Evolution / Fossil Record
Evolution
A Timeline of Geologic and Evolutionary Events
The chart in this article provides brief information about the various eons, eras, periods, epochs, and ages that are used to describe the Earth's history.
The chart in this article provides brief information about the various eons, eras, periods, epochs, and ages that are used to describe the Earth's history.
London's Peppered Moth
Read about H.B.D. Kettlewell, an English physician with an interest in butterfly and moth collecting, who in the 1950's decided to study the unexplained color variations of the peppered moth.
Read about H.B.D. Kettlewell, an English physician with an interest in butterfly and moth collecting, who in the 1950's decided to study the unexplained color variations of the peppered moth.
The Evolutionary Lessons of Marsupials
I'd wager that a marsupial mammal, given a lecture hall and a podium, could teach a fantastic course in evolution. Over millions of years, these amazing creatures have seen it all: divergent evolution, parallel evolution, and convergent evolution.
I'd wager that a marsupial mammal, given a lecture hall and a podium, could teach a fantastic course in evolution. Over millions of years, these amazing creatures have seen it all: divergent evolution, parallel evolution, and convergent evolution.
A Brief History of Life on Earth
To better understand the animals that inhabit our present-day world, it helps to examine the broad history of life. By grasping how organisms, past and present, have evolved and diversified throughout the history of our planet, we can better appreciate the animals and wildlife that surround us today.
To better understand the animals that inhabit our present-day world, it helps to examine the broad history of life. By grasping how organisms, past and present, have evolved and diversified throughout the history of our planet, we can better appreciate the animals and wildlife that surround us today.
Vertebrate Evolution
Vertebrates are well-known group animals that include mammals, birds, reptiles, amphibians, and fish. The defining characteristic of vertebrates is their backbone, a trait that showed up in the fossil record about 500 million years ago during the Ordovician period.
Vertebrates are well-known group animals that include mammals, birds, reptiles, amphibians, and fish. The defining characteristic of vertebrates is their backbone, a trait that showed up in the fossil record about 500 million years ago during the Ordovician period.