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| Extinct, Dinosaur Diorama |
Viewed: 3163 times
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| Extinct, Seacow (Dugong) |
Viewed: 2184 times
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| Asteroid Catastrophe or Interplanetary Seeding? |
Viewed: 2183 times
01/14/09 |
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| Martinique Lizard (Leiocephalus herminieri), extinct |
Viewed: 2274 times
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| Extinct, Mammoth |
Viewed: 1873 times
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| Extinct, Giant Sloth |
Viewed: 1969 times
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| Extinct, Ivory Billed Woodpecker |
Viewed: 2134 times
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| Endangered, Rhino |
Viewed: 1854 times
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| Extinct, Dodo |
Viewed: 1930 times
01/14/09 |
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| Ornithomimus or bird-like dinosaur, extinct |
Viewed: 1708 times
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| Round Island Boa (Bolyeria Multocarinata), extinct |
Viewed: 1821 times
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| Brachiosaurus, extinct |
Viewed: 1709 times
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| Tyrannosaurus, extinct |
Viewed: 1568 times
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| Carolina parakeet (Conuropsis carolinesis), extinct |
Viewed: 1808 times
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| Extinct, Pink-headed ducks |
Viewed: 1487 times
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| Extinct, Passenger Pigeon |
Viewed: 1365 times
01/14/09 |
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| Akialoa, extinct |
Viewed: 1671 times
01/14/09 |
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| Threatened, Jaguar, Jungle habitats |
Viewed: 1466 times
01/14/09 |
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| Quagga (Equus Quagga), extinct |
Viewed: 1601 times
01/14/09 |
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| Japanese Wolf (Canis Lupus Hodophilax), extinct |
Viewed: 1669 times
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| Extinct, Pacific Island Grosbeak |
Viewed: 1640 times
01/14/09 |
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Viewed: 1354 times
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Viewed: 1321 times
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Viewed: 1434 times
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Viewed: 1356 times
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| Spiny acritarchs preserved in Doushantuo cherts |
Viewed: 1783 times
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| spiny-acritarchs1 |
Viewed: 1560 times
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| DoushantuoBranchingTubes |
Viewed: 1525 times
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An artist's reconstruction shows a curled-up dinosaur embryo inside an egg. The actual egg is a little more than 2 inches (6 centimeters) in length. Image: Kevin Dupuis, University of Toronto at Mississauga
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Adult Massospondylus and embryo, Image: Robert Reisz, University of Toronto at Mississauga
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Viewed: 2067 times
01/14/09 |
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Cyanobacteria Bloom in Lake Ponchartrain, LA, an oligohaline estuary
Credit: View |
Viewed: 1621 times
01/14/09 |
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| Warrior anemones reach over from several rows behind the front to attack animals from a neighboring colony. (Rick Grosberg/UC Davis photo) |
Viewed: 1609 times
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This picture shows how DNA bases are stacked together along the double helix. The atoms of the sugar-phosphate backbone are shown in gray, and the ultraviolet-absorbing portions of DNA -- the bases -- are shown in blue or magenta, depending on which side of the DNA strand they are located. Image courtesy of Bern Kohler, Ohio State University.
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Viewed: 1923 times
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This graph shows how quickly ultraviolet (UV) energy deposited in the electrons of a nucleoside is converted to heat, which is then absorbed by water surrounding the nucleoside. Here, time is measured in femtoseconds, or quadrillions of a second. The diagram to the upper right of the image depicts a particular nucleoside -- adenosine. This molecule consists of a UV-absorbing base (shown in red) and a simple sugar (shown in gray) that binds it to the RNA backbone. This base is also found in DNA. Credit: Ohio State University
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| Radiocarbon peaks in Icelandic marine sediment samples, indicated by the black line, coincide with three supernova-caused events that Firestone and Wells believe led to the extinction of the mammoth. Credit: Berkeley Lab |
Viewed: 1565 times
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Mammoths
Credit: USGS |
Viewed: 1613 times
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Female Leah Using a Walking Stick while Crossing Bipedally through an Elephant Pool at Mbeli Bai.
Credit: PLoS |
Viewed: 1703 times
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Female Efi Using Trunk as a Stabilizer during Food Processing at Mbeli Bai
The top photo shows the intact trunk shortly before Efi manipulated it. The trunk was then detached by female Efi with both hands, pushed into the ground, and used as a stabilizing stick while dredging aquatic herbs towards her with her other hand. From: PLoS Biol 3(11): e380
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Female Leah Using a Walking Stick while Crossing Bipedally through an Elephant Pool at Mbeli Bai
Female Leah first looked at the new elephant pool and the branch she later used as the walking stick, and entered the water without the tool (not shown). After re-entering the pool and taking the branch with her right hand, she walked bipedally 8–“10 m into the water, frequently testing water deepness.
From: PLoS Biol 3(11): e380
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Viewed: 1816 times
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Photo of reconstructed skeleton of Buitreraptor gonzalezorum. The long hindlimbs indicate that the animal was a fast runner. The elongated arms and massive shoulder girdle indicate powerful prey-grasping abilities. Like all other dromaeosaurs, Buitreraptor was armed with an enlarged claw on the second toe of each foot.
© 2005 The Field Museum, Photo by John Weinstein, image# GEO86430_30d
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Viewed: 1820 times
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The skeleton of Buitreraptor gonzalezorum in the field. A string of vertebrae and the right shoulder (lower left) and femur are showing. The match-stick shows scale.
Photo by Peter Makovicky, Courtesy of The Field Museum
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Viewed: 1781 times
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The Buitreraptor gonzalezorum quarry. The holotype specimen was extracted in an 800-pound block of sandstone that took 10 days to extract using a rock-saw and chisels. The picture shows Field Museum preparator Jim Holstein (left) and Argentine paleontologist Pablo Gallina at work. Temperatures soared above 100? F on most days. Fieldwork was supported by NASA, The Jurassic Foundation, and Michael and Jacqueline Ferro of Chicago.
Photo by Peter Makovicky, Courtesy of The Field Museum
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Viewed: 1868 times
01/14/09 |
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| Dinosaur Landscape |
Viewed: 1389 times
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Skeleton of Microraptor gui, a feathered dinosaur from the early Cretaceous (about 125 million years old) of China has preserved traces of feathers in the wings and legs, suggesting a biplane configuration. The animal was about 30 inches long with a bony tail and weighed about 2 pounds (courtesy: Dr. Xing Xu)
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| A biplane glider Microraptor gui from China compared with the Wright 1903 Flyer. Microraptor invented the biplane 125 million years ago (courtesy: Jeff Martz). |
Viewed: 1611 times
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Fruit fly Drosophila melanogaster
Credit: UCSD
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Viewed: 1492 times
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Bonnet macques, India
Credit: Illinois St. University, Mary H. Lee |
Viewed: 1542 times
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| Bumblebee solving a complex color puzzle. Credit: University College London |
Viewed: 1506 times
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| Credit: NASA |
Viewed: 1419 times
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