
Echiuroidea is a class of annelid worms commonly known as spoon worms or sausage worms. They evolved from annelids, but have secondarily lost their segmentation. ==Characteristics== The bodies of spoon worms are generally cylindrical with two wider regions separated by a narrower region. There is a large extendible, scoop-shaped proboscis in front...
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http://en.wikipedia.org/wiki/Echiuroidea

• (n. pl.) A division of Annelida which includes the genus Echiurus and allies. They are often classed among the Gephyrea, and called the armed Gephyreans.
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http://thinkexist.com/dictionary/meaning/echiuroidea/
Ech`i·u·roi'de·a noun plural [ New Latin , from
echiurus , the name of one genus (Gr.
'e`chis an adder +
o'yra` tail) +
-oid .]
(Zoology) A division of Annelida which includes the genus
Echiurus and allies. They are often classed among the Ge...
Found on
http://www.encyclo.co.uk/webster/E/6
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