Tag Archives: homology

December 12

The best-laid brains of bugs and men

Five hundred million years ago, Alalcomenaeus and Fuxianhuia scuttled along the ocean floor side-by-side. These creatures, each 1-2 inches in length, were living in a time known as the Cambrian Explosion – the sudden fossilized shift from largely single-celled organisms to animals representing every animal phylum still in existence today. To put this in perspective, […]