Vocab Bloom Hub

index fossil

/ˈɪndeks ˈfɒsəl/

翻译: 用于确定和识别特定地质时期的化石,通常是那些生存时间短但地理分布广泛的物种的化石。

1 个条目

phrase

/ˈɪndeks ˈfɒsəl/C1formalscientific
  • zh用于确定和识别特定地质时期的化石,通常是那些生存时间短但地理分布广泛的物种的化石。

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.

    zh地质年代标志

    • 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.