Biology Now, 2e

246 ■ CHAPTER 13 Adaptation and Species with either of the two original parent species (the gray and the Gambel), which of the f ...

Fast Lizards, Slow Corals ■ 247 For more, visit digital.wwnorton.com/bionow2 for access to: the old West. During the late 1800s ...

The First Bird A fresh wave of fossils challenges the identity of the first dino-bird. ◆ (^) Identify critical events on a time ...

249 BIODIVERSITY 14 CHAPTER THE HISTORY OF LIFE ...

250 ■ CHAPTER 14 The History of Life BIODIVERSITY a hypothesis, but a well-established scientific theory backed by a mountain of ...

The First Bird ■ 251 could contain nearly a trillion species. So far, about 1.5 million species have been collected, named, and ...

252 ■ CHAPTER 14 The History of Life BIODIVERSITY Precambrian Cambrian Ordovician Silurian Devonian Carboniferous 4.6 3.8 540 49 ...

The First Bird ■ 253 Mesozoic Cenozoic Permian Triassic Jurassic Cretaceous Paleogene/Neogene Quaternary 300 250 200 145 65 Age ...

254 ■ CHAPTER 14 The History of Life BIODIVERSITY some combination of these. An evolutionary tree maps the relationships between ...

The First Bird ■ 255 separate lineages. A node represents the most recent common ancestor of two lineages in question—that is, t ...

256 ■ CHAPTER 14 The History of Life BIODIVERSITY like a bird and the more it looked like a raptor. Early birds have small, thic ...

The First Bird ■ 257 fossil record during this time, popularly known as the Cambrian explosion. The Cambrian explosion changed t ...

Animal-like protists are consumers. Fungus-like protists are decomposers. Plant-like protists are photosynthetic. Diplomonads, o ...

Plants Amoebas, others Animals Fungi Zygomycetes (molds) Ascomycetes (sac fungi) Basidiomycetes (club fungi) Fungi digest organi ...

260 ■ CHAPTER 14 The History of Life BIODIVERSITY Kingdom Phylum Class Order Family Genus Species Animalia Chordata Mammalia Pri ...

The First Bird ■ 261 Tussling with Trees In January 2013, a year and a half after Xu published his controversial paper about Xia ...

262 ■ CHAPTER 14 The History of Life BIODIVERSITY Eosinopteryx Roadrunner Dromaeosaurids Troodontids Aurornis Anchiornis Xiaotin ...

The First Bird ■ 263 this has happened—that is, the number of species that have gone extinct during a given period—has varied ov ...

Number of species known to be extinct or extinct in the wild since 1500 Ghosts of species past The Sixth Extinction On at least ...

The First Bird ■ 265 about 65 mya and wiped out three-fourths of plant and animal species on Earth, including non-avian dinosaur ...