mammals
grrlscientist | March 20, 2010tags: Life, Discovery Channel, Reptiles and Amphibians, Komodo Dragons Hunt Buffalo, animals, mammals, birds, BBC, television, streaming video
Gail Weiswasser at the Discovery channel emailed a few days ago to tell me about the upcoming March 21 premiere on the Discovery Channel of BBC's LIFE, the 11-part follow up to PLANET EARTH (the most successful natural history documentary of all time). While PLANET EARTH told the story of the natural world through the framework of our planet's ecosystems and regions, LIFE takes us on a more intimate journey, introducing different animal and plant…
laelaps | March 19, 2010
The skeleton of an elk-moose (Cervalces scotti), photographed at the New Jersey State Museum.
grrlscientist | March 19, 2010tags: Life, Discovery Channel, BBC, Challenges of Life, Stalk-Eyed Fly, animals, mammals, birds, television, streaming video
Gail Weiswasser at the Discovery channel emailed a few days ago to tell me about the upcoming March 21 premiere of BBC's LIFE on the Discovery Channel. LIFE is the 11-part follow up to PLANET EARTH (the most successful natural history documentary of all time). While PLANET EARTH told the story of the natural world through the framework of our planet's ecosystems and regions, LIFE takes us on a more intimate journey, introducing different animal and plant groups, using…
laelaps | March 18, 2010
The preserved head of a California sea lion (Zalophus californianus), dissected and dyed to show some of the glands inside the head. From the collections of the New Jersey State Museum (originally from the College of New Jersey).
laelaps | March 18, 2010
A photograph and line drawing (left side) of the fossil dolphin Astadelphis gastaldii. The crescent-shaped line in the line drawing represents the bite of a large shark, with the red portions representing damage done directly to the bone. From Bianucci et al, 2010.
Shark attacks are events of speed and violence. When they have locked on to a prey item sharks seem to come out of nowhere, and though they can be quite gentle with their jaws (as on occasions when they are unsure about whether something is food or not) their ranks of serrated teeth can inflict a devastating amount of damage.…
grrlscientist | March 18, 2010tags: Life, Discovery Channel, Challenges of Life, Cheetas Hunting Ostrich, animals, mammals, birds, television, BBC, streaming video
Gail Weiswasser at the Discovery Channel emailed a few days ago to tell me about the upcoming March 21 premiere of BBC's LIFE, the 11-part follow up to PLANET EARTH (the most successful natural history documentary of all time). While PLANET EARTH told the story of the natural world through the framework of our planet's ecosystems and regions, LIFE takes us on a more intimate journey, introducing different animal and plant groups, using the latest in HD filming…
laelaps | March 16, 2010
Small-clawed otters (Aonyx cinerea) anxiously await a fishcicle treat. Photographed at the Bronx Zoo.
laelaps | March 14, 2010
A California sea lion pup (Zalophus californianus), photographed at the Bronx Zoo.
laelaps | March 13, 2010I love the work that Larry Witmer and his students do at Ohio University. Not only is it cutting-edge anatomical research that helps us better understand prehistoric organisms, but the Witmer lab is constantly sharing parts of their work via the web. They even have their own YouTube feed with lots of 3D renderings of fossil animals, including one of my favorite prehistoric mammals, Archaeotherium. The video below presents a view of its skull and brain cast, as well as a quick look at its jaws in action:
laelaps | March 11, 2010
A rock squirrel (Spermophilus variegatus), photographed at Dinosaur National Monument, Utah.
laelaps | March 10, 2010
A muskox (Ovibos moschatus), photographed in Alaska. From Flickr user drurydrama.
Of all the mass extinctions that have occurred during earth's history, among the most hotly debated is the one which wiped out mammoths, saber-toothed cats, giant ground sloths, and the other peculiar members of the Pleistocene megafauna around 12,000 years ago. It was not the most severe mass extinction, not by a long shot, but unlike the end-Cretaceous catastrophe 65 million years ago there is no single "smoking gun" that can account for the pattern of extinction. Instead the Pleistocene mass extinction…
laelaps | March 9, 2010
Charlotte yawns before washing herself, although, on the other hand, she does look like she could be laughing. Lol.
laelaps | March 9, 2010
A simplified evolutionary tree of primate relationships showing the placement of Darwinius in relationship to other groups. From Williams et al., 2010.
The study of human origins can be a paradoxical thing. We know that we evolved from ancestral apes (and, in fact, are just one peculiar kind of ape), yet we are obsessed with the features that distinguish us from our close relatives. The "big questions" in evolutionary anthropology, from why we stand upright to how our brains became so large, are all centered around distancing us from a prehistoric ape baseline. Despite our preoccupation…
laelaps | March 7, 2010
A California sea lion (Zalophus californianus), photographed at the Central Park Zoo.
laelaps | March 5, 2010
A jaguar (Panthera onca). From Flickr user Prosper 973.
One year ago this week Macho B was euthanized. He had been captured in mid-February of 2009, the only known jaguar living inside the United States, but after he was caught and fitted with a radio collar his health quickly deteriorated. When he nearly stopped moving he was recaptured, taken to the Phoenix zoo, and put to sleep when it was discovered that he was suffering from irreparable kidney failure.
At first it seemed as if his capture was a lucky accident, but a later investigation by the Fish and Wildlife Service found that the…
laelaps | March 4, 2010Yellowstone National Park is an amazing place. I stayed there for three days longer than I had originally planned and I still was not ready to leave it. Even if I had spent another week there I still would not have seen all the natural wonders of the park, but fortunately the BBC recently sent film crews to Yellowstone to capture its natural history in every season. These vignettes were expertly strung together in the miniseries Yellowstone: Battle for Life, and embedded below is one of the scenes in which a fox tries to catch dinner in the middle of winter:
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