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Laurentaeglyphea
''Laurentaeglyphea neocaledonica'' is a species of glypheoid lobster, and the only species in the genus ''Laurentaeglyphea''. It is known from a single specimen collected on a guyot in the Coral Sea between Australia and New Caledonia. It is thought to be an active predator with colour vision, unlike its nearest living relative, ''Neoglyphea inopinata''. Description ''Laurentaeglyphea'' is known from a single adult female specimen, with a carapace in size. In life, the animal is whitish and marked with red patches, especially on the abdomen and the distal segments of the first pereiopods; the markings are much fainter on the carapace. ''Laurantaeglyphea'' has large reniform (kidney-shaped) eyes, more developed in the lower half than the upper. The epistome, behind the two pairs of antennae on the ventral side, is large, but considerably shorter than that of ''Neoglyphea''. ''Laurantaeglyphea'' has five pairs of pereiopods, all without true chelae (claws). Distribution The si ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neoglyphea
''Neoglyphea inopinata'' is a species of glypheoid lobster, a group thought long extinct before ''Neoglyphea'' was discovered. It is a lobster-like animal, up to around in length, although without claws. It is only known from 17 specimens, caught at two sites – one at the entrance to Manila Bay in the Philippines, and one in the Timor Sea, north of Australia. Due to the small number of specimens available, little is known about the species, but it appears to live up to five years, with a short larval phase. A second species, previously included in ''Neoglyphea'', is now placed in a separate genus, ''Laurentaeglyphea''. Taxonomy ''Neoglyphea inopinata'' was named in 1975 by Jacques Forest and Michèle de Saint Laurent of the ' in Paris. It was based on a single damaged specimen that had been caught by the USFC ''Albatross'' in the Philippines in 1908, and deposited in the United States National Museum. De Saint Laurent examined the unidentified specimen while working on Thala ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neoglyphea Inopinata
''Neoglyphea inopinata'' is a species of glypheoid lobster, a group thought long extinct before ''Neoglyphea'' was discovered. It is a lobster-like animal, up to around in length, although without claws. It is only known from 17 specimens, caught at two sites – one at the entrance to Manila Bay in the Philippines, and one in the Timor Sea, north of Australia. Due to the small number of specimens available, little is known about the species, but it appears to live up to five years, with a short larval phase. A second species, previously included in ''Neoglyphea'', is now placed in a separate genus, ''Laurentaeglyphea''. Taxonomy ''Neoglyphea inopinata'' was named in 1975 by Jacques Forest and Michèle de Saint Laurent of the ' in Paris. It was based on a single damaged specimen that had been caught by the USFC ''Albatross'' in the Philippines in 1908, and deposited in the United States National Museum. De Saint Laurent examined the unidentified specimen while working on Thala ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glypheidae
The Glypheoidea (containing the glypheoid lobsters), is a group of lobster-like decapod crustaceans which forms an important part of fossil faunas, such as the Solnhofen limestone. These fossils included taxa such as ''Glyphea'' (from which the group takes its name), and ''Mecochirus'', mostly with elongated (often semichelate) chelipeds. This group of decapods is a good example of a living fossil, or a lazarus taxon, since until their discovery in the 1970s, the group was considered to have become extinct in the Eocene. The superfamily Glypheoidea comprises five families. The two extant species, ''Neoglyphea inopinata'' and ''Laurentaeglyphea neocaledonica'', are both in the Glypheidae. Prehistoric abundance The first animals attributable to the Glypheoidea appeared in the Permo-Triassic. They were abundant in the Jurassic, but declined from the Cretaceous to the Eocene. Extant taxa The Glypheoidea was originally considered to be a purely fossil group. That opinion had to be a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glypheoidea
The Glypheoidea (containing the glypheoid lobsters), is a group of lobster-like decapod crustaceans which forms an important part of fossil faunas, such as the Solnhofen limestone. These fossils included taxa such as ''Glyphea'' (from which the group takes its name), and ''Mecochirus'', mostly with elongated (often semichelate) chelipeds. This group of decapods is a good example of a living fossil, or a lazarus taxon, since until their discovery in the 1970s, the group was considered to have become extinct in the Eocene. The superfamily Glypheoidea comprises five families. The two extant species, ''Neoglyphea inopinata'' and ''Laurentaeglyphea neocaledonica'', are both in the Glypheidae. Prehistoric abundance The first animals attributable to the Glypheoidea appeared in the Permo-Triassic. They were abundant in the Jurassic, but declined from the Cretaceous to the Eocene. Extant taxa The Glypheoidea was originally considered to be a purely fossil group. That opinion had to be a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pereiopod
