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  1. Walt
    "It seems likely that trilobites were preceded by soft-bodied ancestors: at several localities, sedimentary rocks with trace fossils of trilobite activity underlie the oldest rocks with trilobite body fossils." From http://www.ucmp.berkeley.edu/arthropoda/trilobita/trilobitafr.html Hello all, I'm looking for papers that support or dispute the above standard line about trilobite ancestors likely having soft bodies. I searched the forum but tags such as "soft body" produces papers that refer to the soft bits of hard bodied trilobites; not true soft bodied trilobites. One or two papers, if you know of any, would be sufficient to get me on my way. Also, if anyone has thoughts about this subject, I would love to hear them. It is bothersome (at least to me) that these creatures seem to have no connection to the Proterozoic.
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