Merriam-Webster Collegiate Dictionary - chronologist

 noun  Date: 1611 an expert in chronology CHRONOLOGY  noun  (plural -gies)  Etymology: New Latin chronologia, from chron- + -logia -logy  Date: 1585  1. the science that deals with measuring time by regular divisions and that assigns to events their proper dates  2. a chronological table, list, or account  3. an arrangement (as of events) in order of occurrence reconstruct the ~ of the trip