Unique triceratops discovery in the USA


This video from the USA is called 1 T-Rex vs Triceratops.

And this video is the sequel.

Paleontologists of the Naturalis Biodiversity Centre in the Netherlands recently tried to find Tyrannosaurus rex fossils in the USA.

It was a bit of a disappointment, as they found only a few foot and leg bones, not a complete T rex skeleton.

Now, however, they have better news.

Translated from NOS TV in the Netherlands:

Wednesday, May 22, 2013, 16:24

In Wyoming in the United States three, possibly four skeletons of triceratops, a dinosaur species, have been found. An excavation team of scientists from Naturalis Biodiversity Center and the American Black Hills Institute made ​​the discovery during an expedition last week.

One of the triceratops skeletons is likely the most full-featured one discovered so far. Triceratops was a herbivore with three horns, living 70 to 65 million years ago in North America and walking on four legs.

According to Naturalis it is exceptional for several triceratops to be found together. “They are also individuals of different ages. This is very exciting. This find will teach us a lot about the development and behavior of triceratops,” said paleontologist Anne Ripper.

The triceratops is one of the best-known dinosaurs. Yet few skeletons have been found. The animal was eaten by the Tyrannosaurus rex, bones and all. Only the skull remained. Of these, in the course of time, hundreds have been found.

Reptiles, amphibians and fire


The Sticky Tongue Project in Canada says about this video:

The Importance of Fire

Wildfires can be devastating to property and lives. But the fact is many of our native habitats are fire-dependent and will eventually burn sooner or later.

“The great outdoors is the foundation of all life on Earth, including yours.”

Episode 14 of a year-long 24 episode education-outreach video series starring Whit Gibbons (Herpetologist and Author), produced in cooperation with The Amphibian and Reptile Conservancy.

This series features “fascinating facts and helpful conservation tips” for everyone “from homeowners to professional land and wildlife managers.”

Fake Italian dragon, pterosaur or dog?


Engravings from Meyer's book of the fake Italian dragon

From World Science:

Killed twice in 1600s, hoax “dragon” slain again—in creationism dispute

May 8, 2013
Special to World Science

A “drag­on” thought to have turned up out­side Rome in the 1600s was killed once, or even twice, in the lo­cal lo­re of its day.

It then lay for­got­ten for three cen­turies—be­fore tak­ing on yet a new life, in the minds of some crea­t­ion­ists who saw in the tale com­pel­ling ev­i­dence for their be­liefs.

Two bi­ol­o­gists from Fay­ette­ville State Uni­vers­ity in North Car­o­li­na have now de­cid­ed to slay the beast once and for all, by do­ing some sleuthing to con­firm what many Ital­ians al­ready sus­pected way back then.

The drag­on was a hoax, they con­clude. Such ex­ist­ence as it had, they add, was based on a forgery com­posed of var­i­ous an­i­mal bones. In that sense it was not too un­like the fa­mous Pilt­down Man, a fake “early hu­man” con­sist­ing of the low­er jaw­bone of an orang­u­tan com­bined with a hu­man skull. That scheme was ex­posed in 1953.

The drag­on sto­ry as trans­mit­ted through old doc­u­ments has de­light­ed some crea­t­ion­ists be­cause they cite the mon­ster—en­grav­ings from the time in­clude a de­tailed skele­tal view—as proof that con­tra­ry to main­stream sci­ence, a fly­ing, rep­til­i­an cous­in of the di­no­saurs lived just re­cent­ly.

But the tale cap­ti­vat­ed Ital­ians long be­fore ar­gu­ments over ev­o­lu­tion. The sto­ry brings us back to about the time when the great sculp­tor-ar­chi­tect Gian Lo­ren­zo Ber­ni­ni re­built the fa­mous square in front of St. Pe­ter’s Ba­sil­i­ca in Rome, erect­ing its cel­e­brat­ed col­on­nade.

A cou­ple of dec­ades af­ter that proj­ect, ru­mors of the drag­on cropped up in con­nec­tion with an­oth­er, less fa­mous con­struc­tion near­by.

