Archive for May, 2015

Archaeornithura meemannae : a new bird fossil

Scientists in China have described a new species of early bird, from two fossils with intact plumage dating to 130 million years ago. Based on the age of the surrounding rocks, this is the earliest known member of the clade that produced today’s birds: Ornithuromorpha.It pushes back the branching-out of this evolutionary group by at […]

Rupture along the Himalayan Front

In their article for Lithosphere on 12 March, authors Kristin Morell and colleagues write, “The ∼700-km-long ‘central seismic gap’ is the most prominent segment of the Himalayan front not to have ruptured in a major earthquake during the last 200-500 years. This prolonged seismic quiescence has led to the proposition that this region, with a […]

WFS: Ariyalur Fossils ( Arctostrea )

WFS: Ariyalur Fossils ( Arctostrea ):   This upper Cretaceous oyster is characterized by long and curved valves. Stout ribs cross the upper valve. The sample is obtained from Ariyalur/Dalmiapuram area. samples collected by Riffin T Sajeev and Russel T Sajeev from World Fossil society. The Rastellum genus of oysters lived between 161 to 65 million […]

Brachiopod shell shows sign of evolution

Researchers of Ludwig-Maximilians-Universitaet (LMU) in Munich have carried out the first detailed study of the molecular mechanisms responsible for formation of the brachiopod shell. Comparison with shell synthesis in other groups reveals the deep evolutionary roots of the process. Brachiopods (lamp shells) are marine invertebrates, which were a highly successful and widespread group in the […]