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Topic: Spondylus

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	Spondylus -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-10-29)
		Their key characteristic is that the two parts of their shells are hinged together with a ball and socket type of hinge, rather than a toothed hinge as is more common in other bivalves.
		Spondylus have multiple eyes around the edges of the shell, and they have a relatively well developed (The sensory and control apparatus consisting of a network of nerve cells) nervous system.
		Spondylus shell are much sought after by collectors, and there is a lively commercial market in them.
	www.absoluteastronomy.com /encyclopedia/s/sp/spondylus.htm (256 words)

	Encyclopedia: Spondylus (Site not responding. Last check: 2007-10-29)
		Spondylus is a genus of bivalve mollusks, the only genus in the family Spondylidae.
		Spondylus have multiple eyes around the edges of the shell, and they have a relatively well developed nervous system.
		Their nervous ganglia are concentrated in the visceral region, with recognisable optic lobes, connected to the eyes.
	www.nationmaster.com /encyclopedia/Spondylus (285 words)

	Gemstones beginning with S (Site not responding. Last check: 2007-10-29)
		Spiny oyster shell, more formally called spondylus brodnip princess or spondylus princeps, is found in the Sea of Cortez off Baja California, Mexico.
		Spondylus is a Latin word meaning "spines on its back." Brodnip is the name of the scientist who traveled with Cortez on his exploration of Baja California.
		The shell acquired the name "princess" when Cortez presented his marine discoveries to the king of Spain, and the king's daughter fell in love with the lovely spiny oyster.
	www.rings-things.com /hazel-doc/Extended/s.htm (2430 words)

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