COSEE Ocean Systems: News
Skeletons evolved as ocean chemistry changed
Description: Skeletons and shells first came into being 550 million years ago as the chemical make-up of seawater changed, a study suggests. Ancient marine life may have developed from soft-bodied animals into creatures with hard body parts as oxygen levels rose and calcium and magnesium levels in prehistoric oceans changed, researchers say. [Source: University of Edinburgh]
Availability: Full Text
Source: University of Edinburgh
Publish Date: 4/4/2017
Reading Level: Basic
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