Since so few of these early organisms had shells, not many have been preserved as fossils. [1] Study of the rock-embraced fossils of marine life reveals the early adjustment struggles of these primitive organisms. [2]
See also: UB 58:7; UB 59:2.9; UB 59:3.10; UB 59:4.12; UB 59:5.10; UB 60:1.2,12; UB 60:2.5-6; UB 61:0.3; UB 61:2.4.