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Asian land mammal age

Geologic timescale for prehistoric Asian fauna

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Through Prehistory, China and Fossil

The basic unit of measure is the first/last boundary statement. This shows that the first appearance event of one taxon is known to predate the last appearance event of another. If two taxa are found in the same fossil quarry or at the same stratigraphic horizon, then their age-range zones overlap.

Ages

Direct radiometric dating of all ALMAs has not proven possible. Few absolute dates have been proposed, and those that have been are approximate and based on correlations to faunas in other parts of the world.

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