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Early Mammals

Jaws -- 4 million BC: How an extinct shark attacked its prey

1000pa (Mar. 17, 2010) — It might sound like a mashup of monster movies, but palaeontologists have discovered evidence of how an extinct shark attacked its prey, reconstructing a killing that took place 4 million years ago.

Such fossil evidence of behaviour is incredibly rare, but by careful, forensic-style analysis of bite marks on an otherwise well-preserved dolphin skeleton, the research team, based in Pisa, Italy, have reconstructed the...

1000pa (Mar. 17, 2010) — It might sound like a mashup of monster movies, but palaeontologists have discovered evidence of how an extinct shark attacked its prey, reconstructing a killing that took place 4 million years ago.

Such fossil evidence of behaviour is incredibly rare, but by careful...

Ancient DNA from rare fossil reveals that polar bears evolved recently and adapted quickly

1000pa (Mar. 1, 2010) — A rare, ancient polar bear fossil discovered in Norway in 2004 is yielding a treasure trove of essential information about the age and evolutionary origins of the species whose future is now seen as synonymous with the devastation wrought by climate change.

A paper published in the current issue of the Proceedings of the National Academy of Sciences by researchers at Penn State University, the University at Buffalo,...

1000pa (Mar. 1, 2010) — A rare, ancient polar...

Link between marine algae and whale diversity over last 30 million years, study finds

1000pa (Feb. 22, 2010) — A new paper by researchers at George Mason University and the University of Otago in New Zealand shows a strong link between the diversity of organisms at the bottom of the food chain and the diversity of mammals at the top.

Mark D. Uhen, a geologist at Mason, says that throughout the last 30 million years, changes in the diversity of whale species living at any given time period correlates with the evolution and...

1000pa (Feb. 22, 2010) — A new paper by...

Human gait adapted for efficient walking at the cost of efficient running

1000pa (Feb. 12, 2010) — Humans, other great apes and bears are among the few animals that step first on the heel when walking, and then roll onto the ball of the foot and toes. Now, a University of Utah study shows the advantage: Compared with heel-first walking, it takes 53 percent more energy to walk on the balls of your feet, and 83 percent more energy to walk on your toes.

"Our heel touches the ground at the start of each step. In most...

1000pa (Feb. 12, 2010) — Humans, other great...

Ancient crocodile relative likely food source for Titanoboa, largest snake ever known

1000pa (Feb. 3, 2010) — A 60-million-year-old relative of crocodiles described recently by University of Florida researchers in the Journal of Vertebrate Paleontology was likely a food source for Titanoboa, the largest snake the world has ever known.

Working with scientists from the Smithsonian Tropical Research Institute in Panama, paleontologists from the Florida Museum of Natural History on the UF campus found fossils of the new species...

1000pa (Feb. 3, 2010) — A 60-million-year-old...

Why did mammals survive the 'K/T extinction'?

1000pa (Feb. 10, 2010) — Picture a dinosaur. Huge, menacing creatures, they ruled the Earth for nearly 200 million years, striking fear with every ground-shaking stride. Yet these great beasts were no match for a 6-mile wide meteor that struck near modern-day Mexico 65 million years ago, incinerating everything in its path. This catastrophic impact -- called the Cretaceous-Tertiary or K/T extinction event -- spelled doom for the dinosaurs...

1000pa (Feb. 10, 2010) — Picture a dinosaur...

First Bird

First Bird
What was the earliest known bird?

Unexplained artifacts

unexplained artifacts
The 10 most amazing unexplained artifacts

Evolution

Timeline: Human Evolution

Biggest Dinosaurs

The 10 Biggest Dinosaurs

Fossils 

Fossil Formation: How Do Fossils Form?
 

Book review

Dinosaurs Encyclopedia

Book Review

Dinosaurs: The Most Complete, Up-to-Date Encyclopedia for Dinosaur Lovers of All Ages ... WRITTEN BY A PROFESSIONAL paleontologist specifically for young readers, this guide to the Dinosauria is packed...