Abstract: Molar-tooth Carboantes, which is a bizarrerie rock type, holds an important position in Meso-Neoproterozoic paleo-ocean carbonate deposition. These years, precambrian research has made great progress, espercially with development of further research on global events, stratigraphy and paleocontinent reconstraction, Molar-tooth Carboantes become the Meso-Neoproterozoic hot point. And it disappears with the arrival of Varanger/Marinoan before 700Ma. Because its development and disappearance have respect to origins of life on Earth, ocean carbonates deposition and geochemical mutation, Molar-tooth Carboantes is one of the keys to Precambrian biological and geochemical events. In other words, Molar-tooth Carboantes have become a critical geological event for exploring early earth ocean environment, origins of life and proterozoic international stratigraphic correlation. The IGCP 447 approved by UNESCO/ IUGS have studied indetail about proterozoic Molar-tooth Carboantes and evolution of earth, espercially made an improtant progress in its origin and global paleocontinent stratigraphic correlation.

Key words: Molar-tooth Carbonates, Middle to Late Proterozoic, Evolution of the Earth, Source Rock, IGCP447