paleontology
laelaps | November 1, 2007I still am a bit disappointed that I had to miss SVP this year, but fellow paleo-blogger Amanda has suggested that everyone who wants to attend the 2008 meeting put a little progress bar on their blog to remind themselves to start saving up for the trip (you can make your own using this word cash meter). I'm setting mine at $1,500, and although registration is only a fraction of this amount, I'm going to need to save a lot for gas, hotels, food, extra activities, the money I won't be making since I'll have to take off from work, and the armful of books I'm sure to come home with. Indeed, I'm…
laelaps | October 31, 2007Funding is a difficult thing to obtain, but if you're a paleontologist with a published paper Paleonturology '07 is still accepting submissions. Dr. Vector, last year's winner for his paper "Postcranial Skeletal Pneumaticity in Sauropods and Its Implications for Mass Estimates," tipped me off about this one, and the entry requirements are very easy to meet. Anyone can enter this, student or professional, no matter what area of paleontology you're involved in, so if you've got something published in 2006 (or even know of a paper that you feel should be entered) be sure to act fast as the…
grrlscientist | October 31, 2007
A fossilized brown hyena, Hyaena brunnea,
which lived in Europe 1.8 million years ago. [Larger view].
An amazing fossil find in the Andalusian savannah in southeast Spain has revealed that a large variety of animal species lived together in that region during the boundary between the Pliocene and Pleistocene epochs, 1.8 million years ago. This discovery has so far yielded a remarkable somorgasbord of fossilized remains from at least 24 large mammal species, eight small mammal species, two reptile species and one bird species.
The fossilized remains, found at Fonelas, Spain, were from…
laelaps | October 30, 2007
The sculpted skull of the AMNH Deinonychus mount.
For nearly as long as I can remember, artistic depictions of Deinonychus and related dromeosaurs have featured the dinosaur as a pack hunter, often pouncing on a hapless ornithischian like Tenontosaurus (see here, here, here, and here for examples). After being confronted with such imagery time and time again I didn't think twice about the pack-hunting behavior in Deinonychus as a kid, but I started to wonder on what evidence all these gory illustrations were based. The popular books in my own library treated the behavior as a fact and gave…
laelaps | October 26, 2007Just a quick reminder that the next exhibition of The Boneyard will be going up tomorrow at the Hairy Museum of Natural History, so be sure to get all your paleo (or palaeo, if you prefer) oriented links to me or Matt soon! If you need some inspiration check out Matt's fantastic artwork and discussion on phytosaurs, a group that often doesn't get the attention it deserves.
There's some good opportunities for some cross-over posts coming up as well, as the next edition of The Accretionary Wedge is fast approaching, and it's host (Kevin Z of The Other 95%) has asked for submissions about "…
laelaps | October 26, 2007
Yesterday my friend Julia commented that one of the best times to visit a museum is in the late afternoon during the winter, and these two photographs will give you some idea why. While the fourth floor of the AMNH is usually bathed in natural lighting during most of the day and artificial lighting from above during the evening, there's a few minutes during the winter months while the sun is getting low in the sky but the overhead illumination hasn't come on yet, a time when shadows sweep across the ancient bones. These two photographs of the "Bear Dog" Amphicyon were taken during that short…
laelaps | October 25, 2007I have to admit that I've been somewhat lazy when it has come to sharing my thoughts on my current reading material since I moved to ScienceBlogs. On Laelaps Mk. 1 I would usually update every few days on what I was reading and what I thought about it, but since I've started writing here I've completed several books and haven't said very much about any of them. While this post is not going to be a massive offloading of knowledge gained from my extracurricular reading, it might at least offer up some suggestions for those looking for some new reading material;
The Horned Dinosaurs by Peter…
laelaps | October 23, 2007
Regardless of whether it was gradual or happened in a geologic instant, non-avian dinosaurs went extinct by approximately 65 million years ago, but the question of what they might be like today had they survived makes for some entertaining fiction. Most of such imaginary works are set on isolated islands or plateaus, "Lost Worlds" that have provided a refuge for dinosaurs (the most spectacular and enjoyable example being Weta Workshop's companion book to Peter Jackson's remake of King Kong entitled The World of Kong). Still, many of the dinosaurian hideaways do not take evolution into…
laelaps | October 22, 2007Unfortunately, I didn't get to attend to the annual SVP Meeting in Austin, TX this year, and I can hardly wait to hear about all the interesting talks and papers from those who attended. My curiosity as to the proceedings has been mildly sated, however, by a news report about one of the interesting discoveries announced at the convention; a mid-Triassic (225 Ma) track found near Melbourne, Australia that has been attributed to a theropod dinosaur.
