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  • April 9, 2011
  • 10:32 AM
  • 1,536 views

The Meaning of Mastodon Tusks

by Laelaps in Laelaps


Until recently, I did not fully appreciate fossil teeth. Their significance for identifying species and narrowing down the general diet of extinct animals was obvious, but I didn’t understand that teeth also hold intricate records of an individual animal’s life. Tiny pits and scratches on enamel can reveal what a creature was eating around the [...]... Read more »

  • April 8, 2011
  • 02:02 PM
  • 971 views

Life After Death At Yellowstone: An Interview with Josh Miller

by Andrew Farke in The Open Source Paleontologist

In my last post, I introduced a ground-breaking study recently published in PLoS ONE, that shows how we can infer long-term trends in animal populations just from their bones. This work has big implications for ecology, conservation, and public policy, and is also a really neat piece of science. For this post, I talked to the author of the study, Josh Miller, about his work and some of the tidbits that didn't make it into the paper.Yellowstone NP gets a lot of visitors, and you surely must have ........ Read more »

  • April 8, 2011
  • 10:13 AM
  • 1,024 views

Life After Death at Yellowstone

by Andrew Farke in The Open Source Paleontologist

Taphonomy - the study of what happens to an organism after it dies - is integral to reconstructing the past. Perhaps the most important lessons come in inferring ecological interactions. Did that group of animals live and die together, or were they jumbled long after death? Were all of those shark teeth with the plesiosaur bones from a feeding frenzy, or just a fluke of currents? How closely does a set of fossils represent the relative abundance of the different species in the quarry? Such examp........ Read more »

  • April 5, 2011
  • 05:14 PM
  • 1,359 views

The Last Resting Place of Decuriasuchus

by Laelaps in Laelaps

While making the rounds promoting his new book Boneheads, art dealer and author Richard Polsky stopped by NPR last Sunday to talk about his personal quest to find a Tyrannosaurus rex. The romance of what paleontologist Bob Bakker has called “the big game hunt in Deep Time” drew him in. Having a pet Tyrannosaurus is [...]... Read more »

Brusatte, S.; Benton, M.; Desojo, J.; Langer, M. (2010) The higher-level phylogeny of Archosauria (Tetrapoda: Diapsida) . Journal of Systematic Palaeontology, 8(1), 3-47. info:/10.1080/14772010903537732

  • April 4, 2011
  • 12:38 PM
  • 1,618 views

Is the current plan for seeking evidence of life on Europa on this ice?

by Greg Laden in Greg Laden's Blog

Europa is a moon of Jupiter, the smallest of the four Jovian moons discovered by Galileo in 1610. Juipter has 63 objects circling it that are called moons, though only eight of them are "regular" in their orbit and other characteristics. The rest are bits and pieces of clumped up matter that were probably captured by Jupiter's big-ass gravitational field, and have irregular orbits, i.e., they go the wrong-way around the planet, or are not in the solar plane, etc. Read the rest of this post... ........ Read more »

  • April 1, 2011
  • 12:15 PM
  • 1,465 views

A Tale of Germanic Chieftains and Deep-Sea Corals

by Dr. M in Deep Sea News

Arminius The year is 9CE. Fourteen years later Pliny the Elder will be Pliny the Newly Born. Cai Lun will invent paper one hundred years later.  In Northern Germany a storm unleashes on 30,000 Roman soldiers under the command of Publius Quinctilius Varus.  Varus’s most trusted advisor, Arminius, was the son of a . . . → Read More: A Tale of Germanic Chieftains and Deep-Sea Corals... Read more »

  • April 1, 2011
  • 10:14 AM
  • 1,428 views

A New Giant Tyrant, Zhuchengtyrannus

by Brian Switek in Dinosaur Tracking

“While 2010 was celebrated as the year of ceratopsians by many,” paleontologist Dave Hone wrote at Archosaur Musings yesterday, “it should not be overlooked the huge number of tyrannosaurs that have cropped up in the last year or so.” He’s right. For a long time Albertosaurus, Gorgosaurus, Daspletosaurus, Tarbosaurus and, of course, Tyrannosaurus made up [...]... Read more »

