Which fossils are formed by sediments and found in sedimentary rock?
a mold of a fish skeleton and a cast of a clamshell
a cast of a clamshell and a frozen animal
a frozen animal and a piece of petrified wood
a piece of petrified wood and a preserved insect
A mold of a fish skeleton and a cast of a clamshell
A piece of petrified wood and a preserved insect