K/T line
K/T line may refer to:
- The K/T boundary or the Cretaceous–Paleogene boundary, a geological signature that defines the end of the Mesozoic era.
- The K Ingleside and T Third Street lines of San Francisco's Muni Metro light rail system, which operated as a single line spliced together through the city's downtown at various times from 2007 to 2023.
This disambiguation page lists articles associated with the title K/T line.
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