Gourt > Science > Biology > Flora and Fauna > Animalia > Arthropoda (136)
Arthropods (phylum Arthropoda) (from Greek ἀρθρον, meaning joint and πούς/ποδός, meaning foot) are the largest phylum of animals and include the insects, arachnids, crustaceans, and others. Approximately eighty percent of extant animal species are arthropods, with over a million modern species described and a fossil record reaching back to the early Cambrian. Arthropods are common throughout marine, freshwater, terrestrial, and even aerial environments, as well as including various symbiotic and parasitic forms. They range in size from microscopic plankton (~0.25 mm) up to forms several metres long.
Arthropods are characterised by the possession of a segmented body with appendages on each segment. They have a dorsal heart and a ventral nervous system. All arthropods are covered by a hard exoskeleton that is made out of chitin, a polysaccharide. Periodically, an arthropod sheds this covering when it moults. This covering makes arthropods less prone to dehydration.
Basic arthropod structure
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Ellie keeps finding "Arthropoda" at her preschool beach craft time. She's making homeschooling look amazing! http://twitpic.com/qnfdk
KarenDawkins (Karen Dawkins) Mon, 23 Nov 2009 17:35:26 -0000
Ellie keeps finding "Arthropoda" at her preschool beach craft time. She's making homeschooling look amazing! http://twitpic.com/qnfdk
Geleedpotigen, Arthropoda http://tinyurl.com/yevdb42
GEOlution (GEOlution) Sat, 21 Nov 2009 19:42:33 -0000
Geleedpotigen, Arthropoda http://tinyurl.com/yevdb42
@sanymoraes X-Salmonela no MP, X-Arthropoda insecta no TST, X-morte lenta na rodoviária e X-Safena no Skys... hahhaha
esguimaraes (Edvaldo S G Junior) Fri, 20 Nov 2009 01
Arthropoda - Phylogeny, bibliography, and links from the Tree of Life Project.
Bug Pictures - Gallery of photos of insects and spiders, mainly from France.
Meta Description: [ BUG Pictures - Photos de bestioles, d'insectes, d'araignées en grand format ]
BugGuide.Net - An online resource devoted to insects, spiders and their kin, with identification help, images, and information.
Meta Description: [ An online resource devoted to NorthAmerican insects, spiders and their kin, offering identification, images, andinformation. ]
Bugs in Cyberspace - Images and information on many species of arthropods. Sections on phasmids, mantids, beetles, scorpions, and US invertebrates.
Meta Description: [ Your Everything Bug Store, At Bugs in Cyberspace we're determined to become the first resource-gateway for the largest variety of bug-related products and services. We'll use a variety of creative means to interface between manufacturers, dealers, breeders, schools and universities, artists, hob... ]
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Canadian National Collection of Insects, Arachnids, and Nematodes - Information on the 16 million specimens contained in the collection, plus curatorial units and staff. Links to on-site entomology and arachnology documentation, and other relevant web sites.
Meta Description: [ About ECORC, the Canadian National Soil Database, Canadian National Collection of Insects, Acari and Nematodes, Vascular Plant Herbarium, Mycological Herbarium, Fungal Culture Collection. List of personnel, publications, current projects. ]
Cirrus Digital Imaging - Gallery of close-up photos of common North American arthropods.
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Meta Description: [ Keeping insects and arachnids as pets; husbandry, species, and unusual invertebrates. ]
Identification of Insects - An overview of morphological features of the different Classes of arthropods and Orders of insects, with photos of Italian arthropods by Alessandro Strano.
Meta Description: [ A Strange Site - identification of arthropods ]
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Insectisite - Pictures of insects and spiders of the Netherlands.
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Iowa State University Entomology Image Gallery - A large collection of photographs and movies of insects and other arthropods and they damage they cause. Includes links to accompanying articles.
Meta Description: [ Photographs and movies of insects and the damage they cause. From Iowa State University Entomology. ]
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Reference Library of Digitized Insect Sounds - Audio samples organized by both species and subject.
TIARA - Collaborative biological information system for the insects and terrestrial arthropods of the south-central United States and adjacent Mexico. Classification, range maps, taxon lists, images, Texas A and M University holdings, and links.
What's That Bug? - Information, user-contributed images, and identification help for insects and relatives of North America.
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