Paleontology

Scientists have reported discovery of a new ancient pterosaur species called Caiuajara dobruskii - and the bones of 47 members to go with it. Caiuajara dobruskii lived during the Cretaceous in southern Brazil, according to the paper.

There may be more among the hundreds of bones. The pterosaur bone bed in the interdunal lake deposit of a Cretaceous desert contains at least 47 individuals, with wing spans of between 0.65 and 2.35 meter. Caiuajara dobruskii is the southermost occurrence of the edentulous clade Tapejaridae (Tapejarinae, Pterodactyloidea) recovered so far.


A comparison of Baltic Sea region amber with amber from Asia could be significant - rather than being found just in Mecklenburg, Poland or Belarus, European species have been found almost 10,000 kilometers away in Fushun, even though Europe and Asia were divided by the Strait of Turgay, a wide arm of the ocean, 50 million years ago.  

The pieces from the Baltic region are younger than the ones from Fushun and the assumption has been that this body of saltwater prevented species migrations between the continents.  



Golden coffin: An insect is trapped in Fushun amber. Credit:
(c) Bo Wang / Universität Bonn


Paleontologists have discovered the exquisitely preserved brain in the fossil of one of the world's first known predators that lived in the Lower Cambrian, about 520 million years ago. The discovery revealed a brain that is surprisingly simple and less complex than those known from fossils of some of the animal's prey. 


A new raptorial dinosaur fossil with exceptionally long feathers, including a long feathered tail, has led the authors to believe they were instrumental for decreasing descent speed and assuring safe landings. 

Changyuraptor yangi is a 125-million-year-old dinosaur found in the Liaoning Province of northeastern China. The location has seen a surge of discoveries in feathered dinosaurs over the last decade. The newly discovered, remarkably preserved dinosaur sports a full set of feathers cloaking its entire body, including the extra-long tail feathers.

Much of what we know about Öetzi - the 'Tyrolean Iceman’ – such as what he looked like and that he suffered from lactose intolerance, stems from a tiny bone sample which allowed the decoding of his genetic make-up.

A team of scientists have examined the part of the sample consisting of non-human DNA. In the DNA mixture, they detected a sizeable presence of a particular bacterium: Treponema denticola, an opportunistic pathogen involved in the development of periodontitis. The finding supports the computer tomography based diagnosis that the Iceman suffered from periodontitis.


One of the first predators on land, a 410-million-year-old arachnid, has been virtually brought back to life. Paleontologists used exceptionally preserved fossils from the Natural History Museum in London to create the video showing the most likely walking gait of the animal.

The scientists used the fossils - thin slices of rock showing the animal's cross-section - to deduce the range of motion in the limbs of this ancient, extinct early relative of the spiders. From this, and comparisons to living arachnids, the researchers used the open source computer graphic program  Blender to create a video showing the animals walking.


Paleontologists of Ludwig-Maximilians-Universitaet in Munich studying a new specimen of Archaeopteryx have found previously unknown features of the plumage, which shed light on the original function of feathers and their recruitment for flight. 


Researchers have reported the discovery of 46 ophthalmosaurid ichthyosaurs (marine reptiles)  in the vicinity of the Tyndall Glacier in the Torres del Paine National Park of southern Chile. Among them are numerous articulated and virtually complete skeletons of adults, pregnant females, and juveniles. 

Preservation is excellent and occasionally includes soft tissue and embryos. The skeletons are associated with ammonites, belemnites, inoceramid bivalves, and fishes as well as numerous plant remains.

The enormous concentration of ichthyosaurs is unique for Chile and South America and places the Tyndall locality among the prime fossil Lagerstätten for Early Cretaceous marine reptiles worldwide.


In the never-ending battle between cat and dog owners, one factoid can't be denied: cats are terrible at helping take down big game.

But mammoth kill sites in Europe that containing lots of mammoth bones - up to 86 of the beasts - used for dwellings has led Penn State Professor Emerita Pat Shipman to formulate a new hypothesis of how these sites were formed. 
Shipman
suggests that their abrupt appearance may have been due to early modern humans working with the earliest domestic dogs to kill the now-extinct mammoth. Shipman even believes there is a way to test the predictions of her new hypothesis. 


Where did the earliest Americans come from? 

Speculation has pointed to Eastern Asia, Western Asia, Japan, Beringia and even Europe. Differences in cranial form between today's Native Americans and the earliest known Paleoamericans have lent credence to all possibilities but the analysis of a nearly complete Paleoamerican skeleton with Native American DNA that dates close to the time that people first entered the New World may have some answers to part of the puzzle.