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ki77a [65]
2 years ago
15

Ammonoids are found in rock layers from six different geological periods. Yet Ammonoids are considered excellent index fossils.

Explain why this is possible.
Biology
1 answer:
loris [4]2 years ago
7 0

Ammonoids are good as index fossils because of the following characteristics;

<span>1.       </span>Their abundance and vast distribution across most shallow marine waters during the periods

<span>2.       </span>They have easily recognizable features, such as shells and the highly crenulated and complex suture, that are well preserved in rocks

<span>3.       </span>Their rapid evolution that can assist determine changes and variations in the then environment






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