What is a cast fossil short answer?
If the original organism decays, leaving an imprint and an empty space, it is called an exterior mold or simply a mold. If a space in the structure is filled with minerals and then the original animal or plant part dissolves, it is called a cast. This gastropod is a cast fossil.
What is the difference between a fossil mold and cast?
Fossil molds and casts preserve a three-dimensional impression of remains buried in sediment. The mineralized impression of the organism left in the sediment is called a mold. The mineralized sediment that fills the mold recreates the shape of the remains. This is called a cast.
What is the difference between a fossil and a cast?
Fossils are the preserved remains of ancient life. … If this imprint fills in with minerals from sediment and groundwater, it can harden to form a fossil. This fossil is called a cast fossil. The fossilized imprint is called a mold fossil.
What are some examples of cast fossils?
Some examples of cast fossils include embryos, skin, teeth, leaves, etc.
What is a cast fossil?
FOSSIL CASTS are found when a fossil mold underground is filled with sediment to form a fossil in the actual shape of the animal bones! Instead of being made of actual bone, fossil casts are made of hardened sediment (rock!)
What is a cast fossil simple?
Filters. A fossil formed when an animal, plant, or other organism dies, its flesh decays and bones deteriorate due to chemical reactions; minerals gradually enter into the cavity, resulting in a cast, also called a mold fossil, which is in the general form of the original organism. noun.
What is a mold fossil short answer?
Mold-fossil meaning A fossil formed when an animal, plant, or other organism dies and is covered by sediment, its flesh decays and bones deteriorate due to chemical reactions, and a cavity remains below the ground surface. noun.
What are fossils short answers 6?
Fossils are the remains or traces of ancient life that have been preserved by natural processes. Examples of fossil include shells, bones, stone imprints of animals or microbes, exoskeletons, objects preserved in amber, petrified wood, coal, hair, oil, and DNA remnants.