How to Use "Proterozoic" with Example Sentences

1. Some problems concerning proterozoic structure and strata of the sino-korean old land .
2. In addition to the whole school full of the purple matrix array also learn full satisfaction proterozoic .
3. Archean mantle fragments in proterozoic crust , western gneiss region , norway .
4. Wind bearing co. , ltd. hubei proterozoic .
5. In the grand canyon , the cambrian tapeats sandstone is nearly flat-lying , and overlies tilted proterozoic sedimentary rock .