Cynognathus, a Triassic land reptile, fossils are found in South America and Africa.The Triassic era was between 250,000,000 and 200,000,000 years ago.Please feel free to refine this list and repost it, just please preserve the photo credits and links to photographers.
By measuring the ratio of carbon-14 in a younger fossil, scientists can estimate its age.
These fossilized bacterial colonies date back 2.7 billion years and may extend 3.4 billion years.
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These reasons will work from the general to the specific.
When a species gets split into two groups by a river, mountain range, island, lake, or ocean via earthquakes, floods, droughts, climate change, or continental drift, the two populations will begin to drift genetically.
Mutations that reduce an organism’s ability to survive and reproduce will be less likely to end up in offspring.
There is so much in this world that only makes sense in the light of Evolutionary Theory. Some of these layers are from the decomposition of sediment, others come from chemical precipitation, others from decaying organic matter, and others from volcanic lava.
The reason we can see the layers is because they were formed in different ways.
Mutations that give an organism a survival and reproductive advantage will be more likely to show up in offspring.