Using high resolution CT scanners, researchers scanned the fossilized skulls of what they claim are the ‘oldest’ mammals and ‘proto’ mammals.  Supposedly these fossils date back to 190 million years ago and older.  The purpose of the scans was to study the size and shape of the brain by scanning the braincase inside the skulls.  Scanning allowed them to do this without cutting open the skulls and destroying them.

The results of the scans showed that the skulls of the ‘earliest’ mammals, Morganucodon oehleri and Hadrocodium wui, not only had larger brains than the ‘proto’ mammals, but the areas that showed the greatest size difference was the area associated with smell.

Professor Timothy Rowe from the University of Texas at Austin and his colleagues concluded that smell drove the evolution of larger brains in mammals.  Based on just the scans of the braincases, Rowe believes that these ‘earliest’ mammals began hunting at night to avoid competing with dinosaurs for food.  Hunting at night caused them to rely on their sense of smell. The more they relied on smell, the more that area of the brain associated with smell evolved, spurring the evolution of the growth of mammal’s brains.

In the past researchers focused their attention on teeth and broken jaws to make their evolutionary speculations about mammal evolution.  From that evidence, they keyed on feeding and hearing as the senses that drove the evolution of mammals.

The new results are causing evolutionists to rethink their theories of mammal evolution and what caused their brains and bodies to increase in size over millions of years.

So based upon the fact that different animals have different sized brains and areas of the brains are different, the researchers conclude that the sense of smell was responsible mammal evolution.

Relatively speaking, man has the worst sense of smell than most mammals.  Dogs, cats, bears, elephants, cattle, pigs and even mice have a much more sophisticated sense of smell than humans, and yet we have the most complex brain of all living creatures.

From a biblical point of view, I would conclude that God designed some animals with a better sense of smell than others.  Consequently, the areas of the brain that process smells in these animals would be more pronounced and larger than those that didn’t rely on smell as much.

Since the ‘proto’ mammals and ‘earliest’ mammals seemed to possess different traits such as sense of smell, that they most likely occupied different habitats or different niches within the same habitat.  As the Genesis Flood inundated the earth, different locations and habitats would have been buried by water and sediment at different times, thus causing some animals to be buried in lower strata than others.

To be honest, their theory of smell driving the evolution of the mammalian brain stinks because it is based on the rotting carcass of the godless religion of evolution.


Gill, Victoria, Mammal’s Large Brains Evolved for Smell, BBC News, May 20, 2011.

Ross, Valerie, Mammals’ Big Brains Started with Better Sense of Smell,, May 20, 2011.

Dinosaurs And The Bible

Has anyone ever seen a real live dinosaur? Do dinosaurs prove that the Bible is wrong? What happened to the dinosaurs? A brilliant illustrated presentation that lets you find out the answers to the most-asked questions about dinosaurs, and why everyone should know about them. (High SchoolAdult Level)

DVD, 52 minutes

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