Ediacaran and Cambriam Biota. Late Proterozoic Buildup (about 570 mya) For all of the 19th century and the first half of the 20th century, the Proterozoic.
Marine Invertebrates. Domain Eukarya (Eukaryotes) Kingdom Animalia (animals) No vertebra (backbone) 97% of all animal species on earth.
Edicaria-Cambian (1)
Ediacaran and Cambriam Biota
