Talk:Fissurellidae

Copyright problem removed

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common biology

"For respiration, the shells of fissurellids have a single apical or subapical perforation ("keyhole")."

interestingly, there are fissurellidae that do not have the "keyhole", like Scutus breviculus. — Preceding unsigned comment added by 202.150.112.111 (talk) 22:34, 7 November 2014 (UTC)