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:

Paradoxides pinus is listed under the Cambrian period in the table of index - fossils. This directly indicates that life forms existed during the Cambrian period. The other options are incorrect as there is no evidence from the table to support them. There is no mention of similar fossil species after the Devonian period, the fossil did not first appear in the Cenozoic era as it is in the Paleozoic era (Cambrian), and there is no information about Precambrian time and different life - forms in relation to this fossil.

Answer:

Life forms existed during the Cambrian period.