The 510-million-year-old fossils from the Forteau Formation of Newfoundland and Labrador, Canada, are microscopic, look like spiny balls connected together, and likely represent vegetative stages of planktic green algae. Coenobial microfossils from the Forteau Formation, including: (a, f) strut-form colonies, (b-e, h-k, m-o, s-u) plate-form colonies, and (g, l, p-r) ring-form colonies. Scale bar – 20 µm. Image credit: Thomas H.P. Harvey, doi:...
