perhaps a kind of puka shell?
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Posted by: lindabd Post Reply
09/20/2017, 09:27:06

These lovely, parchment like shell disks are new to me. Are they a sort of puka shell? They don't appear to be ground at the edges but maybe they are. They have a slightly domed shape and visible concentric striations within.

IMG_7410.JPG (185.5 KB)  IMG_7413.JPG (118.4 KB)  

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