Ac­tu­al­ly, one pub­lished ver­sion of the drag­on tale ac­tu­ally dat­ed its “death” to the mid­dle of the St. Pe­ter’s Square proj­ect, in 1660. Yet ma­te­ri­al in an­oth­er book sug­gests that ru­mors of its sight­ing cir­cu­lat­ed about 1691, in the swamps out­side Rome where a di­ke was un­der con­struc­tion. Which­ev­er ver­sion might ac­cu­rately re­flect the “real” ru­mor, the lat­ter book is the one with the en­grav­ings.

This book, by an en­gi­neer in­volved with the di­ke, states that the drag­on was killed and pro­vides three de­light­ful en­graved il­lustra­t­ions. But it says lit­tle else on the sub­ject, ex­cept to men­tion that the beast was “was reco­vered in the hands of the en­gi­neer” him­self, one Cor­ne­li­us Mey­er. The book is mostly about di­ke con­struc­tion proj­ects around Rome.

De­tails on the bi­zarre rep­til­i­an tale are thus fog­gy. But the two bi­ol­o­gists, Pon­danesa D. Wil­kins and Phil Sen­ter, spec­u­late, based on the doc­u­ments, that a drag­on ru­mor be­came an ob­sta­cle to a di­ke con­struc­tion in 1691. Lo­cals or work­ers might have balked at the proj­ect, be­liev­ing a drag­on was on the loose in the ar­ea, per­haps one that was an­gry over the dis­turb­ance of its home. The beast was per­haps viewed as a res­ur­rec­tion of the same mon­ster writ­ten else­where to have died in 1660, al­so in the Rome ar­ea.

In any case, the bi­ol­o­gists pro­pose that Mey­er’s pub­lished “ev­i­dence” of the death in­clud­ing the en­grav­ings might have been part of an effort to fi­nally quell the ru­mors and keep the proj­ect afloat. A pa­per with their findings ap­pears in the May-August is­sue of the on­line re­search jour­nal Pa­lae­on­tolo­gia Elec­tron­ica.

The explanation for the engravings is that “Meyer chose not to invite op­position by ex­press­ing skepticism about the lo­cal rumor,” they argue. “In­stead, he wisely chose to avoid re­sist­ance by hu­moring the lo­cals… em­bracing the lo­cal rumor and pro­viding vi­sual evid­ence that their source of con­cern had been van­quished.”

Wil­kins and Sen­ter ar­gue that some­one likely cob­bled to­geth­er a fake skel­e­ton. This nat­u­rally found its way in­to some of those closely ob­served de­pic­tions for which Ital­ians had such a flair. In one of these en­grav­ings, the ske­l­e­ton ap­pears, prop­erly perched on a charm­ing ba­roque ped­es­tal.

All that re­mained was for Wil­kins and Sen­ter to fig­ure out just what went in­to this “skel­e­ton.” In­ter­est­ingly “the en­grav­ing is de­tailed enough to test” the view that it’s a real pter­o­saur, the re­search­ers wrote.

The con­clu­sions from their analysis are cut­ting.

“The skull of Mey­er’s drag­on is that of a do­mes­tic dog,” they write. “The man­di­ble is that of a sec­ond, smaller do­mes­tic dog. The ‘hindlimb’ is the fore­limb of a bear. The ribs are from a large fish. Os­ten­si­ble skin hides the junc­tions be­tween the parts of dif­fer­ent an­i­mals. The tail is a sculpted fake. The wings are fake and lack di­ag­nos­tic traits of bat wings and pter­o­saur wings. No part of the ske­l­e­ton re­sem­bles its coun­ter­part in pter­o­saurs.”

“This piece of young-Earth crea­t­ion­ist ‘ev­i­dence’ there­fore now joins the ranks of oth­er dis­cred­ited ‘ev­i­dence’ for hu­man-pter­o­saur coex­ist­ence and against the ex­ist­ence of the pas­sage of mil­lions of years,” Wil­kins and Sen­ter add. “Also, a three-century-old hoax is fi­nally un­veiled, the mys­tery of its con­struc­tion is solved, and an in­ter­est­ing and bi­zarre ep­i­sode in Ren­ais­sance Ital­ian histo­ry is elucidat­ed.”

