1a. The entire Precambrian Eon ( Hadean, Archean and Proterozoic ) spans 85% of all geologic time ranging from: 10 b.y.a. - 600 m.y.a. 200 m.y.a. - 60 m.y.a. 4.6 b.y.a. - 542 m.y.a. 6 b.y.a. - 400 m.y.a. b. The collective term for the important assemblages of mostly soft bodied organisms that lived mainly between 600 m.y.a. - 545 m.y.a. during the Neo or Late Proterozoic is: Paleozoic Fauna Ediacaran Fauna Shelly Fauna Proterozoic Fauna c. You are a crew member on the U.S.S. Enterprise. You must save the Earth by going back in time to find the now extinct species of humpback whale. Unfortunately, Spock makes a huge error in the time travel calculations and the Enterprise ends up in the Paleo/Early Archean . Scientists on the Enterprise are always curious so they organize a landing party to investigate. They bring the standard landing party equipment such as tricorders, communicators and phasers with them. What other vital item does the landing party need to bring with them for this short trip? oxygen supply food glasses a camera 10 b.y.a. - 600 m.y.a. 200 m.y.a. - 60 m.y.a. 4.6 b.y.a. - 542 m.y.a. 6 b.y.a. - 400 m.y.a..