biostratigraphic
adjective see biostratigraphy

New Collegiate Dictionary. 2001.

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  • biostratigraphic — adjective Of or pertaining to biostratigraphy …   Wiktionary

  • biostratigraphic — bio·stratigraphic …   English syllables

  • biostratigraphic — …   Useful english dictionary

  • biostratigraphic unit — noun : a group of geologic strata characterized by a particular fossil fauna or flora rather than by lithologic features …   Useful english dictionary

  • Biozone — Biostratigraphic units or Biozones are intervals of geological strata that are defined on the basis of their characteristic fossil taxa. A biostratigraphic unit may be defined on the basis of a single taxon or combinations of taxa, on relative… …   Wikipedia

  • biostratigraphy — biostratigraphic /buy oh strat i graf ik/, adj. /buy oh streuh tig reuh fee/, n. a branch of geology dealing with the differentiation of sedimentary rock units on the basis of the fossils they contain. [BIO + STRATIGRAPHY] * * * …   Universalium

  • Geological unit — A geological unit is a volume of rock or ice of identifiable origin and age range that is defined by the distinctive and dominant, easily mapped and recognizable petrographic, lithologic or paleontologic features (facies) that characterize it.… …   Wikipedia

  • Cambrian Period — Oldest time division of the Paleozoic Era. During the Cambrian, 543–490 million years ago, there were widespread seas and several scattered landmasses. The largest continent was Gondwana. The average climate was probably warmer than today, with… …   Universalium

  • Biostratigraphy — is the branch of stratigraphy which focuses on correlating and assigning relative ages of rock strata by using the fossil assemblages contained within them. Usually the aim is correlation, demonstrating that a particular horizon in one geological …   Wikipedia

  • Relative dating — Before the advent of absolute dating in the 20th century, archaeologists and geologists were largely limited to the use of relative dating techniques. It estimates the order of prehistoric and geological events were determined by using basic… …   Wikipedia

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