Evolutionary biologists believe that dolphins emerged 20 to 25 million years ago during the early Miocene period. Modern species may trace to kentriodontids, which are small-toothed whales believed to have the echolocati... More »

Generally speaking, the DARPA research project known as ARPANET has been defined as the "beginning" of the Internet, as it was the first instance of resources shared over a wide area network. It first came to life in Sep... More »

Cars in their modern form have been around since 1885, when German engineer Karl Benz made the first working automobile powered by an internal combustion engine. Prior to Benz's creation, steam-powered automobiles had be... More »

The gray wolf (Canis lupis) originated in Eurasia during the Pleistocene era, approximately one million years ago, and migrated to North America roughly 750,000 years ago. Wolf ancestors emerged in the Paleocene era, som... More »

The first hominids developed in Africa more than six million years ago, but modern humans have existed for approximately 200,000 years. They emerged in the Middle Paleolithic era, spreading from Africa to Europe and Asia... More »

Geological records show that modern shark species have existed for between 201 million and 174 million years. Earlier fish species similar to sharks existed as early as between 419 million and 359 million years ago. More »

www.reference.com Pets & Animals Marine Life Sharks

Fossil records show that the first whales lived approximately 50 million years ago, according to Encyclopedia Britannica. Primitive whales, belonging to the extinct suborder Archaeoceti, had features in common with land ... More »