MavicaNET - Starfish, sea urchins, sea cucumbers, etc. (Echinodermata)

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Starfish, sea urchins, sea cucumbers, etc. (Echinodermata)
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	Каталог / Культура / Наука / Науки про живе / Біологія організмів / Зоологія / Тварини (Animalia) / Типи тварин / Starfish, sea urchins, sea cucumbers, etc. (Echinodermata)

	Brittle-stars and basket-stars (Ophiuroidea) [0]		Sea lilies and feather stars (Crinoidea) [2]		Seastars and cushion stars (Asteroidea) [3]
	Sea cucumbers (Holothuroidea) [2]		Sea urchins and sand dollars (Echinoidea) [6]

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Phylum Echinodermata
Some characteristics of the Phylum and classification. [eng]

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

Phylum Echinodermata
Photographs of members of each class. [eng]

Echinodermata Hub
Echinoderm links. [eng]

Crinoidea
Part of Tree of Life. [eng]

Echinodermata
Part of Internet Resource Guide for Zoology. [eng]

Crinoids - Sea lilies and feather stars. . .
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. [eng]

The Homalozoa
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. [eng]

The CAS Echinoderm Web Page
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. [eng]

Introduction to the Echinodermata
Starfish, brittle stars, sea cucumbers, sea urchins, sand dollars. [eng]

The Helicoplacoidea
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. [eng]

Classification of the Extant Echinodermata
List of taxa. [eng]

Echinoderm Links
The Echinoderm Newsletter is a yearly bulletin distributed to those interested in echinoderms. The newsletter contains information concerning meetings and conferences, publications of interest to echinoderm biologists, titles of theses on echinoderms and research interests, and addresses of echinoderm biologists. [eng]

Echinoid Home Page
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. [eng]

Sea Urchin Harvesters Association
SUHAC Annual Meeting. Sea Urchin Management. Workshop Agenda. News Brief. North Coast Tour. Sea Otter News. About California Sea Urchins. Light & Variable. Current World Prices for Sea Urchin. [eng]

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