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Mammals

New Rodent Discovered in Southeast Asia
May 16, 2005
“To find something so distinct in this day and age is just extraordinary,” says Dr. Robert Timmons of a stubby-legged, hairy rodent discovered in Thailand.  “For all we know, this could be the last remaining mammal family left to be discovered.”  It’s not exactly like a squirrel, rat, chinchilla or guinea pig: it belongs in […]
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Fossils

More Convergent Evolution Claimed for Dino-Era Mammal
April 1, 2005
A chipmunk-size mammal with Popeye-like forearms and beaver-like teeth resembling an armadillo?  That’s how the discoverers are describing the fossil they named Fruitafossor, a small mammal found near Fruita, Colorado and reported in Science.1  They think it dug burrows and ate termites.  Of special interest were the open-root teeth like those of the beaver.  Lead […]
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Mammals

Migration Theory Overturned: “Mammals Went Crazy” – Or Did Darwinists?
March 29, 2005
The discovery of an elephant shrew fossil in Wyoming badlands said to be 54 million years old is causing a stir.  Elephant shrews were thought to be endemic to Africa, the alleged cradle of mammals.  This find hints not only that elephant shrews may have originated in North America instead, but also that “there may […]
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Mammals

Wonders from the Animal World
March 24, 2005
Several recent stories prove that animals continue to amaze us with their tricks: Elephants:  The BBC News summarized a report from Nature1 about an elephant in Kenya named Mlaika that could make “convincing truck sounds.”  The elephant lived near a road and apparently learned how to do impressions.  This is the only other case of […]
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Fossils

Horse Evolution Is Back on the Charts
March 18, 2005
The old horse-evolution charts from the 1880s have been revised substantially since 1920 when paleontologists began to realize the story was not so simple.  (Thomas Huxley had used the series of O. C. Marsh as a focal point of his 1876 lecture tour in the United States.)  These charts portrayed small horses with three toes […]
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Fossils

Can Evolution Repeat Itself?
February 10, 2005
A press release from University of Chicago reported today that “115-million-year-old fossil of a tiny egg-laying mammal thought to be related to the platypus provides compelling evidence of multiple origins of acute hearing in humans and other mammals” (emphasis added in all quotes).  The fossil apparently shows inner-ear bones in the monotreme lineage that supposedly […]
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Fossils

Bat Theory Strikes Out
January 28, 2005
An international team of biologists set out to write the family history of bats, a story that is “largely unknown,” they admitted in Science.1  They didn’t have much to go on.  “The fossil record is impoverished,” their research confirmed, so they tried to piece together a phylogenetic story by combining all that is known about […]
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Mammals

Hippo to Whale: Missing Chain
January 26, 2005
Despite claims to the contrary,2 whale and hippo evolution are poorly understood.  That’s the gist of a paper in PNAS this week1 that tries to connect the dots between hippopotami (artiodactyls) and whales (cetaceans) and other groups of mammals.  There’s lots of missing dots:  The origin of late Neogene Hippopotamidae (Artiodactyla) involves one of the […]
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Dinosaurs

This Badger Ate Dinosaurs for Breakfast
January 12, 2005
BBC News claims a new fossil discovery published in Nature,1 a large badger-like carnivorous mammal, ate dinosaurs for lunch.  But then again, who knows what time of day the Cretaceous restaurants were open?     The fossil, another in a series of spectacular finds from the Liaoning Province in China, is creating a sensation, because […]
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Darwin and Evolution

Introducing the Stretch & Squish Theory of Evolution
December 14, 2004
How do you squish an arm into a wing, or stretch a fin into a leg? This sounds like the silly putty theory of evolution.
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Human Body

Monkeys Have No Ear for Music
December 13, 2004
Consonance and dissonance have no meaning to monkeys, studies have shown.  Nature Science Update reported on experiments on cotton-top tamarins showing that, unlike humans, they do not find consonant tones more pleasing than dissonant ones. “If you want to look at the evolution of music it’s important to do these types of studies,” says Laurel […]
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Birds

Crows and Apes Related by Convergent Evolution
December 9, 2004
Scientists have noticed that crows have some of the same tool-making skills as apes, and in fact, are even better tool makers.  How could such vastly different animals show such similar mental skills?  Science1 explains this as another example of convergent evolution: Discussions of the evolution of intelligence have focused on monkeys and apes because […]
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Biology

Platypus Has 10 Sex Chromosomes
October 29, 2004
The duck-billed platypus has thrown another curveball at evolutionary theory.  Long puzzling to phylogenists for its mosaic of features that make it seem part mammal, bird and reptile, it has now revealed a genome with 10 sex chromosomes – 10 X in the female, and 5 X plus 5 Y in the male.  Moreover, the […]
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Human Body

Your Brain Hums While Idling
October 11, 2004
Your brain is 100% occupied when watching and concentrating on things, and still processing at 80% in the dark when idle, say researchers at University of Rochester.  Opening your eyes only adds 20% more brain activity to the 80% while in neutral.  The amount of neural processing going on in idle mode surprised the researchers.  […]
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Amazing Facts

Your Eyes Have Automatic Light Meters
October 1, 2004
Every pupil knows that pupils constrict in bright light and dilate in dim light, but how?  Physiologists had assumed the retina signalled the iris muscles, but now it appears there is an independent mechanism in the iris itself, at least in birds, and probably in mammals, too.  A report in EurekAlert summarizes a finding from […]
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