Paleontology news

"Blindsnakes are not very pretty, are rarely noticed, and are often mistaken for earthworms," admits Blair Hedges, professor of biology at Penn State University. "Nonetheless, they tell a very interesting evolutionary story." Hedges and Nicolas Vidal, of the Muséum National d'Histoire Naturelle in Paris, are co-leaders of the team that discovered that blindsnakes are one of the few groups of organisms that inhabited Madagascar when it broke from India about 100 million years ago and are still living today. The results of their study will be published in the 31 March 2010 issue of the Royal Society journal Biology Letters. Blindsnakes comprise about 260 different species and form the largest group of the world's worm-like snakes -- scolecophidians. These burrowing animals typically are found in southern continents and tropical islands, but occur on all continents except Antarctica. They have reduced vision -- which is why they are called "blind" -- and they feed on social insects including termites and ants. Because there are almost no known fossil blindsnakes, their evolution has been difficult to piece together. Also, because of their underground lifestyle, scientists have long wondered how they managed to spread from continent to continent.

A large red granite false door from the tomb of an ancient queen's powerful vizier has been discovered in Luxor, Egypt's culture minister said on Monday.

Scientists from Cambridge, London and Melbourne have found the first ever evidence that tyrannosaur dinosaurs existed in the southern continents. They identified a hip bone found at Dinosaur Cove in Victoria, Australia as belonging to an ancestor of Tyrannosaurus rex. The find sheds new light on the evolutionary history of this group of dinosaurs. It also raises the crucial question of why it was only in the north that tyrannosaurs evolved into the giant predators like T. rex.

In the '80s, Spanish researchers found the first fossils of Cloudina in Spain, a small fossil of tubular appearance and one of the first animals that developed an external skeleton between 550 and 543 million years ago. Now palaeontologists from the University of Extremadura have discovered a new species, Cloudina carinata, the fossil of which has preserved its tridimensional shape. "Cloudina carinata is characterised by its elaborate ornamentation and complexity of the shells and tube that are formed when inserted", Iván Cortijo, main author and researcher in the Area of Palaeontology at the University of Extremadura, describes to SINC.

In the latest use of DNA to investigate the story of humankind, scientists have decoded genetic material from an unidentified human ancestor that lived in Siberia and concluded it might be a new member of the human family tree.

A new species of dinosaur has emerged from the rocks of southern Utah.

The ancient stone spheres of Costa Rica were made world-famous by the opening sequence of "Raiders of the Lost Ark," when a mockup of one of the mysterious relics nearly crushed Indiana Jones. So perhaps John Hoopes is the closest thing at the University of Kansas to the movie action hero.

A new species of dinosaur, a relative of the famous Velociraptor, has been discovered in Inner Mongolia by two PhD students. The exceptionally well preserved dinosaur, named Linheraptor exquisitus, is the first near complete skeleton of its kind to be found in the Gobi desert since 1972, and will help scientists work out the appearance of other closely related dinosaur species.

Jennifer Smith, PhD, associate professor of earth and planetary sciences in Arts & Sciences at Washington University in St. Louis, was belly crawling her way to the end of a long, narrow tunnel carved in the rock at a desert oasis by Egyptians who lived in the time of the pharaohs. "I was crawling along when suddenly I felt stabbed in the chest," she says. "I looked down and saw that I was pressing against the broken end of a long bone. That freaked me out because at first I thought I was crawling over bodies, but I looked up and saw a sheep skull not too far away, so I calmed down. At least the bones weren't human."

Scientists have unearthed the remains of one of the Worlds rarest fossils - in downtown Ottawa. The 450 million year old fossil preserves the complete skeleton of a plumulitid machaeridian, one of only 8 such specimens known. Plumulitids were annelid worms - the group including earthworms, bristleworms and leeches, today found everywhere from the deepest sea to the soil in your yard - and although plumulitids were small they reveal important evidence of how this major group of organisms evolved. "Such significant new fossils are generally discovered in remote or little studied areas of the globe, requiring difficult journeys and a bit of adventure to reach them" notes Jakob Vinther of Yale University, lead author of the paper describing the specimen. "Not this one though. It was found in a place that has an address rather than map co-ordinates!"

