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gastrolith

   Also found in: Dictionary/thesaurus, Medical, Wikipedia, Hutchinson 0.01 sec.
gastrolith [′ga·strə‚lith]
(vertebrate zoology)
A pebble swallowed by certain animals and retained in the gizzard or stomach, where it serves to grind food.
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The discovery of the gastroliths associated with this plesiosaur specimen were particularly exciting because most plesiosaur gastroliths are found associated with the long-neck morphotype," Schmeisser explained, adding that "the stones described in our paper are much lighter and smaller than those found in long-neck plesiosaurs.
Scientists discover sea monster with 289 Stones in its gut by Asian News International
The digestive tracts of both plesiosaurs also contained dozens of gastroliths, stones that paleontologists speculate were used to grind up hard-shelled prey and thereby aid digestion.
Some plesiosaurs went for clams by Science News
The only non-molluscan fauna include two small crayfish gastroliths.
Geology and geography by Journal of the Mississippi Academy of Sciences
 
 
 
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