Posts treating: "animals"
Wednesday, 04 December 2013
Love in the Time of Chasmosaurs [2013-12-04 23:16:00]
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(11 visits) Mesozoic; US
Because Wayne Barlowe's an awfully talented sort of person, may I present a handful more of his dinosaur paintings, as featured in An Alphabet of Dinosaurs. On no account should you miss part 1 if you haven't seen it yet. Forward, Barlowe!One of the more striking aspects of Barlowe's work, coming as it does from the 1990s, is how much it presages certain trends in today's more, shall we say, avant-garde palaeoart. Of course, he also takes many cues from Kish and Henderson - I'd wager on the [...]
Image by Open Up!
What are Brachiopods?
Brachiopods are actually a PHYLUM of animals. That's right a whole GROUP of animals that most folks have probably never heard of!
image by Herman Giethoom
Brachiopods are a very old, group of invertebrates that live ONLY in the ocean. They have two shells (and are superficially similar to mussels) but are better known in several other
Love in the Time of Chasmosaurs [2013-10-21 21:18:00]
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(20 visits) Cenozoic,Mesozoic
We've established by now that John McLoughlin's Archosauria was a beautifully bold, often highly prescient book, dedicated to overturning notions of dinosaurs as 'great fossil lizards' that were nature's way of killing time before those 'superior' mammals took over the place. McLoughlin illustrated feathered theropods and supercharged sauropods at a time when the number of people doing so could be counted on one hand. Given its boldness, it's surprising that Archosauria so infrequently [...]
Animal populations can have a far more significant impact on carbon storage and exchange in regional ecosystems than is typically recognized by global carbon models, according to a new paper authored by researchers at the Yale School of Forestry & Environmental Studies (F&ES).
In fact, in some regions the magnitude of carbon uptake or release due to the effects of specific animal species
While nothing could match the feathered theropods in terms of sheer prescience, there were illustrations of other animals in Archosauria that were groundbreaking in their own, perhaps more subtle ways (and now you know I'm not referring to the ceratopsians). McLoughlin may have been skimpy on the sauropodomorphs, but what he did provide was a tantalising glimpse into an exciting new era of palaeoart.(Yes, I'm finally doing jump breaks.) While his assertion that Plateosaurus was an habitual [...]
If you’re a natural history fan and have been online at all this week, chances are you’ve seen
The National Speleological Society has announced a webinar on the biology of submerged caves. It will be held on Thursday, October 17th at 7:00 to 8:00 PM eastern time. Related: Troglobites: Animals that Live in a
Image by Yellowbeetlebug
Image by Jasdivr
One of the things I find fascinating about sea cucumbers is that they're basically a section of intestine, including the mouth and the anus which has evolved to live on its own. We sometimes think of animals by their most prominent features.. jaws in sharks, eyes in insects...
But Sea cucumbers are basically a big living gut! and have
How do we get sick? Let’s make a list… Genetic disorders; those we inherit from our parents Injuries Environmental issues (obesity, diabetes) Infection by bacteria Infection by fungi Infection by viruses Infection by animals (tapeworms, etc.) Infection by protozoans (ameobae, dysentery, etc.) Infection by carcinogenic cells (e.g. Tasmanian devil contagious mouth cancers) That last one may sound pretty weird, but today’s book is about a weirder one: Infection by proteins
The incredible burst of innovation in animals' body plans and habits during the Cambrian explosion, between 540 and 520 million years ago, can be explained by a reasonable uptick in evolutionary rates. The discovery, based on the first rigorous estimates of early evolutionary rates in arthropods, shows that evolution's "big bang" is compatible with natural selection as Darwin envisioned
Birth and early evolution of metazoans
1. Degan Shu (a)
2. Yukio Isozaki (b)
3. Xingliang Zhang (a)
4. Jan Han (a)
5. Shigenori Maruyama (c)
a. Early Life Institute and State Key Laboratory of Continental Dynamics, Northwest University, Xi’an 710069, P.R. China
b. Department of Earth Science and Astronomy, University of Tokyo, Tokyo 153-8902, Japan
August 21, 1986 was a busy market day in the village of Lower Nyos (Cameroon) and most people that evening went to bed early. At 9:30 p.m. a strange sound, like a distant explosion, was heard and suddenly people and animals tumbled onto the ground. When the few survivors awoke the next morning, they discovered
Oxygen, ecology, and the Cambrian radiation of animals
1. Erik A. Sperling (a)
2. Christina A. Frieder (b)
3. Akkur V. Raman (c)
4. Peter R. Girguis (d)
5. Lisa A. Levin (b)
6. Andrew H. Knoll (a,d)
a. Departments of Earth and Planetary Sciences and Organismic and Evolutionary Biology, Harvard University, Cambridge, MA 02138
b. Center for
Welcome to the Tyrannosaur Gallery, ART Evolved's final gallery for awhile.As readers have probably noticed, both Craig and I have been posting less frequently on this blog. In fact, we feel it is time to step back and take a break from ART Evolved for the time being. Life has a way of getting in the way of life, and Craig and I feel we can't commit the amount of time needed to keep up the quality of ART Evolved. We will leave the site online, but sleeping. Perhaps [...]
Continuing with the theme from my last post, here are some pieces of coquinoid limestone that are composed primarily of Agnostus pisiformis molts. They come from the Late Cambrian Alum Shale formation near Kinnekulle in Vastergotland, Sweden. It's amazing to see so many Trilobite molts all clumped together. There must have been so many of the animals that they looked like a swarm of bees or gnats or possibly a school of fish.Thanks to Christian for sending me these
Another item that my friend Christian sent me was this giant Heliophylum coral. It is a little over 6in (15cm) long and nearly 3in (7.5cm) wide. One side looks totally normal for a horn coral.... ..but as you turn it you can see that one side is nearly flat.This was the cup of the coralThe flat nature of the fossil is not a growth limit nor typical for the genera, rather it shows that this coral sat exposed on the seafloor after it died and toppled over. Time enough for the exposed surface to [...]
University of Adelaide research has shown new evidence that dinosaurs were warm-blooded like birds and mammals, not cold-blooded like reptiles as commonly believed.
In a paper published in PLoS ONE, Professor Roger Seymour of the University's School of Earth and Environmental Sciences, argues that cold-blooded dinosaurs would not have had the required muscular power to prey on other
Image by Annie Crawley
Sea urchins are among the best known, most heavily published on, and most "important" of echinoderms. People eat them and they are studied in marine ecology pretty heavily. Most marine biologists I know think highly of sea urchins. They're pleasant animals with an unusual appearance
But the truth is, no matter how adorable or fuzzy, useful and/or cute an animal may
Why did animals with limbs win the race to invade land over those with fins? A new study comparing the forces acting on fins of mudskipper fish and on the forelimbs of tiger salamanders can now be used to analyze early fossils that spanned the water-to-land transition in tetrapod evolution, and further understand their capability to move on land.
Research conducted by Sandy Kawano
drip | david’s really interesting pages... [2013-07-01 19:33:59]
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We don’t have well-identified protected areas, and I’d shoot whatever I could. It was spontaneous. But it gets less joyful when you think about the animals you’re killing. This story, by Jonathan Franzen at National Geographic, physically made me