Some very nice photographs of present day stromatolites in Australia. Fossil Record of the Cyanobacteria . University of California at Berkeley Museum of Paleontology. An introduction to the oldest known fossils and their part in forming stromatolites. All foramnifera and aquatic and almost all species are marine.
Most species are slow moving bottom feeders.
The foraminifera are very important index fossils for stratigraphy. The foraminifera are known from the Ordovician to the present. Late Quaternary Foraminiferida and Ostracoda . You will need Java Script capability to use this site. Introduction to the Foraminifiera .