Answer:
Fossils that are formed by sediments and found in sedimentary rock include a mold of a fish skeleton and a cast of a clamshell.
Step-by-step explanation:
A mold is a type of fossil that forms when an animal's hard parts, such as bones or shells, are buried in sediment. As the sediment hardens into rock, it takes on the shape of the animal's body, creating a negative impression of it. A cast is a type of fossil that forms when minerals seep into a mold and harden, creating a solid replica of the original animal.
Other types of fossils that may be found in sedimentary rock include preserved insects, such as those that have become entombed in amber, and pieces of petrified wood, which is wood that has been replaced by minerals over time. A frozen animal is not typically a type of fossil that is found in sedimentary rock, as the freezing process does not typically occur in sedimentary environments.