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Peristomial

   Also found in: Encyclopedia 0.01 sec.
per·i·stome  (pr-stm)
n.
1. Botany A fringe of toothlike appendages surrounding the mouth of a moss capsule.
2. Zoology The area or parts around the mouth in certain invertebrates.

peri·stomal (-stml), peri·stomi·al (-stm-l) adj.


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Some observations have shown that only 30% of settled larvae have lost the velum and developed peristomial teloconch, with the remaining larvae failing to pass metamorphosis.
At the Instituto Investigaciones Oceanologicas (IIO) facilities these were counted and classified in stages with and without peristomial shell.
 
 
 
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