Q:

What Is a Cast Fossil?

A:

Quick Answer

A cast fossil preserves the impression of the hard parts of an organism, such as a shell or exoskeleton. Cast fossils are most commonly found in sandstones and other porous rocks. Since hard parts do not decay as quickly as softer tissues, they are most likely to leave cast fossils.

Know More
What Is a Cast Fossil?
Credit: Alice Cahill Moment Getty Images

Full Answer

As the softer parts of an organism decay and dissolve, a detailed impression of the organism is left behind in rock. Cast fossils result when minerals are deposited in these molds. Artificial cast fossils can also be created by using plaster of Paris or latex to fill an existing mold.

Learn more about Ancient History

Related Questions

  • Q:

    Who were the Mayans?

    A:

    The Mayans were the founders of a Mesoamerican empire that thrived from around 250 A.D. to 900 A.D. They built numerous cities in and around the Yucatan, developed a sophisticated calendar and used the only known fully developed written language in Pre-Columbian America.

    Full Answer >
    Filed Under:
  • Q:

    Why was the wheel so important to Mesopotamia?

    A:

    The wheel allowed Mesopotamians to create a number of novel transportation methods. It was also used in a variety of mechanical devices. Creating wheels may have also spawned new methods of making items that need precision.

    Full Answer >
    Filed Under:
  • Q:

    What were some ancient Mayan jobs?

    A:

    The hardest and most menial ancient Mayan jobs were reserved for the lowest class — the farmers and laborers. Mayan life was centered on the class system that created deep societal divisions, and Mayans did jobs based on their station in life.

    Full Answer >
    Filed Under:
  • Q:

    What did the Algonquins eat?

    A:

    Coastal Algonquins ate a lot of seafood, such as oysters, clams, mussels and lobsters, while those living further away from the coast hunted for food in the forests. Using fish to fertilize their crops, they grew and ate corn and used maple sap to make sugar.

    Full Answer >
    Filed Under:

Explore