"Calibration points" refers to specific reference measurements or benchmarks that are used to ensure accuracy and adjust or align various systems or instruments. Full definition
Our conservative calibration point and analyses of gene sequence saturation and dating bias suggest it may be much older. (science.sciencemag.org)
The researchers also used the few known calyptrate fossils as calibration points for a molecular phylogeny to estimate the timing of major radiations in this clade. (sciencedaily.com)
The time the island formed offers a geological time scale calibration point for dating the most recent common ancestor of SIV. (science.sciencemag.org)