Scientists from Cardiff University have discovered specific conditions that occur along the ocean floor where two tectonic plates are more likely to slowly creep past one another as opposed to drastically slipping and creating ...
Earth Sciences
Jun 02, 2020
0
38
Yale geophysicists reported that Earth's ever-shifting, underground network of tectonic plates was firmly in place more than 4 billion years ago—at least a billion years earlier than scientists generally thought.
Earth Sciences
May 27, 2020
1
119
An international study led by Monash University has revealed a new mechanism that may have changed the state of the Earth's crust some 2.5 billion years ago.
Earth Sciences
Apr 15, 2020
0
229
In Jessica Barnes' palm is an ancient, coin-sized mosaic of glass, minerals and rocks as thick as a strand of wool fiber. It is a slice of Martian meteorite, known as Northwest Africa 7034 or Black Beauty, that was formed ...
Space Exploration
Mar 30, 2020
1
352
Sifting through diamond exploration samples from Baffin Island, Canadian scientists have identified a new remnant of the North Atlantic craton—an ancient part of Earth's continental crust.
Earth Sciences
Mar 20, 2020
13
4697
Over the last century, scientists have developed methods to map the structures within the Earth's crust, in order to identify resources such as oil reserves, geothermal sources, and, more recently, reservoirs where excess ...
Earth Sciences
Mar 02, 2020
1
168
Fresh evidence of how the continent of Zealandia was created has been published by an international team of scientists co-led by Te Herenga Waka—Victoria University of Wellington's Professor Rupert Sutherland.
Earth Sciences
Feb 07, 2020
6
205
New international research led by the University of St Andrews presents a novel way to understand the structure and formation of our oldest continents.
Earth Sciences
Jan 27, 2020
2
71
Under constant stress, certain soft materials reorganize themselves in a manner very similar to how the Earth's crust is restructured during earthquakes, a new study by researchers at the Indian Institute of Science (IISc), ...
Condensed Matter
Jan 08, 2020
0
75
A University of Wyoming researcher and his colleagues have shown that much of the southwestern United States was once a vast high-elevation plateau, similar to Tibet today.
Earth Sciences
Dec 03, 2019
4
215
Thylacocephala? Branchiopoda
Remipedia Cephalocarida Maxillopoda
Ostracoda
Malacostraca
Crustaceans (Crustacea) form a very large group of arthropods, usually treated as a subphylum, which includes such familiar animals as crabs, lobsters, crayfish, shrimp, krill and barnacles. The 50,000 described species range in size from Stygotantulus stocki at 0.1 mm (0.004 in), to the Japanese spider crab with a leg span of up to 12.5 ft (3.8 m) and a mass of 44 lb (20 kg). Like other arthropods, crustaceans have an exoskeleton, which they moult to grow. They are distinguished from other groups of arthropods, such as insects, myriapods and chelicerates, by the possession of biramous (two-parted) limbs, and by the nauplius form of the larvae.
Most crustaceans are free-living aquatic animals, but some are terrestrial (e.g. woodlice), some are parasitic (e.g. fish lice, tongue worms) and some are sessile (e.g. barnacles). The group has an extensive fossil record, reaching back to the Cambrian, and includes living fossils such as Triops cancriformis, which has existed apparently unchanged since the Triassic period. More than 10 million tons of crustaceans are produced by fishery or farming for human consumption, the majority of it being shrimps and prawns. Krill and copepods are not as widely fished, but may be the animals with the greatest biomass on the planet, and form a vital part of the food chain. The scientific study of crustaceans is known as carcinology (alternatively, malacostracology, crustaceology or crustalogy), and a scientist who works in carcinology is a carcinologist.
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