This is the reconstruction of Orthrozanclus reburrus, a previously unknown new species, as drawn by Marianne Collins. The precise arrangement of the anteriormost region remains somewhat conjectural. (Credit: Copyright AAAS-Science, 2007 / published in Science article co-authored by Dr. Jean-Bernard Caron, ROM Associate Curator, Invertebrate Palaeontology, Department of Natural History.)

For more, see: Newly Identified Species Of Spiny Snail-like Creature, 505 Million Year Old, Described