived from the Lushootseed ( Nisqually) word . The geoduck is native to the coastal waters of the eastern North Pacific Ocean from Alaska to Baja California. The shell of the clam ranges from to over in length, but the extremely long siphons make the clam itself much longer than this: the "neck" or siphons alone can be in length. The geoduck is the largest burrowing clam in the world. It is also one of the longest-living animals of any type, with a typical lifespan of 140 years; the oldest has been recorded at 179 years old. The precise longevity of geoducks can be determined from annual rings deposited in the shell which can be assigned to calendar years of formation through crossdating. These annual rings also serve as an archive of past marine variability. Etymology The name ''geoduck'' is derived from a Lushootseed ( Nis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Panopea (bivalve)
''Panopea'' is a genus of large marine bivalve molluscs or clams in the family Hiatellidae. There are 10 described species in ''Panopea''. Many of them are known under the common name "geoduck". Extant species * '' Panopea abbreviata'' (Valenciennes, 1839) – southern geoduck * '' Panopea australis'' (G.B. Sowerby I, 1833) * '' Panopea bitruncata'' (Conrad, 1872) * '' Panopea generosa'' Gould, 1850 – Pacific geoduck * '' Panopea globosa'' Dall, 1898 – Cortes geoduck * '' Panopea glycimeris'' (Born, 1778) * '' Panopea japonica'' Adams, 1850 – Japanese geoduck * '' Panopea smithae'' Powell, 1950 * ''Panopea zelandica'' Quoy & Gaimard, 1835 – deepwater clam Extinct species Extinct species within this genus include: * †'' Panopea abrupta'' (Conrad, 1849) (extinct Miocene fossil) * †'' Panopea depressa'' Martin 1859 * †'' Panopea dockensis'' Olsson and Petit 1964 * †'' Panopea elongata'' Conrad 1835 * †'' Panopea gastaldii'' Michelotti 1861 * †'' Pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glyptoactis
''Glyptoactis'' is a mostly extinct genus of bivalves in the family Carditidae. They have been recovered from the Castle Hayne Limestone geologic formation in North Carolina and in France. Subgenera and species Subgenera: * †'' Glyptoactis'' (''Claibornicardia'') Stenzel and Krause, 1957 * †'' Glyptoactis'' (''Fasciculicardia'') Maxwell, 1969 * '' Glyptoactis'' (''Glyptoactis'') Stewart, 1930 Species according to the World Register of Marine Species : * †'' Glyptoactis acanthodes'' (Suter, 1917) * †'' Glyptoactis allophyla'' P. A. Maxwell, 1992 * †'' Glyptoactis bartrumi'' (C. A. Fleming, 1950) * †'' Glyptoactis benhami'' (Thomson, 1908) * †'' Glyptoactis faceta'' (Suter, 1917) * †'' Glyptoactis hadra'' (Dall, 1903) * †'' Glyptoactis healyi'' (C. A. Fleming, 1950) * †'' Glyptoactis hebertiana'' (d'Orbigny, 1850) * †'' Glyptoactis nuntia'' (Marwick, 1928) * †'' Glyptoactis subintermedia'' (Suter, 1917) * '' Glyptoactis wendellwoodringi'' (Weisbord, 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ensis Ensis-H
''Ensis'' is a genus of medium-sized edible saltwater clams, littoral bivalve molluscs in the family Pharidae. ''Ensis'', or razor clams, are known in much of Scotland as spoots, for the spouts of water they eject while burrowing into the sand, when visible at low tide. This term may also colloquially include members of the genus '' Solen''. ''Ensis magnus'' are known as bendies due to their slightly curved shell. Description The shells are long, narrow, and parallel-sided. This shape resembles a closed, old-fashioned straight razor (a cut-throat razor), or a closed jackknife ( pocket knife) and sometimes these clams are known as razor shells or jackknives. The shells in these species are fragile and can easily be damaged when digging for these clams. Ecology ''Ensis'' species live in clean sand on exposed beaches. They are capable of digging very rapidly; see the description under the Atlantic jackknife clam. Some clammers catch jackknives by pouring salt on the characteristi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ensis