Hone, D.; Wang, K.; Sullivan, C.; Zhao, X.; Chen, S.; Li, D.; Ji, S.; Ji, Q.; Xing, X. (2011) A new tyrannosaurine theropod, Zhuchengtyrannus magnus is named based on a maxilla and dentary . Cretaceous Research. info:/10.1016/j.cretres.2011.03.005

  • March 30, 2011
  • 08:51 PM
  • 1,407 views

South America Gets Two More Sabercats

by Laelaps in Laelaps

How does one go about selling a sabercat skeleton? This was the question the Argentinean naturalist Francisco Javier Muñiz asked Charles Darwin in a letter sent on August 30, 1846.
Almost one year previously, in the pages of the Gaceta Mercantil, Muñiz published a detailed description of a nearly-complete saber-toothed cat skeleton. The article’s title proclaimed [...]... Read more »

  • March 30, 2011
  • 11:09 AM
  • 1,360 views

Watch Out For That Thagomizer!

by Brian Switek in Dinosaur Tracking

Stegosaurus had a formidable tail. Studded with four long spikes, this dinosaur’s business end would have given Allosaurus and other Jurassic predators plenty of incentive to keep moving. But do we have any evidence that Stegosaurus really used its tail this way? Among paleontologists, the four-spiked tail of Stegosaurus is called a “thagomizer.” It is [...]... Read more »

Carpenter, Kenneth; Sanders, Frank; McWhinney, Lorrie A.; and Wood, Lowell. (2005) Evidence for predator-prey relationships: Examples for Allosaurus and Stegosaurus. The Carnivorous Dinosaurs, 325-350. info:/

  • March 28, 2011
  • 04:17 PM
  • 1,279 views

unknowns, uncertainties, and obsolesence

by csoeder in Topologic Oceans

Antiscience campaigns often share the characteristic that they complain about the open questions, anomalies, and experimental limitations inscience. Scientists, on the other hand, work hard to resolve these issues. Creationists complain about uncertainties on the chemical origins of life; biochemists generate and test hypotheses, developing useful technology and techniques in the process. (Bullard et al. [...]... Read more »

  • March 28, 2011
  • 12:00 PM
  • 1,435 views

Tiarajudens: Over 265 Million Years of Sabertooths

by Laelaps in Laelaps

The way people have been talking about Tiarajudens eccentricus, you would think that this 265 million year old cousin of ours was unique among herbivores for having saber-fangs. It was not, but it does raise the question of what makes a saber-tooth in the first place.
Tiarajudens was not quite like any creature alive today. Described [...]... Read more »

  • March 25, 2011
  • 08:40 PM
  • 1,622 views

The Bear Otter

by Laelaps in Laelaps

Folks have been all a-twitter about the giant fossil rabbit found on the Spanish isle of Minorca during the past week, but there was another oversized mammal announced in the same issue of the Journal of Vertebrate Paleontology that has so far gone unnoticed. About the same age as the behemoth bunny, this other giant [...]... Read more »

  • March 25, 2011
  • 10:58 AM
  • 1,220 views

The Tyrannosaur Tooth Toolkit

by Brian Switek in Dinosaur Tracking

When I was in elementary school, I was told that mammals and reptiles could easily be told apart by their teeth. Mammals had a full, enamel-covered toolkit in their mouths—incisors, canines, premolars, and molars suited to different tasks—while reptiles had only one kind of tooth. The dental differences were presented as one of the ways [...]... Read more »

  • March 24, 2011
  • 01:58 PM
  • 1,423 views

Night of the Nuralagus rex

by Laelaps in Laelaps

Giant bunnies are not scary. MGM learned that the hard way with the 1972 schlock film Night of the Lepus. No amount of fake blood or artificial saliva could turn those rabbits into real monsters, and the brief moments when actors in bunny suits attacked their co-stars looked like some kind of “Meet the Easter [...]... Read more »

