trilobite
['hen-of-the-woods, hen of the woods, Polyporus frondosus, Grifola frondosa', 'harvestman, daddy longlegs, Phalangium opilio', 'electric ray, crampfish, numbfish, torpedo', 'echidna, spiny anteater, anteater', 'velvet', 'fiddler crab', 'megalith, megalithic structure']