guide fossil वाक्य

उदाहरण वाक्य

1. "Phyllograptus " species are excellent index fossils or guide fossils for identifying Ordovician rocks.
2. Guided fossil-hunting treks allow ordinary folks to become amateur paleontologists
3. Index fossils ( also known as guide fossils, indicator fossils or zone fossils ) are fossils used to define and identify geologic periods ( or faunal stages ).
4. Fossil fans can dig it : See what you can dig up when you join this hands-on, guided fossil expedition through Old Topanga Canyon at 9 a . m . Saturday.