Question

which of the following are reasons why index fossils are chosen for determining ages of rocks? select all that apply. found commonly in rocks distributed over a very wide range are always dinosaurs limited life existence in geologic time

Explanation:

Los fósiles índice se eligen porque son fáciles de encontrar, se extienden por grandes áreas geográficas y tuvieron un período de vida geológico corto, lo que permite fechar rocas de forma precisa. No son siempre dinosaurios, ya que pueden ser otros organismos.

Answer:

• Found commonly in rocks
• Distributed over a very wide range
• Limited life existence in geologic time