anonaddict Posted September 10 Share Posted September 10 based on gut feeling im thinking these are probably modern shells since there are so many but im unsure how to determine it. they are very tightly bound to the rock and cannot just be scratched off and its sedimentary rock but animals such as barnacles also permanently attach themselves to rocks but they dont look like barnacles. they are 2mm in diameter Link to comment Share on other sites More sharing options...
Ludwigia Posted September 10 Share Posted September 10 These appear to be relatively recent worm tubes (Serpula). I'm also seeing bryozoen under the magnifying glass. 1 3 Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
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