A tiny fossil, Acronichthys maccognoi, rewrites fish evolution in North America and reveals how otophysans conquered freshwater habitats.
The findings show that the common ancestor of the extant fungi was about 1.4 to 900 million years ago. That is far earlier ...
In a new study, scientists look closely into “chemical fossils” in rocks, indicating that sponges were alive more than 541 ...
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