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What does PTB mean?
Permian-Triassic Boundary (PTB) is the mass extinction event between the periods in geology.
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Frequently Asked Questions (FAQ)
What is the full form of PTB in Geology?
The full form of PTB is Permian-Triassic Boundary
What are the full forms of PTB in Academic & Science?
What are the full forms of PTB in Worldwide?
Find translations of Permian-Triassic Boundary