Question

the table shows index fossils. which conclusion about paradoxides pinus is supported by the information in the table? cenozoic era quaternary period pecten gibbus tertiary period calyptraphorus velatus cretaceous period scaphites hippocrepis mesozoic era jurassic period perisphinctes tiziani triassic period trophites subbullatus permian period leptodus americanus pennsylvanian period dictyoclostus americanus mississippian period cactocrinus multibrachiatus paleozoic era devonian period mucrospirifer mucronatus silurian period cystiphyllum niagarense ordovician period bathyurus extans cambrian period paradoxides pinus precambrian 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 Paradoxides pinus as an index - fossil for the Cambrian period. This indicates that life forms existed during the Cambrian period. The other options are incorrect as the fossil is not associated with post - Devonian periods, did not first appear in the Cenozoic era, and the table does not provide information about Precambrian time.

Answer:

Life forms existed during the Cambrian period.