Skep­ti­cism over the drag­on yarn is far from new. The con­tem­po­rary Ger­man au­thor George Kirch­meyer re­counts that the “fly­ing ser­pent” was sup­posedly “killed by a hunt­er af­ter a se­vere and dan­ger­ous strug­gle”; but “this sto­ry, which ap­peared more like some fa­ble than real truth, was a sub­ject of dis­cus­sion among the learn­ed. The cir­cum­stance was de­nied by many, be­lieved by oth­ers, and left in doubt by sev­er­al.”

Two crea­t­ion­ists who have cho­sen to join the be­liev­ers are the au­thors John Go­ertzen and Da­vid Woet­zel, who penned 1998 and 2006 pa­pers on the sub­ject, re­spec­tive­ly.

“This study helps to es­tab­lish the re­cent ex­ist­ence of rham­phorhyn­choid pter­o­saurs; an­i­mals that main­stream sci­ence be­lieves be­came ex­tinct about 140 mil­lion years ago,” Go­ertzen wrote in his pa­per, which ap­peared in the Pro­ceed­ings of the Fourth In­terna­t­ional Con­fer­ence on Crea­t­ion.

Crea­t­ion­ists claim that the Bi­ble proves Earth is only a few thou­sand years old. Thus things like di­no­saurs, which died out 65 mil­lion years ago, pose a prob­lem for crea­t­ion­ists.

Woet­zel did not re­spond to an e­mail sent through his web­site re­quest­ing com­ment.

Go­ertzen could not be lo­cat­ed via e­mail or tel­e­phone, with none of his sev­er­al pa­pers on­line pro­vid­ing con­tact in­forma­t­ion. How­ev­er, his 1998 pa­per on the drag­on ar­gued that the Ital­ian drag­on tale was not the only piece of ev­i­dence for its re­cent ex­ist­ence.

“The re­mark­a­ble thing about this an­i­mal is that it was de­picted in sev­er­al cul­tures of an­ti­qu­ity. Ar­ti­facts iden­ti­fied with this in­ter­est­ing pter­o­saur spe­cies in­clude Roman-Alex­and­rian coins, an Ara­bia-Phil­istia coin, a French wood carv­ing, a Ger­man stat­ue and coin, sev­er­al Mid­dle Ages pic­ture maps, and an en­light­en­ing sketch of a mount­ed an­i­mal in Rome.”

See also here.

Rare New Zealand lizard, new research


Chalky Island or Te Kakahu skink

From Wildlife Extra:

Whole population of Chalky Island skink lives on just 50 x 50 metre area

Rare lizards on Chalky Island

The Chalky Island or Te Kakahu skink (Oligosoma teKakahu) is a small brown speckled skink so far known only in a small 50 x 50 m area on the predator-free Chalky Island in Chalky Inlet.

The Te Kakahu skink is currently classified as ‘nationally critical’ because it is only known to be at one location. It could take just one natural event, such as an earthquake or a single introduced predator, to wipe out the entire population. To ensure the survival of this species, we need to estimate numbers and monitor changes over time to assess whether the population can sustain translocation to other suitable habitats.

In February, New Zealand department of Conservation (DOC) rangers Erina Loe and Hannah Edmonds spent 3 days trapping the skinks on the island using small wire traps baited with canned pear. Each skink is aged, sexed, measured and given an individual number. A total of 160 individual skinks were captured.

These results, coupled with sightings of more skinks in the area, indicate a relatively large population in a small area. There is also more potential habitat above cliffs nearby that were not surveyed.

The next step in the recovery of the Te Kakahu skink is to identify suitable habitat on other predator-free islands and survey them for the presence of any lizards. We may find new populations of Te Kakahu skinks or even other lizard species, or ultimately a suitable habitat to translocate Te Kakahu skinks to, ensuring the survival of these special creatures.

David Attenborough opens wildlife park on rubbish dump


This video from Britain is called Sir David Attenborough opens the new Thurrock Thameside Nature Park.

From the BBC:

Tuesday 14th May 2013

David Attenborough opens wildlife park on rubbish tip

We’re used to seeing wildlife expert David Attenborough doing really exciting things like reporting from the Arctic or the middle of the jungle.

