Fossils and Living Species | AMNH
Fossils are the preserved remains or traces of animals, plants, and other . The process of a once living organism becoming a fossil is called fossilization. .. Examples of convergent evolution include the relationship between bat and insect. fossil species to analyses of living animals, as shown by scientists. our results show agreement between fossils and extant taxa, we feel it. Fossils are the *remains of extinct organisms (animals or plants that have no living examples of their species alive today). What is the relationship between fossils and extinction events? Now, when we look into this matter, Evolution and extinction happen side by side, and extinct.
If life has only existed on earth for six thousand years or so, how can life forms have changed so much?
There is a very simple answer to this question. Consider the plants and animals found in temperate climates, such as in the United States. Compare them to the plants and animals found in the Amazon jungle, or in a swampy region of the United States, or in the African Savannah.
There will be very few similarities. Probably very few of the birds, flowers, trees, et cetera from temperate climates will be found in the Amazon jungle. And probably very few plants and animals from the Amazon jungle will be found in the African Savannah.
It is hard to believe that such different ecologies could exist at the same time on the same planet, but it is so. This explains how the ecology in fossil layers can differ so much from that on earth today. Differences in climate and ecology explain the different kinds of organisms found in the past and today.
The existence of giant insects and birds suggests that something was very different in the past.
Fossils and Living Species
Perhaps the air pressure was higher and some past catastrophe caused much of the earth's atmosphere to be lost to space. Perhaps the composition of the atmosphere was somewhat different.
In addition, the fierce dinosaurs would have made life difficult for any modern mammals, which explains their absence from fossil layers containing dinosaurs.
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Why Are the Fossils so Different?
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