Spirorbis carbonarius fossil. This is a microconchid, not a serpulid. From: The Ancient Life History of the Earth: A Comprehensive Outline Of The Principles...
NameFound:Spirorbis NameConfirmed:Spirorbis EOLID:11141041 NameBankID:2552082 NameFound:Spirorbis arietinus NameFound:Spirorbis carbonarius NameConfirmed:Spirorbis...
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