Roberto B Posted August 29, 2019 Share Posted August 29, 2019 Hi everyone, I found this in marine pliocene-pleistocene sediments. The rock is a sandstone with large cemented elements (pebbles and fragments of shells). What is that round object? It has an ornamentation made of small holes, fairly regular, under the surface the holes seem to widen into small chambers (as you can see in the broken point). Could it be a coral or a fossil sponge? Dimension of the round object: 40x25mm Thanks Link to comment Share on other sites More sharing options...
supertramp Posted August 29, 2019 Share Posted August 29, 2019 Maybe boring sponges on a pebble Ciao Link to comment Share on other sites More sharing options...
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