Land snails are usually preserved as fossilized snail shells or imprints, while preservation of their soft bodies is a rarity. "Our new amber find is truly remarkable for this reason as well," explains Dr. Adrienne Jochum ...
Paleontology & Fossils
Jun 8, 2021
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New evidence gleaned from Antarctic seashells confirms that Earth was already unstable before the asteroid impact that wiped out the dinosaurs.
Earth Sciences
Dec 11, 2019
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The history of life on Earth has been marked five times by events of mass biodiversity extinction caused by extreme natural phenomena. Today, many experts warn that a Sixth Mass Extinction crisis is underway, this time entirely ...
Ecology
Jan 14, 2022
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(PhysOrg.com) -- Snail shells can spiral to the left (sinistral) or to the right (dextral), as determined by a single gene, and a new study has found the advantage of being in the minority sinistral group: they survive predation ...
One of the world's most beautiful and venomous snakes has a venom unlike that of any other snake, research involving University of Queensland scientists has revealed.
Plants & Animals
Oct 31, 2016
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179
Most amber inclusions are organisms that lived in the forest. It is very rare to find sea life trapped in amber. However, an international research group led by Prof. Wang Bo from the Nanjing Institute of Geology and Palaeontology ...
Archaeology
May 13, 2019
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910
For the first time, federal scientists have found damage to deep sea coral and other marine life on the ocean floor several miles from the blown-out BP well - a strong indication that damage from the spill could be significantly ...
Environment
Nov 6, 2010
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Cone snails have inspired humans for centuries. Coastal communities have often traded their beautiful shells like money and put them in jewelry. Many artists, including Rembrandt, have featured them in sketches and paintings. ...
Biochemistry
Oct 10, 2017
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424
Crystal meth (methamphetamine) is a highly addictive drug that seduces victims by increasing self-esteem and sexual pleasure, and inducing euphoria. But once hooked, addicts find the habit hard to break. Barbara Sorg from ...
Plants & Animals
May 28, 2010
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0
A snail once thought to have been among the first species to go extinct because of climate change has reappeared in the wild.
Plants & Animals
Sep 8, 2014
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0
The word snail is a common name for almost all members of the molluscan class Gastropoda that have coiled shells in the mid adult stage. When the word snail is used in a general sense, it includes sea snails, land snails and freshwater snails.
Snails lacking a shell or having only a very small one are usually called slugs. Snails that have a broadly conical shell that is not coiled or appears not to be coiled are usually known as limpets.
Snails can be found in a wide range of environments from ditches, deserts, and the abyssal depths of the sea. Although most people are familiar with terrestrial snails, land snails are in the minority. Marine snails have much greater diversity and a greater biomass. The great majority of snail species are marine. Numerous kinds can be found in fresh water and even brackish water. Many snails are herbivorous, though a few land species and many marine species are omnivores or predatory carnivores.
Snails that respire using a lung belong to the group Pulmonata, while those with gills form a paraphyletic group, in other words, snails with gills are divided into a number of taxonomic groups that are not very closely related. Snails with lungs and with gills have diversified widely enough over geological time that a few species with gills can be found on land, numerous species with a lung can be found in freshwater, and a few species with a lung can be found in the sea.
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