technology-news

Flowering plants originated on Earth 100 m yrs earlier than believed

Washington, Oct. 2 : Scientists have said that new fossils have suggested that flowering plants could have originated during the early Triassic, pushing the time believed by about 100 million years.


Flowering plants evolved from extinct plants related to conifers, ginkgos, cycads, and seed ferns. The oldest known fossils from flowering plants are pollen grains. These are small, robust and numerous and therefore fossilize more easily than leaves and flowers.

An uninterrupted sequence of fossilized pollen from flowers begins in the Early Cretaceous, approximately 140 million years ago, and it is generally assumed that flowering plants first evolved around that time.

But the present study documents flowering plant-like pollen that is 100 million years older, implying that flowering plants may have originated in the Early Triassic (between 252 to 247 million years ago) or even earlier.

Peter Hochuli and Susanne Feist-Burkhardt from Paleontological Institute and Museum, University of Zurich, studied two drilling cores from Weiach and Leuggern, northern Switzerland, and found pollen grains that resemble fossil pollen from the earliest known flowering plants.

With Confocal Laser Scanning Microscopy, they obtained high-resolution images across three dimensions of six different types of pollen.

The samples from the present study were found 3000 km south of the previous site.

--ANI (Posted on 02-10-2013)

technology-news headlines

New groundbreaking technique may help cure diseases by 'editing' DNA

Ancient Antarctica was as warm as today's California coast

Domesticated chili pepper originated in Central-east Mexico

Neanderthals carried more copies of potentially detrimental mutations

'Upside-down planet' reveals new method for studying binary star systems

Learn why homo sapiens survived when others could not

New material prevents plastic from ageing

Know if you are an app addict

Animals with bigger brain size more intelligent

Now, a detector to distinguish 'sour' oil from 'sweet'

UV lamp of the future is here

Shrimp-inspired material to make airplanes stronger

Quick Links: Goa | Munnar | Pondicherry | Free Yearly Horoscope '2014

Comments

Your e-mail:


Your Full Name:


Type verification image:
verification image, type it in the box

Message:

Back to Top