Question

the table shows index fossils. which conclusion about paradoxides pinus is supported by the information in the table? life forms existed during the cambrian period. similar fossil species formed after the devonian period. this fossil species first appeared during the cenozoic era. different life forms were surviving during precambrian time.

Explanation:

• The table shows index fossils. Looking at the row for the Cambrian period, we can see that Paradoxides pinus is listed. This indicates that life forms (in this case, the fossil Paradoxides pinus) existed during the Cambrian period.
• For the option "Similar fossil species formed after the Devonian period": There is no information in the table about similar species formation after Devonian.
• For the option "This fossil species first appeared during the Cenozoic era": The table shows it in the Cambrian (Paleozoic era), not Cenozoic.
• For the option "Different life forms were surviving during Precambrian time": The table entry for Paradoxides pinus is in the Cambrian (not Precambrian).

Answer:

Life forms existed during the Cambrian period.