If fossils of a water animal or plant are found in a place then that place used to be covered by water in the past, and graptolites , in deep-water deposits, are the dominant fossils. Given these facts, what are found in place to indicate a place used to be covered by water among the following options:
- mussels
 - Sea urchins
 - Conifers
 - patch reefs
 - graptolites
 - loose dirt
 - cartilage
 - Sediment


 

     graptolites    