So what if we told you his latest project was a load of old rubbish… literally!

He’s helping to transform former rubbish dumps into beautiful wildlife parks.

Nel went to take a look at one in South East England…

The Thurrock Thameside Nature Park

The Thurrock Thameside Nature Park in Essex lies on top of 50 years of waste from six London boroughs, which has been restored to grasslands, woodland, ponds and reedbeds.

It’s one of the largest restoration projects ever made by the Essex Wildlife Trust, turning what was a rubbish tip into a haven for bees, birds and reptiles.

Sir David, president emeritus of the Wildlife Trusts, said: “This is the beginning of a new chapter in the history of this part of the Thames Estuary.

“The area has had its ups and downs. This wonderful nature area and the extraordinary new centre stand where there were once 230 Saxon dwellings – but in between times the waste of six London boroughs has been brought here.”

Family tree of all snakes and lizards


This video is called The Beauty of Snakes (Animal Planet Documentary).

From George Washington University in the USA:

Biologist Maps the Family Tree of All Known Snake and Lizard Groups

A George Washington University biologist and a team of researchers have created the first large-scale evolutionary family tree for every snake and lizard around the globe.

The findings were recently published in the journal BMC Evolutionary Biology. Alex Pyron, the Robert F. Griggs Assistant Professor of Biology in GW’s Columbian College of Arts and Sciences, along with researchers from the City University of New York and Arizona State University, detail the cataloging of 4,161 species of snakes and lizards, or squamates.

Squamates include all lizards and snakes found throughout the globe, including around 9,500 species on every continent except Antarctica, and found in most oceans,” said Dr. Pyron. “This is everything from cobras to garter snakes to tiny geckos to the Komodo Dragon to the Gila Monster. They range from tiny threadsnakes that can curl up on a dime to 10 feet monitor lizards and 30 foot pythons. They eat everything from ants to wildebeest.”

The evolutionary family tree, or phylogeny, includes all families and subfamilies and most genus and species groups, said Dr. Pyron. While there are gaps on some branches of the tree, the structure of the tree goes a long way toward fully mapping every genus and species group.

“It’s like building an incomplete family tree for your family, but with half of the ‘children’ sampled. You’re in it, but not your brother, one of your cousins is, but not another. However, because it’s so complete, we know where the missing relatives go because there’s no longer as much mystery as to how the missing species, or cousins, are related, with a few notable exceptions for some remaining species.

“This is also a community effort. We sequenced hundreds of these species ourselves but took thousands more from public databases, building on the work of others.”

Understanding how various snakes and lizards are connected to each other fills a major gap in knowledge, said Dr. Pyron, because before this, there were no single reference for how all lizards and snakes were related or what their classification was.

“A phylogeny and taxonomy is fundamental for all fields of biology that use lizards and snakes, to understand how to classify the species being studied, to interpret biological patterns in terms of relatedness, and even at a more basic level, to count how many species are in an area, for example, for conservation management purposes.”

This project has been in the works since 2008 with the last five years being the most intense. It was funded by the National Science Foundation Postdoctoral Research Fellowship in Biological Informatics.

The researchers used DNA sequencing technology to genotype, or identify, the DNA of thousands of lizards and snakes.

“We have laid down the structure of squamate relationships and yet this is still the beginning,” said Dr. Pyron. “As hundreds of new species are described every year from around the glove, this estimate of the squamate tree of life shows us what we do know, and more importantly, what we don’t know, and will hopefully spur even more research on the amazing diversity of lizards and snakes.”

How animals learned to eat plants


Right lateral aspect of the skull of a juvenile specimen of Orobates pabsti. Credit: Dr Amy Henrici, Carnegie Museum, Pittsburgh; Photo permission: Dr Thomas Martens, Stiftung Schloss Friedenstein Gotha, Germany

From the University of Lincoln in England:

Land animals kept fish-like jaws for millions of years

09 May 2013 University of Lincoln

Research has confirmed how early land vertebrates, which evolved from fish, developed weight-bearing limbs and other adaptations long before their feeding systems adjusted to a vegetation-based diet.

