Palaeontology

The stubby arms of Tyrannosaurus rex obviously weren’t designed for hand-to-hand combat. However, the abelisaurids of the Southern hemisphere were even less well equipped in that department–and upper limb reduction began very early in their evolution.

Although humans and woolly mammoths co-existed for millennia, the shaggy giants disappeared from the globe between 4,000 and 10,000 years ago, and scientists couldn't explain until recently exactly how the Flintstonian behemoths went extinct.

An 18-member international team of researchers that includes James Kennett, professor of earth science at UC Santa Barbara, has discovered melt-glass material in a thin layer of sedimentary rock in Pennsylvania, South Carolina, and Syria. According to the researchers, the material –– which dates back nearly 13,000 years –– was formed at temperatures of 1,700 to 2,200 degrees Celsius (3,100 to 3,600 degrees Fahrenheit), and is the result of a cosmic body impacting Earth.

A South African cave has revealed 14 new fossils for palaeoanthropological analysis which are discussed by Pickering et al (2012) published in the Journal of Human Evolution.

An international team of researchers, including a University of Virginia professor, has found that two ink sacs from 160-million-year-old giant cephalopod fossils discovered two years ago in England contain the pigment melanin, and that it is essentially identical to the melanin found in the ink sac of a modern-day cuttlefish.

Coelacanths, an ancient group of fishes once thought to be long extinct, made headlines in 1938 when one of their modern relatives was caught off the coast of South Africa. Now coelacanths are making another splash and University of Alberta researchers are responsible.

Dating technicals that can be used for the identification of fossils offer a glimpse into life's origins and can calibrate the Earth’s evolutionary clock.

Archaeocete, an ancient whale may have used skewed skulls for navigation when in water.