Exploring Fossils: Formed fossil
(View Complete Item Description)If a plant or animal is buried by sediments, two types of fossils may be formed - a mold or a cast.
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Evolution: Ancient fossils
(View Complete Item Description)Ancient fossils Darwin found in South America suggested that ancient animals might be related to present-day living organisms.
Sedimentary Rocks: Fossils forming
(View Complete Item Description)Fossils often form along with sedimentary rocks because organisms can be quickly buried by sediments.
Fossils: Mold
(View Complete Item Description)When a plant or animal is buried by sediment, it decays over time and leaves a space, referred to as a mold.
Fossils: Cast
(View Complete Item Description)When a plant or animal is buried by sediment, it decays over time and leaves a space. A cast is formed when this space is filled by sediments or minerals that harden over time.