31. Some Cambrian organisms ventured onto land, producing the trace fossils " Protichnites " and " Climactichnites ". 32. Perhaps the most spectacular trace fossils are the huge, three-toed footprints produced by dinosaurs and related archosaurs. 33. Some Cambrian trace fossils indicate that their makers possessed hard exoskeletons, although they were not necessarily mineralised. 34. Sometimes trace fossils have been referred to " Megalosaurus " or to the ichnogenus " Megalosauripus ". 35. The Ediacaran fossils of Southern Australia contain trace fossils , which indicate that there were motile benthic organisms. 36. Another way to classify trace fossils is to look at their relation to the sediment of origin. 37. Trace fossils of these Avalon organisms have been found worldwide, and represent the earliest known complex multicellular organisms.38. Its type specimen is AMNH 6851, a maxilla ( rostrum ), and it is not a trace fossil . 39. Fossils from the formation include remains of dinosaurs, as well as bivalve shells, plant fossils, and trace fossils . 40. Aquatic trace fossils are also abundant.
