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general discussions on fossil sea urchins

In this category, we propose to talk about... everything related to fossil sea urchins. So, it's up to you!
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classified ads, specimen swaps, etc.

you can propose here all your proposals of exchange of specimens, of sale. Links to commercial sales sites (professional or amateur) are strictly forbidden. Professionals are not allowed to place ads for specimens for sale on their own website. Random checks will be made and non-compliant ads will be deleted without notice or discussion.
Modérateur: Modérateurs