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The study of the spatial and temporal distribution of fossil organisms, often interpolated with radiometric, geochemical, and paleoenvironmental information as a means of dating rock strata.


the examination of the ages of rock strata by using fossils


(ˌbaɪ oʊ strəˈtɪg rə fi)

a branch of geology dealing with the differentiation of sedimentary rock.
bi`o•strat`i•graph′ic (-ˌstræt ɪˈgræf ɪk) adj.
References in periodicals archive ?
Although regional mapping took up much of his time, Ray was at heart a biostratigrapher. Paleontology was a special passion, in which he displayed extraordinary versatility.
There are many elements of science that invoke wonderment: as a professional biostratigrapher whose livelihood is based on the reality of evolution, it is not unusual for me to think about the amazing achievement represented by our understanding of the history of life.
It was his work in the Canadian Arctic Islands, beginning in 1954, that laid the foundation for his subsequent brilliant career as a paleontologist and biostratigrapher specializing in the now-extinct class of coiled, marine molluscs known as ammonoids.
For this reason they are of great importance to a wide range of earth scientists, including industrial biostratigraphers. Using the small samples that come from subsurface boreholes, biostratigraphers are able to identify the oil and gas reservoir and source rocks of specific ages and can precisely steer while drilling to maximise hydrocarbon production.