The fossil pictured above came from the St. Clair Site in Pennsylvania. The fossils are formed in black slate of the Pennsylvani
an Period, 300 million years ago. The fossils found at this site are comprised of ferns and trees. This fossil record for this time period in Pennsylvania indicates that the environment was a __________. A) desert
B) deep ocean
C) shallow sea
D) thriving forest
-A desert is a big area with sand that has no vegetation.
-An ocean is a large body of water.
-A shallow sea is a body of salt water that has little depth.
-A forest is an ecosystem that has a lot of vegetation.
According to the definitions and considering that the fossils found are comprised of ferns and trees, the answer is that the environment was a thriving forest.
