parastratigraphy

parastratigraphy

[¦par·ə·strə′tig·rə·fē]
(geology)
Supplemental stratigraphy based on fossils other than those governing the prevalent orthostratigraphy.
Stratigraphy based on operational units.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.