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Noun: chronostratigraphic unit
  1. A segment of rock formed during a particular interval of geologic time.
    "Chronostratigraphic units are geological material, so it is correct to say that fossils of the species Tyrannosaurus rex have been found in the Upper Cretaceous Series."

Type of: amount, measure, quantity

Nearest

chronologically
chronologise
chronologize
chronology
chronometer
chronometrical
chronometry
Chronoperates
Chronoperates paradoxus
chronoscope
chronostratigraphic unit
chrosomal abnormality
chrysalid
chrysalis
chrysanthemum
Chrysanthemum balsamita
Chrysanthemum cinerariifolium
Chrysanthemum coccineum
Chrysanthemum coronarium
Chrysanthemum coronarium spatiosum
chrysanthemum dog