terrestrial sediments

Which Fossil Species Would Make The Best Index Fossil?

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Which Fossil Species Would Make The Best Index Fossil? Trilobites serve as good index fossils, letting geologists date the age of the rocks that they are in. Which species make the best index fossils? The best index fossils are common, easy-to-identify at species level, and have a broad distribution—otherwise the likelihood of finding and recognising

In Which Landscape Region Might We Find The Placoderm Fish Index Fossil?

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In Which Landscape Region Might We Find The Placoderm Fish Index Fossil? The timeline below represents time on Earth from the beginning of the Paleozoic Era (A) to the present (B). Which numbered position best represents the time when humans first appeared in the fossil record? The diagram below represents the placoderm fish Bothriolepis, an