The decapod (crustaceans such as a crab, lobster, shrimp or prawn) is made up of 20 body segments grouped into two main body parts: the cephalothorax and the pleon (abdomen). Each segment may possess one pair of appendages, although in various groups these may be reduced or missing. They are, from head to tail: Cephalothorax Head # antennules # antennae #mandibles # first maxillae # second maxillae The head also bears the (usually stalked) compound eyes. The distal portion of a mandible or maxilla which has a sensory function is known as a palp. Thorax / pereon #first maxillipeds #second maxillipeds #third maxillipeds #first pereiopods #second pereiopods #third pereiopods #fourth pereiopods #fifth pereiopods Maxillipeds are appendages modified to function as mouthparts. Particularly in the less advanced decapods, these can be very similar to the pereiopods. Pereiopods are primarily walking legs and are also used for gathering food. They are also the ten legs from which decapods ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Slipper Lobster
Slipper lobsters are a family (Scyllaridae) of about 90 species of achelate crustaceans, in the Decapoda clade Reptantia, found in all warm oceans and seas. They are not true lobsters, but are more closely related to spiny lobsters and furry lobsters. Slipper lobsters are instantly recognisable by their enlarged antennae, which project forward from the head as wide plates. All the species of slipper lobsters are edible, and some, such as the Moreton Bay bug and the Balmain bug (''Ibacus peronii'') are of commercial importance. Description Slipper lobsters have six segments in their heads and eight segments in the thorax, which are collectively covered in a thick carapace. The six segments of the abdomen each bear a pair of pleopods, while the thoracic appendages are either walking legs or maxillipeds. The head segments bear various mouthparts and two pairs of antennae. The first antennae, or ''antennules'', are held on a long flexible stalk, and are used for sensing the env ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sponge
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 them, consisting of jelly-like mesohyl sandwiched between two thin layers of cells. Sponges have unspecialized cells that can transform into other types and that often migrate between the main cell layers and the mesohyl in the process. Sponges do not have nervous, digestive or circulatory systems. Instead, most rely on maintaining a constant water flow through their bodies to obtain food and oxygen and to remove wastes. Sponges were first to branch off the evolutionary tree from the last common ancestor of all animals, making them the sister group of all other animals. Etymology The term ''sponge'' derives from the Ancient Greek word ( 'sponge'). Overview Sponges are similar to other animals in that they are multicellular, he ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scree
Scree is a collection of broken rock fragments at the base of a cliff or other steep rocky mass that has accumulated through periodic rockfall. Landforms associated with these materials are often called talus deposits. Talus deposits typically have a concave upwards form, where the maximum inclination corresponds to the angle of repose of the mean debris particle size. The exact definition of scree in the primary literature is somewhat relaxed, and it often overlaps with both ''talus'' and ''colluvium''. The term ''scree'' comes from the Old Norse term for landslide, ''skriða'', while the term ''talus'' is a French word meaning a slope or embankment. In high-altitude arctic and subarctic regions, scree slopes and talus deposits are typically adjacent to hills and river valleys. These steep slopes usually originate from late-Pleistocene periglacial processes. Notable scree sites in Eastern North America include the Ice Caves at White Rocks National Recreation Area in southern Ve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atoll
An atoll () is a ring-shaped island, including a coral rim that encircles a lagoon partially or completely. There may be coral islands or cays on the rim. Atolls are located in warm tropical or subtropical oceans and seas where corals can grow. Most of the approximately 440 atolls in the world are in the Pacific Ocean. Two different, well-cited models, the subsidence and antecedent karst models, have been used to explain the development of atolls.Droxler, A.W. and Jorry, S.J., 2021. ''The Origin of Modern Atolls: Challenging Darwin's Deeply Ingrained Theory.'' ''Annual Review of Marine Science'', 13, pp.537-573. According to Charles Darwin's ''subsidence model'', the formation of an atoll is explained by the subsidence of a volcanic island around which a coral fringing reef has formed. Over geologic time, the volcanic island becomes extinct and eroded as it subsides completely beneath the surface of the ocean. As the volcanic island subsides, the coral fringing reef becomes a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chesterfield Plateau
Chesterfield may refer to: Places Canada * Rural Municipality of Chesterfield No. 261, Saskatchewan * Chesterfield Inlet, Nunavut United Kingdom *Chesterfield, Derbyshire, a market town in England ** Chesterfield (UK Parliament constituency) ** Borough of Chesterfield, a district of Derbyshire * Chesterfield, Staffordshire, a location in England * Chesterfield House, Westminster United States * Chesterfield, Connecticut * Chesterfield, Idaho ** Chesterfield Historic District listed on the National Register of Historic Places (NRHP) * Chesterfield, Illinois * Chesterfield Township, Macoupin County, Illinois * Chesterfield, Indiana * Chesterfield, Massachusetts, and two districts listed on the NRHP: ** Chesterfield Center Historic District ** West Chesterfield Historic District * Chesterfield, Michigan * Chesterfield Township, Michigan * Chesterfield, Missouri * Chesterfield, New Hampshire * Chesterfield Township, New Jersey ** Chesterfield, New Jersey * Chesterfield, New Yo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