Now, for the first time, fossil jaw measurements have demonstrated this gap in evolutionary development.

Scientists from the University of Lincoln (UK), the University of Massachusetts, Amherst, and the University of Oxford (UK), examined the lower jaws of 89 fossils of early tetrapods (four-footed animals) and their fish-like predecessors.

The fossils ranged in age from about 300 to 400 million years old and the team were interested in how the mechanical properties of the jaws of these animals differed through time.

They used 10 biomechanical metrics to describe jaw differences. One of these, called mechanical advantage, measured how much force an animal can transfer to its bite.

Dr Marcello Ruta, from the School of Life Sciences, University of Lincoln, said: “Our study is the first of its kind to address changes in biomechanical properties of the lower jaw across the transition from fish to land vertebrates using a diverse range of extinct species. This work paves the way to in-depth analyses of the rates of evolutionary transformation in other anatomical structures during this major episode in vertebrate history. It also lays the foundations for integrative research that explores themes as diverse as the origin of the first terrestrial food webs, the impact of acquisition of new structures on the diversification of major animal groups, and patterns and processes of functional change.”

So it turns out that just moving into a new environment is not always enough to trigger functional adaptations.

The team discovered that the mechanical properties of tetrapod jaws did not show significant changes in patterns of terrestrial feeding until some 40 to 80 million years after the four-legged creatures initially came out of the water. Until then, tetrapod jaws were still very fish-like, even though their owners had weight-bearing limbs and the ability to walk on land.

In the paper, which has been published in an early online edition of the journal Integrative and Comparative Biology, the authors say the results may be explained by an earlier hypothesis: a shift from gilled to lung breathing in later four-footed animals was necessary before they could adapt their jaw structure to eating plants.

This finding suggests tetrapods may have shown a limited variety of feeding strategies in the early phases of their evolution on land.

Lead author Dr Phil Anderson, from the University of Massachusetts, said: “The basic result was that it took a while for these animals to adapt their jaws for a land-based diet. They stayed essentially fish-like for a long time.”

Dr Matt Friedman, lecturer in palaeobiology at the University of Oxford, said: “The thing that is really interesting is that the diversity of jaw function didn’t really take off until around the origin of amniotes – creatures that lay hard-shelled eggs on land rather than being tied to water for reproduction like fishes and amphibians. It is in amniotes and their closest relatives that we see the first evidence for dedicated herbivory – until that point tetrapods had basically been carnivores. So this means it took at least 50 million years of evolution after the origin of features like limbs, fingers and toes before tetrapods achieved dietary diversity that began to resemble what we see today.”

The statistical methods developed in this work could be used in future studies of more subtle biomechanical patterns in fossil animals that may not be initially clear.

Pachycephalosaur discovery in Canada


Researchers think Acrotholus audeti looked much like this. Image Courtesy: Julius Csotonyi

From Science Fare Media:

New dog-sized pachycephalosaur unearthed in southern Alberta

Small size hints that more similar-sized dinosaurs are still probably waiting to be discovered

Lee Flohr

May 7, 2013

When Roy Audet let researchers scour his ranch for creatures that roamed there roughly 85 million years ago, he didn’t expect them to find the fossil of a new dinosaur with features that he’ll jokingly admit they might share – he didn’t expect it to be named after him either.

But, a team of researchers from Canada and the United States did just that when they found a skull cap belonging to a new species of pachycephalosaur on his southern Alberta ranch in 2008.

“I get lots of jokes because I am a bit hard headed you know,” Audet told SciFare.com.

Formally named Acrotholus audeti, it’s the oldest pachycephalosaur dome found in North America – maybe even the world – it’s roughly two inches thick and sat on the head of a dinosaur that’s about as big as a large dog, but stretched roughly six feet long from tip-to-tip.

“It has a very well developed dome for its geological age,” David Evans, study co-author and curator of vertebrate paleontology at the Royal Ontario Museum in Toronto, told SciFare.com. “The vast majority of dome-headed dinosaurs in the fossil record are basically based on isolated skull caps.”

Fortunately for researchers, they found a less complete dome sitting on their shelf after it was recovered from the same region, more than 50 years ago.

