Vocab Bloom Hub

index fossil

/ˈɪndeks ˈfɒsəl/

1 entry

phrase

/ˈɪndeks ˈfɒsəl/C1formalscientific
  • ruИскопаемое, используемое для определения и идентификации конкретного геологического периода, обычно принадлежащее виду, который существовал недолго, но был широко распространён географически.

A fossil that is used to define and identify a particular geological time period, typically from a species that existed for a short span but was widespread geographically.

  1. Geological time markerC1formal

    A fossil of an organism that lived during a relatively short, well-defined geological time span and is used to identify and date rock layers.

    ruГеологический маркер времени

    • Trilobites are classic index fossils for the Paleozoic era.
    • Geologists use index fossils to correlate rock strata across different regions.
    • Ammonites serve as excellent index fossils for the Mesozoic era.