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Topic: Hexactenellida


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In the News (Mon 28 Dec 09)

  
  Sponge - the large food & drink encyclopedia
Sponges are divided into classes based on the type of spicules in their skeleton.
The four kinds of sponges are bony (Calcarea), glass (Hexactenellida), spongin (Demospongiae), and a fourth kind made up of a mixture of types (the Sclerospongiae).
Although 90% of modern sponges are demosponges, their fossilized remains are less common than those of other types because their skeletons are composed of relatively soft spongin that does not fossilize well.
www.netmoon.com /recipes/encyclopedia/s/sponge.html   (1058 words)

  
 wiki/Sponge Definition / wiki/Sponge Research   (Site not responding. Last check: 2007-11-06)
For example, it has recently been shown that some sponges are not sessile and can move to more favorable locations as rapidly as few centimeters a day.
Another sponge, the Venus Flower BasketThe Venus' Flower Basket, or Euplectella aspergillum, is the only Poriferan in the class Hexactenellida to be used in hobbyists' aquariums.
[click for more]), glass (Hexactenellida), spongin (Demospongiae), and a fourth kind made up of a mixture of types (the Sclerospongiae).
www.elresearch.com /wiki/Sponge   (3703 words)

  
 "Stretch" Facts - 5th Grade
If you wash with a natural sponge, you're actually washing with its skeleton.
There are four kinds of sponge skeletons: bony, glass, spongin, and a mixture kind (Calcarea, Hexactenellida, Demospongiae, and Sclerospongiae).
Don't try to take a bath with a glass sponge!
www.dmturner.org /Teacher/Library/5facts.htm   (5506 words)

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