Sitios

Echinodermata - English
URL: http://www.biosis.org/htmls/zrdocs/zoolinfo/grp_ech.htm

se selecciona por filtros: Recursos de web

Part of Internet Resource Guide for Zoology.

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Phylum Echinodermata - English
URL: http://204.154.117.95/AnimalBiology/Echinodermata/Echinodermata.html

Photographs of members of each class.

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The CAS Echinoderm Web Page - English
URL: http://www.calacademy.org/research/izg/echinoderm/

California Academy of Sciences. Small page contains summary and taxonomy of the Echinodermata with some images, research at the California Academy of Sciences, links to other Echinoderm and invertebrate zoology web resources.

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Echinodermata Hub - English
URL: http://www.projectlinks.org/echinodermata/

se selecciona por filtros: Recursos de web

Echinoderm links.

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Morphology of Echinodermata - English
URL: http://www.ucmp.berkeley.edu/echinodermata/echinomm.html

Echinodermata: Morphology. Echinoderms have been compared to living, moving castles. Castles are made of interlocking blocks, with a single main.

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Echinoid Home Page - English
URL: http://www.nhm.ac.uk/palaeontology/echinoids/

The Echinoid website at The Natural History Museum, London. Echinoids are a major group of marine invertebrates with a long fossil record. If you know nothing about the group the obvious place to start is at the Introduction. Here you will find some basic facts about how echinoids live, feed and reproduce. Information presented here is very non-technical and is designed for the casual visitor with no biological training.

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The Homalozoa - English
URL: http://www.ucmp.berkeley.edu/echinodermata/homalozoa.html

Perhaps the strangest looking of all the echinoderms are the homalozoans. Unlike most echinoderms, which are radially symmetrical with five similar sections (as in sea-stars), the homalozoa were secondarily bilateral (as in sand dollars), or even asymmetical. The Homalozoa has only recently been thoroughly studied and examined. The current classification system recognizes two orders: Cornuta and Ankyroida (formerly known as the Mitrata or Stylophora). The Cornuta are asymmetrical and shaped like a boot; the Ankryoida were bilaterally symmetrical (had a left and right side). Altogether there are 12 families and 60 genera known.

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The Helicoplacoidea - English
URL: http://www.ucmp.berkeley.edu/echinodermata/helicoplacoidea.html

The Helicoplacoidea is a small group of fossil echinoderms known only from the Lower Cambrian. In life, they were shaped somwhat like a slender football or a fat cigar, and were able to extend or contract the length of their bodies. Their "skin" was covered in spirals of overlapping ossicles that functioned like armor; their "mouth" was a long groove that also spiralled around their body.

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Crinoids - Sea lilies and feather stars. . . - English
URL: http://www.ucmp.berkeley.edu/echinodermata/crinoidea.html

Crinoids are niether abundant or familiar organisms today. However, they dominated the Paleozoic fossil record of echinoderms and shallow marine habitats until the Permo-Triassic extinction, when they suffered a near complete extinction: many Paleozoic limestones are made up largely of crinoid skeletal fragments.

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Crinoidea - English
URL: http://phylogeny.arizona.edu/tree/eukaryotes/animals/echinodermata/crinoidea/cri

Part of Tree of Life.

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Phylum Echinodermata - English
URL: http://animaldiversity.ummz.umich.edu/echinodermata.html

Some characteristics of the Phylum and classification.

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Echinoderm Envenomations - English
URL: http://www.emedicine.com/cgi-bin/foxweb.exe/showsection@/em/ga?book=emerg&topici

se selecciona por filtros: Guías e índices, Publicaciones

Offers detailed information about venomous echinoderms, including pictures of poisonous species.

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Introduction to the Echinodermata - English
URL: http://www.ucmp.berkeley.edu/echinodermata/echinodermata.html

se selecciona por filtros: Organizaciones, Guías e índices

Starfish, brittle stars, sea cucumbers, sea urchins, sand dollars.

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