From the time of the Crusades to the modern day, war refugees have struggled to integrate into their new communities. They are often economically impoverished and socially isolated, which results in increased conflict, systematic violence and warfare, within and between communities as the new immigrants interact with and compete with the previously established inhabitants. Now, University of Missouri researcher Todd VanPool believes pottery found throughout the North American Southwest comes from a religion of peace-seeking women in the violent, 13th-century American Southwest. These women sought to find a way to integrate newly immigrating refugees and prevent the spread of warfare that decimated communities to the north. First discovered in 1930's Arizona, Salado pottery created a debate among archaeologists. According to VanPool, the Salado tradition is a grassroots movement against violence. The mystery of the pottery's origin and significance was known as "the Salado problem." This southwestern pottery was found among three major cultural areas of the ancient southwest: the ancestral Puebloan in northern Arizona and New Mexico, the Mogollon of southern New Mexico and the Hohokam of central and southern Arizona, all with different religious traditions. Even though the pottery was found in three different cultural areas, the pottery communicated the same, specific set of religious messages. It was buried with both the elite and non-elite and painted with complex, geometric motifs and animals, such as horned serpents. Instead of celebrating local elites, the symbols in Salado pottery emphasized fertility and cooperation.

Scientists estimate that nearly half the living material on our planet is hidden in or beneath the ocean or in rocks, soil, tree roots, mines, oil wells, lakes and aquifers on the continents.

Has another mystery in the history of Israel been solved? Prof. Gershon Galil of the Department of Bible Studies at the University of Haifa has identified Khirbet Qeiyafa as "Neta'im", which is mentioned in the book of Chronicles. "The inhabitants of Neta'im were potters who worked in the king's service and inhabited an important administrative center near the border with the Philistines," explains Prof. Galil. Khirbet Qeiyafa is a provincial town in the Elah Valley region. Archaeological excavations carried out at Khirbet Qeiyafa by a team headed by Prof. Yosef Garfinkel and Mr. Saar Ganor have dated the site to the beginning of the 10th century BCE, namely the time of King David's rule. A Hebrew inscription on a pottery shard found at the site, also dating back to the 10th century, has recently been deciphered by Prof. Galil and indicates the presence of scribes and a high level of culture in the town.

Until now, paleontologists have generally believed that the closest relatives of dinosaurs possibly looked a little smaller in size, walked on two legs and were carnivorous. However, a research team including Randall Irmis, curator of paleontology at the Utah Museum of Natural History and assistant professor in the Department of Geology and Geophysics at the University of Utah has made a recent discovery to dispel this hypothesis. The team announced the discovery of a proto-dinosaur (dinosaur-like animal) — a new species called Asilisaurus kongwe (a-SEE-lee-SOAR-us KONG-way), derived from asili (Swahili for ancestor or foundation), sauros (Greek for lizard), and kongwe (Swahili for ancient). The first bones of Asilisaurus were discovered in 2007, and it is the first proto-dinosaur recovered from the Triassic Period in Africa. Asilisaurus shares many characteristics with dinosaurs but falls just outside of the dinosaur family tree—living approximately 10 million years earlier than the oldest known dinosaurs.

Scripps Institution of Oceanography, UC San Diego, paleoceanographer Richard Norris is one of 41 scientists presenting evidence that an asteroid impact really did kill off dinosaurs and myriad other organisms 30 years after the theory was first proposed. The researchers are authors of a review paper being released Friday in the journal Science that represents a new salvo in an ongoing controversy over the cause of the mass extinction. Norris' contribution to the paper was evidence in seafloor sediment records that indicate how deep-sea life was profoundly reshaped by the impact.

Paleontologists announced the discovery of a dinosaur-like animal—one that shared many characteristics with dinosaurs but fell just outside of the dinosaur family tree—living 10 million years earlier than the oldest known dinosaurs. The researchers conclude that dinosaurs and other close relatives such as pterosaurs (flying reptiles) might have also lived much earlier than previously thought. The description of the new species Asilisaurus kongwe (a-SEE-lee- SOAR-us KONG-way) appears in the March 4 issue of the journal Nature in a paper lead-authored by Sterling Nesbitt, a postdoctoral researcher at The University of Texas at Austin's Jackson School of Geosciences. Nesbitt conducted the research with his colleagues while a graduate student at Columbia University's Lamont-Doherty Earth Observatory and the American Museum of Natural History.

A fossil that was celebrated last year as a possible "missing link" between humans and early primates is actually a forebearer of modern-day lemurs and lorises, according to two papers by scientists at The University of Texas at Austin, Duke University and the University of Chicago. In an article now available online in the Journal of Human Evolution, four scientists present evidence that the 47-million-year-old Darwinius masillae is not a haplorhine primate like humans, apes and monkeys, as the 2009 research claimed.

Sixty-seven million years ago, when dinosaur hatchlings first scrambled out of their eggs, their first—and last—glimpse of the world might have been the open jaws of a 3.5-metre-long snake named Sanajeh indicus, based on the discovery in India of a nearly complete fossilized skeleton of a primitive snake coiled inside a dinosaur nest. The snake lacked the wide-jawed gape seen in modern snakes such as pythons and boas, which would have prohibited it from eating rigid dinosaur eggs. But baby dinosaurs would have been just the right prey size for a large snake, says Jason Head, a paleontologist and assistant professor in the Department of Biology at the University of Toronto Mississauga.