Prehistoric sea levels are routinely estimated using geological indicators such as coral reefs and sedimentary records, as demonstrated by multiple studies utilizing coral microatolls, sedimentary proxies, and radiometric dating.
The claim asserts that prehistoric sea levels are estimated using geological indicators such as coral reefs and sedimentary records. Multiple papers in the dataset explicitly describe reconstructing past or prehistoric sea levels using coral reefs, coral microatolls, sedimentary records, and geological sea-level proxies. Therefore, the evidence strongly supports the claim, yielding a verdict of SUPPORTED.