“Even though I had recognized it as being something distinct, it wasn’t until Caleb found the really good specimen in 2008 that we really clinched it,” Evans said. “It’s very well preserved, has a lot of detail and shows how a lot of characteristics of pachycephalosaurs that we thought appeared later in the fossil record, actually occurred earlier.

In order to look dome’s internal structure, researchers used a CT-scanner and found that by the time the dinosaur started walking into the fossil record it had already evolved into one complete unit.

“So, the acquisition of a very tall dome had occurred, at least, by the time of Acrotholus, 85 million years ago,” he added.

The CT-scan also allowed them to determine the dinosaur’s life stage without destroying it – traditional methods require them to slice the bone and dye it – and weighing roughly 100 pounds, it was entirely possible that it belonged to a juvenile.

“We can tell by the density how mature the individuals are,” Evans said. “In this case the dome’s extremely dense and that’s something we only see in the most mature adults.”

Turns out their thick skulls actually have profound consequences for the entire fossil record – their unique head gear may be the only reason we know them at all.

By dinosaur standards, Acrotholus is small. The researchers say that if a mature, small bodied pachycephalosaur exists, small bodied versions of other dinosaurs should exist too – but they don’t.

“Their bones are very small and susceptible to weathering and destruction by predators,” Evans said. “Something about the size of a small dog would be one bite for a predator, and all of those bones would be gone.”

So, if they didn’t end up as hors d’oeuvres, their skeletons were certainly ground up by the sands of time – the planet looked a lot different 85 million years ago.

When the researchers added the new find to the pachycephalosaur family tree, they found Acrotholus’ dome was closely related to a pachycephalosaur from Mongolia, known as Prenocephale.

Fortunately, its skeleton is more complete and researchers were able to use it to generate the image of Acrotholus’ – the turtle in the picture was also found on Audet’s ranch and described by a team that included Evans in 2012.

Eric Snively studies how pachycephalosaurs might have used their thick skulls – he wasn’t part of this discovery though. He told SciFare.com the research is interesting because it shows much there’s still left learn about this time period – known technically as the Santonian – and pachycephalosaur evolution during it.

“They would have split off from their sister group, which are horned dinosaurs like Triceratops and their relatives, many millions of years before we find the first good pachycephalosaur fossils,” Snively, who’s currently a post-doctoral researcher at Ohio University, told SciFare.com.

“There are still a lot of gaps to fill in, but we know that by the time this animal was around they were pretty standard looking pachycephalosaurs,” he added.

He’s also intrigued by the idea that many other small-sized dinosaurs are likely waiting to be discovered – if their existence hasn’t been ground out of the fossil record.

“It’s showing us more evidence that there’s greater diversity of small dinosaurs than we thought,” Snively said.

Evans said his team’s gearing up to head back to Audet’s ranch later this spring so they can hunt for more new and cool fossils. For Audet, it’s just another chance to learn something cool about the creatures that once dominated his ranch, 85-million years ago.

“It’s always fun for me when someone comes along from the scientific community because I can always learn something,” Audet said. “It’s not difficult for me to help ‘em across the river with a canoe or let ‘em park in the yard.”

The new dinosaur was described in the journal, Nature Communications.

Helping amphibians, reptiles in your own backyard


This video from Canada says about itself:

Backyard Wildlife Tips

Here are few quick tips to help you conserve amphibian and reptile populations in your own backyard.

“The great outdoors is the foundation of all life on Earth, including yours.”

Episode 13 of a year-long 24 episode education-outreach video series starring Whit Gibbons (Herpetologist and Author), produced in cooperation with The Amphibian and Reptile Conservancy.

This series features “fascinating facts and helpful conservation tips” for everyone “from homeowners to professional land and wildlife managers.”

Tyrannosaurus rex excavation update


This video from 1 May 2013 is about the Tyrannosaurus rex excavation by the Dutch Naturalis museum in Wyoming, USA.

On 30 April, fossil parts of the feet bones of the extinct Cretaceous dinosaur were discovered.

The team keeps digging, hoping to find more.

This video about the dig is from 30 April.

Blog, in Dutch, about this expedition: here.