The 14cm-long tracks seem to indicate the presence of a theropod (or, as Zach has pointed out, some as-yet-unknown bipedal crurotarsian) that stood…
laelaps | October 19, 2007
The intimidating skull of Prestosuchus, taken at the AMNH.
I've been trying for quite some time now to get some information about a predatory member of the Order Rauisuchia, Prestosuchus chiniquensis so that I could write something substantial about it, but most of the references I've been able to get a hold of only mention it in reference to similar animals (i.e. Postosuchus, Saurosuchus, etc.). If anyone has any papers or technical literature they could send me on this animal (my e-mail can be found via the "contact" tab on this blog), I would be more grateful.
clock | October 6, 2007OK, I live here, yet I had to learn from Brian that the AMNH dinosaur exhibit is coming to the North Carolina Museum of Natural Sciences in downtown Raleigh. The exhibit will be open from October 26, 2007 till March 2, 2008 and I will make sure to go and see it while it is in town (and take pictures if they'll let me and then blog about it). If you come from out of town to see the exhibit, don't forget to also see the dinos that are on permanent display at the Museum: the Acrocanthosaurus (the only skeleton of its kind displayed anywhere - and it is not a cast either but the real thing) and…
grrlscientist | October 6, 20071842 THE BIRTHDAY OF BEER! Lager Beer is perfected in the city of Pilsen, you know, as in Pilsner Beer. Beer was made by the Egyptians and Sumerians and traced back to the Ice Age, but our concept of beer requiring an advancement in refrigeration is Pilsner or Lager.
1905 The initial description of Tyrannosaurus rex, its junior synonym Dynamosaurus imperiosus, and Albertosaurus sarcophagus was published. Albertosaurus remains a valid genus name of a related but smaller tyrannosaurid.
grrlscientist | October 2, 2007tags: blog carnivals, The Boneyard, paleontology
The sixth edition of the Boneyard is now available for you to read. This blog carnival focuses on paleontology and fossils, so there's plenty there for you dinosaur fans to enjoy.
grrlscientist | September 24, 2007tags: researchblogging.org, social behavior, evolution, Psittacosaurus, ornithischian dinosaur
Triceratops.
Image: Dinosaur Collector
Triceratops are among the most recognizable dinosaurs because of their distinct appearance. They had a large and elaborate bony shield around the back of their head, horns that jut out from the top of their head and nose like spears, and bony knobs on their cheeks. Because these large structures are energetically expensive to grow, they had to serve a purpose and this purpose was likely the establishment of social hierarchies. Thus, these ornaments provide…
grrlscientist | September 24, 2007tags: researchblogging.org, velociraptor, Dromaeosauridae, dinosaur, feathers, paleontology, evolution
Velociraptor skull.
Velociraptors were small dinosaurs, weighing only about 15kg and approximnately 1.5m long.
Image: M. Elison, AMNH. [larger view]
According to a research paper that was published late last week, the Velociraptor probably had feathers. A closer look at a fossil Velociraptor ulna (forearm) that was found in Mongolia in 1998 revealed a series of small bumps along its length. These bumps are known as "quill knobs" because they are found in most modern birds where they…
clock | August 7, 2007It's like letting a kid into a candy store. John McKay, whose favourite blogging topic is the study of extinct pachyderms, finally got to go on a dig. And, as one could expect, his account of it is as excited and as well-informed and detailed as one can expect from him. The Obligatory Reading of the Day.
grrlscientist | July 24, 2007tags: mastodon fossils, Greece
AMNH 9951, skeleton of the American mastodont, Mammut americanum, Newburgh, NY.
Image: AMNH (American Museum of Natural History, NYC, NY) [larger]
In an astonishing discovery, a three million year old "fossilized zoo" was discovered by Greek geologists yesterday in the northern Milia region near the town of Grevena. This "zoo" contains the fossilized remains of prehistoric rhinos, mastodons, gazelles and carnivorous mammals.
The discovery included a pair of tusks from a mastodon (pictured left. Image: Evangelia Tsoukala), an ancient species of elephant that…
grrlscientist | July 21, 2007tags: Boneyard, paleontology,blog carnival
Hey everyone, there's a new blog carnival being published out there -- it was a surprise to me, too -- but you have to check it out because it focuses on one of my most favorite topics; paleontology! The first edition of The Boneyard is now available for you to enjoy.
voltagegate | July 13, 2007So far we have established that spiders are distinct from insects for two reasons: physiology (mouth parts, body plan, respiratory structures) and more importantly, evolutionary history (or phylogeny, as scientists call it).
But where did spider's come from? How did they come to speciate ?
The answer, like many in invertebrate paleontology, is cloudy. Organisms without hard, thick shells rarely become fossilized. In fact, for any organism's parts to become fossilized, even vertebrates, is a profound rarity, as Bill Bryson illustrates in A Short History of Nearly Everything:
Only about one…