📅 NSB Middle School 2009🎓 MS🔄 Round 13#️⃣ Question 22🌟 BONUS✍️ Short Answer
Name all of the following 3 choices that are excellent index fossils because they were distributed over a wide geographical area but only for a relatively short period of time: trilobites; ammonites; copepods
✔️Answer:TRILOBITES; AMMONITES
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