fossils
grrlscientist | May 5, 2010tags: education, public outreach, SciCafe, science cafe, AMNH, American Museum of Natural History, NYC, streaming video
Who: AMNH paleontologists Dr Mike Novacek and Dr Mark NorellWhat: free public presentation for kids of all ages, "Travels with Tyrannosaurus"When: tonight, 5 May at 700pmWhere: Gottesman Hall of Planet Earth, American Museum of Natural History, Enter at the 81st Street (Rose Center) [directions and maps]Cost: FREE, and there is a cash bar too! (must be 21+ with ID to purchase alcohol)
Amazing fossils are still out there, waiting to be discovered. Museum paleontologists…
grrlscientist | May 3, 2010tags: education, public outreach, SciCafe, science cafe, AMNH, American Museum of Natural History, NYC, streaming video
Who: AMNH paleontologists Dr Mike Novacek and Dr Mark NorellWhat: free public presentation, "Travels with Tyrannosaurus"When: Wednesday, 5 May at 700pmWhere: Gottesman Hall of Planet Earth, American Museum of Natural History, Enter at the 81st Street (Rose Center) [directions and maps]Cost: FREE, and there is a cash bar too! (must be 21+ with ID)
Amazing fossils are still out there, waiting to be discovered. Museum paleontologists Mike Novacek and Mark Norell will share…
grrlscientist | April 21, 2010tags: Koprolithen, Senckenberg Naturmuseum, museums, Frankfurt am Main, Germany, travel, fossils, paleontology, image of the day, photography
Koprolithen.
Senckenberg Naturmuseum, Frankfurt am Main, Germany.
Image: GrrlScientist, 13 April 2010 [larger view]
grrlscientist | April 18, 2010tags: Trilobiten Abdruck, Senckenberg Naturmuseum, museums, Frankfurt am Main, Germany, travel, fossils, paleontology, image of the day, photography
Trilobiten Abdruck.
Senckenberg Naturmuseum, Frankfurt am Main, Germany.
Image: GrrlScientist, 13 April 2010 [larger view]
Impressionsby Ryan Jennings
A lifetime can be likened to a lonely beach of sand.
a stranger makes a mark one day, an imprint of a hand.
As time goes by the beach once clear is now a cluttered field
of memories and keep-sakes of the ones that we hold dear.
Time does its best to wash away remembrances of those -
the ones we…
grrlscientist | April 17, 2010tags: Lituites lituus, Senckenberg Naturmuseum, museums, Frankfurt am Main, Germany, travel, fossils, paleontology, image of the day, photography
Lituites lituus.
Senckenberg Naturmuseum, Frankfurt am Main, Germany.
Image: GrrlScientist, 13 April 2010 [larger view]
If you were here today, I would show you this lovely Ordovician fossil shell. The Ordovician Period began with a series of major extinction events that ended the Cambrian Period roughly 488.3 ± 1.7 million years ago, and lasted for about 44.6 million years. Despite a world filled with destruction, death and mass extinctions,…
laelaps | April 14, 2010Off the top of your head, how many female paleontologists can you name?
Hopefully, thanks to the recent publication of The Fossil Hunter and Remarkable Creatures, the brilliant 19th century fossil collector Mary Anning should spring to mind, but it seems to me that women are underrepresented in discussions of paleontology. In books, documentaries, news reports, and other popularizations, male authorities (from Georges Cuvier and William Buckland to Bob Bakker and Jack Horner today) take center stage much more often than women, and this is despite the fact that there are (and have been) many…
awild | April 6, 2010Well. Raising a holy hullabaloo on the internet pays dividends. Vincent Perrichot, one of the authors on the contested PNAS paper, has sent along another aspect of the mystery fossil:
Having trouble? I've arranged a Formica specimen to model the pose:
In the comments below, Vincent provides his perspective:
Well, sounds that the ant nature of our fossil is getting much controversy here! I understand that the photograph provided in our paper is not very clear, so I'd like to clarify things and try to convince everyone. First of all the photograph you are commenting on was published here…
grrlscientist | March 30, 2010tags: evolution, evolutionary biology, UV light, flight, dinosaur, dromaeosaur, theropods, Microraptor gui, paleontology, fossils, birds, researchblogging.org,peer-reviewed research, peer-reviewed paper, journal club
Figure 1. The holotype of Microraptor gui, IVPP V 13352 under normal light. This shows the preserved feathers (white arrow) and the 'halo' around the specimen where they appear to be absent (black arrows). Scale bar at 5 cm. [larger view]
DOI: 10.1371/journal.pone.0009223
It has long been known that when exposed to ultraviolent light, fossilized bones and shells -- and even…
grrlscientist | March 10, 2010tags: evolution, evolutionary biology, ancient DNA, aDNA, molecular biology, molecular ecology, archaeology, paleontology, fossil eggshell, extinct birds, giant moa, Dinornis robustus, elephant birds, Aepyornis maximus, Mullerornis, Thunderbirds, Genyornis, researchblogging.org,peer-reviewed research, peer-reviewed paper, journal club
Elephant bird, Aepyornis maximus, egg
compared to a human hand with a hummingbird egg balanced on a fingertip.
To conduct my avian research, I've isolated and sequenced DNA from a variety of specimens, such as blood, muscle, skin and a variety of internal…
laelaps | February 17, 2010Detail of a Charles R. Knight mural depicting a family a mastodons.Fossils often turn up in unexpected places. As people have dug swimming pools, tilled farms, blasted through mountains, and quarried the land for minerals traces of ancient life sometimes come to the surface, from isolated shark teeth to skeletons of our extinct hominin relatives. Even fossil graveyards are found this way every now and then, like the one found in a southern Pennsylvania quarry a little more than a century ago.
