Hi Shaw, thanks for posting a question here!
The index is a name given to fossils that are widespread geographically, are abundant in number, and are limited to a short span of time.
Answer: Index ✅
Hope that helps! ★ If you have
further questions about this question or need more help, feel free to comment
below or post another question and send the link to me. -UnicornFudge aka Qamar
