Documents Figure 9.1 Protist positions on the tree of life. In this tree, developed by Patrick Keeling,...

Slide 1Figure 9.1 Protist positions on the tree of life. In this tree, developed by Patrick Keeling, University of British Columbia, the protozoans (foraminiferans and radiolarians)…

Documents Figure 16.1

Figure 16.1 Early jawless fishes: (a) Sacabambaspis from the Mid Ordovician of Brazil, the oldest well-preserved fish; (b) the osteostracan Hemicyclaspis from the Devonian;…