Blue-blooded and armored with 10 spindly legs, horseshoe crabs have perhaps always seemed a bit out of place.
Evolution
Mar 9, 2019
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Despite their intimidating appearance, the giant yellow and blue-black spiders spreading across the Southeastern U.S. owe their survival to a surprising trait: They're rather timid.
Plants & Animals
May 16, 2023
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The forests of the coastal regions from California to British Columbia are renowned for their unique and ancient animals and plants, such as coast redwoods, tailed frogs, mountain beavers and the legendary Bigfoot (also known ...
Plants & Animals
Aug 17, 2012
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Complex brains evolved much earlier than previously thought, as evidenced by a 520-million year old fossilized arthropod with remarkably well-preserved brain structures. Representing the earliest specimen to show a brain, ...
Archaeology
Oct 10, 2012
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In evolutionary biology, there is a deeply rooted supposition that you can't go home again: Once an organism has evolved specialized traits, it can't return to the lifestyle of its ancestors.
Evolution
Mar 8, 2013
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A stunning video based on fossils of a 410-million-year-old arachnid – one of the first predators on land – recreates the animal walking.
Archaeology
Jul 8, 2014
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(Phys.org)—While traveling with a group of researchers in the Amazon rain forest this past September, biologist Phil Torres came upon a type of spider he'd never seen before. Upon closer inspection, it turned out the spider ...
Water spiders spend their entire lives under water, only venturing to the surface to replenish their diving bell air supply. Yet no one knew how long the spiders could remain submerged until Roger Seymour and Stefan Hetz ...
Plants & Animals
Jun 9, 2011
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Researchers from the King Juan Carlos University (URJC) have carried out a research study published in Biological Conservation, which looked at whether spiders were more tolerant of human impact than other animals. The answer ...
Ecology
May 20, 2011
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Climbing is possibly one of the riskiest things an adult tarantula can do. Weighing in at anything up to 50gm, the dry attachment systems that keep daintier spiders firmly anchored are on the verge of failure in these colossal ...
Plants & Animals
May 16, 2011
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Arachnids are a class (Arachnida) of joint-legged invertebrate animals in the subphylum Chelicerata. All arachnids have eight legs, although in some species the front pair may convert to a sensory function. The term is derived from the Greek words ἀράχνη (aráchnē), meaning "spider".
Almost all extant arachnids are terrestrial. However, some inhabit freshwater environments and, with the exception of the pelagic zone, marine environments as well. They comprise over 100,000 named species, including spiders, scorpions, harvestmen, ticks, mites and Solifugae.
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