Quintanaa, J.; Köhler, M.; Moyà-Solà, S. (2011) Nuralagus rex, gen. et sp. nov., an endemic insular giant rabbit from the Neogene of Minorca (Balearic Islands, Spain). Journal of Vertebrate Paleontology, 31(2), 231-240. info:/10.1080/02724634.2011.550367

  • March 22, 2011
  • 10:33 AM
  • 1,304 views

Finding the Family of Acrocanthosaurus

by Brian Switek in Dinosaur Tracking

Allosaurus has one of the dullest names in all of paleontology. The famous dinosaur’s moniker simply means “different reptile”—a bit of a letdown for one of the top predators of Jurassic North America. Early on, the name fit well—Allosaurus was a very unusual dinosaur compared to other large, predatory species—but since 1878 bone hunters have [...]... Read more »

  • March 21, 2011
  • 09:33 PM
  • 2,412 views

From the Editor’s Desk: The Environmental Impacts of Tsunamis

by Dr. M in Deep Sea News

Figure from UNEP: These images show a combination of a rocky, hilly headland along with a small river delta and swampy coastal strip. A low-lying wetland area connects the northern and western ocean fronts. An integration of natural and agricultural ecosystems operating prior to the tsunami combined rice cultivation, and fish/shrimp ponds, alongside natural delta mangrove . . . → Read More: From the Editor’s Desk: The Environmental Impacts of Tsunamis... Read more »

  • March 21, 2011
  • 02:25 PM
  • 1,117 views

Repost: The Pelican’s Beak – Success and Evolutionary Stasis

by Laelaps in Laelaps

I am a relatively infrequent airline traveler, and so packing for distant assignments and trips always presents me with an organizational challenge. Clothes, equipment, and supplies must be tracked down and stuffed into my cheap luggage, with frequent checks of the TSA website to ensure that I can unpack and repack my carry-ons with a [...]... Read more »

  • March 21, 2011
  • 10:47 AM
  • 1,271 views

Oxalaia: Brazil’s New, Giant Spinosaur

by Brian Switek in Dinosaur Tracking

Paleontologists have not found much of Oxalaia quilombensis. A fragment of the snout and a portion of the upper jaw are all that is known of this dinosaur. Even so, those two parts are enough to know that Oxalaia was one of the peculiar predatory dinosaurs known as spinosaurs, and a giant one at that. [...]... Read more »

KELLNER, A.; AZEVEDO, S.; MACHADO, A.; DE CARVALHO, L.; HENRIQUES, D. (2011) A new dinosaur (Theropoda, Spinosauridae) from the Cretaceous (Cenomanian) Alcântara Formation, Cajual Island, Brazil. Anais da Academia Brasileira de Ciências, 83(1), 99-108. info:/

  • March 19, 2011
  • 08:18 AM
  • 1,555 views

Famine and Epidemic Anthrax, Saint-Domingue (Haiti), 1770

by Michelle Ziegler in Contagions

Earthquakes have brought devastation on the Port-au-Prince region many times in the last 300 years. The 1770 earthquake was stronger and relatively as destructive as the 2010 quake (Ker, 2010). It also was centered near Port-au-Prince and to the west of the city.   Ship captain accounts of the earthquake in the Boston Evening-Post from 9 [...]... Read more »

  • March 18, 2011
  • 04:01 PM
  • 9,286 views

Canada Water Week: Climate Change in British Columbia

by Matthew Garcia in Hydro-Logic

In support of Canada Water Week (14 - 22 March) I pledged to Water Canada that I would post an article on the status of hydro-electric projects in the western province of British Columbia (BC), including the potential impacts of climate change on the operation of current facilities and the feasibility of planned projects.  I may range a bit beyond that planned topic, however, with some more ... Read more »

Milly, P., J. Betancourt, M. Falkenmark, R. Hirsch, Z. Kundzewicz, D. Lettenmaier, & R. Stouffer. (2008) Stationarity Is Dead: Whither Water Management?. Science, 319(5863), 573-574. DOI: 10.1126/science.1151915  

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