Evolution What the Fossils Say and Why it Matters

Life’s Origins 155 liquid water to condense and form oceans much before 4.0 billion years ago, but tiny zircon grains from Austr ...

156 Evolution? The Fossils Say YES! Recipe for Primordial Soup It is often said that all the conditions for the first production ...

Life’s Origins 157 have been produced in many other places in the universe. Some scientists even speculate that the earth was “s ...

158 Evolution? The Fossils Say YES! In the 1980s and 1990s, scientists thought that ammonia and methane were not common in the e ...

Life’s Origins 159 Mosh Pits, Fool’s Gold, Kitty Litter, Black Smokers, and Mud Their bacterial plight was pathetic It’s hard to ...

160 Evolution? The Fossils Say YES! FIGURE 6.5. Some organic chemicals have properties that enable cells to form naturally witho ...

Life’s Origins 161 There are many possibilities for natural substances that could produce just such a tem- plate for organic mol ...

162 Evolution? The Fossils Say YES! a presentation of these remarkable discoveries given by the very scientists who had just lef ...

Life’s Origins 163 On the other hand, many scientists have suggested that this is a highly unparsimoni- ous and implausible hypo ...

164 Evolution? The Fossils Say YES! Communal Living Builds Complex Cells We are symbionts on a symbiotic planet, and if we care ...

Life’s Origins 165 has the identical 9 + 2 fiber structure (nine sets of microtubule doublets surrounding a pair of single micro ...

166 Evolution? The Fossils Say YES! independent reproductive mechanisms; they are not made by the cytoplasm of the cell. If a ce ...

Life’s Origins 167 many bacteria use to secrete toxins. This example of co-option is regarded as strong evidence against Behe’s ...

168 Evolution? The Fossils Say YES! and there, you can start with a simple pathway (which is still adaptive) and improve it unti ...

Life’s Origins 169 Schidlowski, M., P. W. U. Appel, R. Eichmann and C. E. Junge. 1979. Carbon isotope geochemistry of the 3.7 × ...

FIGURE 7.1. A diorama of how life might have looked on this planet for almost the first 80 percent (3 billion years) of its hist ...

7 Cambrian “Explosion”—Or “Slow Fuse”? The Creationists’ Favorite Myth To the question why we do not find rich fossiliferous dep ...

172 Evolution? The Fossils Say YES! are nearly always microscopic. It wasn’t until the 1940s and 1950s that Stanley Tyler and El ...

Cambrian “Explosion”—Or “Slow Fuse”? 173 Step 2: The Garden of Ediacara Aspiring paleontologists are typically attracted to the ...

FIGURE 7.2. The Ediacara fauna consists of the impressions of soft-bodied fossils without skeletons, whose biological affinities ...