In late April 1907 William Jacob Holland, a paleontologist and director of Pittsburgh's Carnegie…
grrlscientist | February 5, 2010tags: evolutionary biology, paleontology, taphonomy, plumage color, feathers, color, melanin, eumelanin, phaeomelanin, dinosaurs, theropod, paravian, avialae, fossils, Anchiornis huxleyi, ornithology, birds, researchblogging.org,peer-reviewed research, peer-reviewed paper
New research reveals that recently-described 155-million-year-old Anchiornis huxleyi,
a woodpecker-like dinosaur the size of a modern-day domesticated chicken,
had black-and-white spangled wings and a rusty red crown.
Image: Michael DiGiorgio, Yale University [larger view]
Fig. 4. Reconstruction of the plumage color of…
grrlscientist | February 2, 2010tags: science, iPhone Apps, technology, education, dinosaurs, American Museum of Natural History, AMNH, streaming video
Introducing the first official iPhone app from the American Museum of Natural History, DINOSAURS: American Museum of Natural History Collections. This app lets paleontologists of all ages explore the Museum's famous fossil halls in depth.
DINOSAURS: American Museum of Natural History Collections contains more than 800 images from the Museum's archive, woven together to create a striking image of the world's most famous dinosaur, the Tyrannosaurus rex.
Double-tap or pinch to…
grrlscientist | February 1, 2010tags: evolutionary biology, paleontology, fossils, fossilization, fossil forensics, Taphonomy, taxonomy, zoology, deep time, paleoceanography, amphioxus, Branchiostoma lanceolatum, lamprey, Lampetra fluviatilis, chordates, researchblogging.org,peer-reviewed research, peer-reviewed paper
Three rotting Amphioxus heads.
A sequence of images showing how the characteristic features of the body of amphioxus, a close living relative of vertebrates, change during decay. Colours are caused by interference between the experimental equipment and the light illuminating the specimens.
Image: Mark…
grrlscientist | January 30, 2010tags: evolutionary biology, convergent evolution, paleontology, taxonomy, zoology, basal birds, theropods, dinosaurs, ornithology, birds, Alvarezsauroidea, Haplocheirus sollers, Maniraptora, Archaeopteryx, researchblogging.org,peer-reviewed research, peer-reviewed paper
A Newly Discovered Basal Alvarezsauroid Theropod from the Early Late Jurassic.
Artwork: Portia Sloan [larger view]
DOI: 10.1126/science.1182143
A long-standing scientific debate focuses on the origins of birds: did they evolve from reptiles or dinosaurs? Currently, most scientists think that birds are modern dinosaurs, but…
grrlscientist | January 28, 2010tags: evolutionary biology, fossils, feathers, plumage color, color, dinosaurs, theropods, Sinosauropteryx, Sinornithosaurus, birds, Confuciusornis, melanosomes, phaeomelanosomes, eumelanosomes, keratinocytes, SEM, scanning electron microscopy, 10.1038/nature08740, researchblogging.org, peer-reviewed research, peer-reviewed paper
Reconstruction of two Sinosauropteryx, sporting their orange and white striped tails.
Artwork by Chuang Zhao and Lida Xing [larger view]
DOI: 10.1038/nature08740
While looking at museum dioramas that feature dinosaurs, I often overhear people asking "How do they…
pharyngula | January 9, 2010Once again, the Discovery Institute stumbles all over itself to crow victory over evolution, led by the inspiring figure of that squeaking incompetent, Casey Luskin. This time, what has them declaring the bankruptcy of evolution is the discovery of tetrapod trackways in Poland dating back 395 million years. I know, it's peculiar; every time a scientist finds something new and exciting about our evolutionary history, the bozos at the DI rush in to announce that it means the demise of Darwinism. Luskin has become the Baghdad Bob of creationism.
The grounds for this announcement is the bizarre…
pharyngula | January 7, 2010Some stunning fossil trackways have been discovered in Poland. The remarkable thing about them is that they're very old, about 395 million years old, and they are clearly the tracks of tetrapods. Just to put that in perspective, Tiktaalik, probably the most famous specimen illustrating an early stage of the transition to land, is younger at 375 million years, but is more primitive in having less developed, more fin-like limbs. So what we've got is a set of footprints that tell us the actual age of the transition by vertebrates from water to land had to be much, much earlier than was expected…
edyong | January 6, 2010
Around 395 million years ago, a group of four-legged animals strode across a Polish coast. These large, amphibious creatures were among the first invaders of the land, the first animals with true legs that could walk across solid ground. With sprawling gaits and tails held high, they took pioneering footsteps. Their tracks eventually fossilised and their recent discovery yields a big surprise that could rewrite what we know about the invasion of land. These animals were walking around 18 million years earlier than expected.
The evolution of four-legged creatures - tetrapods - is one of the…
awild | January 4, 2010
Paraneuretus (Formicidae:Aneuretinae), photo by ebay seller rmvveta
Here's something unusual for the well-financed collector: Paraneuretus, an extinct genus from a nearly extinct subfamily of ants. This pair of fossilized worker ants is selling on ebay today for over $400. Out of my budget for these sorts of things.
Most amber ants up for auction belong to common extinct species: Azteca, Tapinoma, Camponotus and so forth, usually from the Dominican or Baltic amber deposits and pertaining to extant genera. This is the first aneuretine I've seen.
What's interesting about these ants? Well,…
pharyngula | December 4, 2009Sign this petition to protect a valuable dinosaur trackway quarry in New Jersey — it's going to be bulldozed and built over with condos if you don't. It might even if you do, but make a little effort to bring this deplorable waste of a scientific resource to people's attention, anyway.