[ bahy-oh-struh-tig-ruh-fee ]
/ ˌbaɪ oʊ strəˈtɪg rə fi /


a branch of geology dealing with the differentiation of sedimentary rock units on the basis of the fossils they contain.

Nearby words

  1. biospeleology,
  2. biosphere,
  3. biospheric,
  4. biostatics,
  5. biostatistics,
  6. biostrome,
  7. biosurgery,
  8. biosynthesis,
  9. biosynthetic,
  10. biosystem

Origin of biostratigraphy

Related formsbi·o·strat·i·graph·ic [bahy-oh-strat-i-graf-ik] /ˌbaɪ oʊˌstræt ɪˈgræf ɪk/, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Science definitions for biostratigraphy


[ bī′ō-strə-tĭgrə-fē ]

The study and categorization of rock strata based on their fossil content and distribution. Biostratigraphic data are often considered together with radiometric and paleoenvironmental data as a means of dating rock strata. Compare lithostratigraphy.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.