Showing posts with label biology. Show all posts
Showing posts with label biology. Show all posts

Tuesday, July 14, 2009

Pot-Bellied Dinosaur Skeleton Found in Utah

The kind of dumbed-down science writing I hate, but that's the world we live in these days apparently.

But still, anything about therizinosaurs is welcome in my view.


The most complete skeleton of a type of pot-bellied dinosaur, a therizinosaur, has been discovered in southern Utah.

Such remains shed light on the evolution of leafy and meaty diets back in paleo times, suggesting that iconic predators like Velociraptor may have evolved from less fearsome plant-eating ancestors.

The newly discovered dinosaur, dubbed Nothronychus graffami, lived some 93 million years ago. When alive, the animal would have stood at 13 feet (4 meters) and sported a beaked mouth and forelimbs tipped with 9 inch- (22 cm)-long sickle claws.

Its stumpy legs, large gut and other features suggest the lumbering giant scarfed down plants rather than chasing after meaty prey.

Article here


This is the second species assigned to the genus Nothronychus.

The genus even has its own YouTube tribute!



Very interesting to see the range of ideas these days about how to depict what dinosaurs may have looked like.

Posted via email from Garth's posterous

Saturday, May 23, 2009

Junk DNA not actually junk


May 23, 2009

“JUNK” DNA: Not actually junk. “Now researchers from Princeton University and Indiana University who have been studying the genome of a pond organism have found that junk DNA may not be so junky after all. They have discovered that DNA sequences from regions of what had been viewed as the ‘dispensable genome’ are actually performing functions that are central for the organism. They have concluded that the genes spur an almost acrobatic rearrangement of the entire genome that is necessary for the organism to grow.”
 
 

Posted via email from Garth's posterous

Saturday, May 9, 2009

Video: In the Womb: Extreme Animals

 
For Mother’s Day tomorrow, the National Geographic Channel has a fascinating show in the works, titled In The Womb: Extreme Animals, exploring the reproduction of four different animals with real-time 4D ultrasound images. Here’s a video clip of the section dealing with a penguin fetus and its extraordinary method of getting oxygen from its eggshell:
 
(You'll need to go  to Little Green Footballs to view the video.)
 

Posted via email from Garth's posterous