Around 210 million years ago, life on Earth experienced sweeping
changes. Many archaic reptiles and mammalian predecessors became
extinct and were replaced by dinosaurs, pterosaurs, crocodiles,
turtles, mammals, and essentially all of the major modern
vertebrate groups except the birds. This period of change, which
took place over a period of approximately five to ten million
years, ushered in the beginning of the 'Age of Dinosaurs,' a period
that lasted 160 million years to the end of the Cretaceous 65
million years ago. In the past decade, paleontologists have come to
know a great deal more about this crucial interval of time. New
discoveries, ideas, and insights from scientists in many related-
disciplines have created new paradigms about the beginning of the
'Age of Dinosaurs.' What were the animals that preceded the
dinosaurs like? How did the dinosaurs originate, and what do we
know of their early history? Was their ascent tied to evolutionary
innovations, global climatic and ecological changes, or just chance
factors? How do paleontologists decide about the evidence preserved
in the fossil record, and what areas now require major thought and
reevaluation? In this book, 31 specialists in the paleontology of
this era consider these and other questions related to Late
Triassic and Early Jurassic times - the beginning of the 'Age of
Dinosaurs,' its fauna, flora, climate, stratigraphic relationships,
and major evolutionary changes. The book is divided into sections
on background, Late Triassic taxa and faunas, changes across the
boundary, Early Jurassic taxa and faunas, and major
macroevolutionary patterns. This comprehensive volume is richly
illustrated and is intended for students and professionals in the
areas of paleontology, evolutionary biology, geology, and
vertebrate zoology. Introductory and summary chapters are provided
to acquaint the non-specialist with the issues and the setting of
this interval of time in which the ancestral components of the
modem fauna, as well as the Dinosauria, first appeared to rule the
Earth.
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