''Ensis'' is a genus of medium-sized edible saltwater clams, littoral bivalve molluscs in the family Pharidae. ''Ensis'', or razor clams, are known in much of Scotland as spoots, for the spouts of water they eject while burrowing into the sand, when visible at low tide. This term may also colloquially include members of the genus '' Solen''. ''Ensis magnus'' are known as bendies due to their slightly curved shell. Description The shells are long, narrow, and parallel-sided. This shape resembles a closed, old-fashioned straight razor (a cut-throat razor), or a closed jackknife (pocket knife) and sometimes these clams are known as razor shells or jackknives. The shells in these species are fragile and can easily be damaged when digging for these clams. Ecology ''Ensis'' species live in clean sand on exposed beaches. They are capable of digging very rapidly; see the description under the Atlantic jackknife clam. Some clammers catch jackknives by pouring salt on the characteristic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crassatellidae
Crassatellidae is a family of small saltwater clams, marine bivalve molluscs of the order Carditida. Genera and species Genera and species in Crassatellidae include: * †'' Anthonya'' Gabb, 1864 * '' Bathytormus'' Stewart, 1930 * '' Chattina'' M. Huber, 2010 * †'' Chattonia'' Marwick, 1929 * '' Crassasulca'' H. E. Vokes, 1988 * '' Crassatella'' Lamarck, 1799 ** '' Crassatella ponderosa'' Gmelin, 1791 * '' Crassatina'' Kobelt, 1881 * '' Crassinella'' Guppy, 1874 **'' Crassinella dupliniana'' ( Dall, 1903) ** '' Crassinella lunulata'' (Conrad, 1834) – lunate crassinella ** ''Crassinella martinicensis'' (d'Orbigny, 1842) * '' Crenocrassatella'' Habe, 1951 * '' Elsius'' M. Huber, 2015 * '' Eucrassatella'' Iredale, 1924 **'' Eucrassatella fluctuata'' (Carpenter, 1864) ** '' Eucrassatella kingicola'' (Lamarck, 1805) – thickshell clam * '' Fluctiger'' Iredale, 1924 * '' Hybolophus'' Stewart, 1930 * '' Indocrassatella'' Chavan, 1952 * '' Kalolophus'' DeVries, 2016 ** '' Kalolo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crassatella
Crassatella is a genus of saltwater clams, marine bivalve molluscs of the order Carditida.MolluscaBase eds. (2022). MolluscaBase. Crassatella Lamarck, 1799. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=225412 on 2022-04-28 Species * '' Crassatella aequatorialis'' (Jaeckel & Thiele, 1931) * '' Crassatella brasiliensis'' (Dall, 1903) * ''Crassatella capensis Crassatella is a genus of saltwater clams, marine bivalve molluscs Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant ...'' Lamy, 1917 * '' Crassatella crebrilirata'' G. B. Sowerby II, 1870 * †'' Crassatella duplex'' Berezovsky, 2004 * †'' Crassatella gibbosula'' Lamarck, 1805 * '' Crassatella gilchristi'' G. B. Sowerby III, 1904 * †'' Crassatella hellica'' d'Orbigny, 1850 * '' Crassatella knockeri'' E. A. Smith, 1881 * †... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
A Guide To The Fossil Invertebrate Animals In The Department Of Geology And Palaeontology In The British Museum (Natural History) (1907) (14592753318)
A, or a, is the first letter and the first vowel of the Latin alphabet, used in the modern English alphabet, the alphabets of other western European languages and others worldwide. Its name in English is ''a'' (pronounced ), plural ''aes''. It is similar in shape to the Ancient Greek letter alpha, from which it derives. The uppercase version consists of the two slanting sides of a triangle, crossed in the middle by a horizontal bar. The lowercase version can be written in two forms: the double-storey a and single-storey É‘. The latter is commonly used in handwriting and fonts based on it, especially fonts intended to be read by children, and is also found in italic type. In English grammar, " a", and its variant " an", are indefinite articles. History The earliest certain ancestor of "A" is aleph (also written 'aleph), the first letter of the Phoenician alphabet, which consisted entirely of consonants (for that reason, it is also called an abjad to distinguish it fro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
