Tag Archives: Evolution

A new extraordinary site full of fossils has been found in Canada

The Burgess Shale is an area in Canada very well known in the world of paleontology because it represents an extraordinary reservoir of fossils from the Middle Cambrian, which is about five hundred million years ago. In 2012, in Kootenay National Park, about 40 km from the original site, a new deposit of fossils was discovered described in a paper just published in the journal “Nature Communications”.
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The fossils of Tiktaalik roseae show the evolution from fins to feet

A team of paleontologists led by Professor Neil Shubin from the University of Chicago published in the journal “Proceedings of the National Academy of Sciences” the results of a research on Tiktaalik roseae. It’s a species that lived during the Devonian period, about 375 million years ago, which is a transitional form between fish and legged animals. This research highlights the adaptation of the hind fins of this animal, showing that it had already started in fish.
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The sequencing of the Amborella DNA solves the mystery of the evolution of flowering plants

The sequencing of the genome of the amborella trichopoda (photo ©Scott Zona) helped solve the mystery of the appearance of flowering plants during the Cretaceous. Charles Darwin called it an abominable mystery due to the difficulty of understanding how plants evolved to result in the birth of the flowers. The Amborella Genome Project, which also published online the DNA sequences of this plant, has uncovered a horizontal gene transfer from other organisms.
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The DNA of hominids who lived 400,000 years ago contains interesting surprises

A team of scientists led by Dr. Svante Pääbo of the Max Planck Institute for Evolutionary Anthropology in Leipzig, Germany, has almost completely sequenced the mitochondrial DNA taken from a femur of a hominid who lived about 400,000 years ago. It’s the oldest hominid DNA sequenced so far and gave unexpected results, revealing a genetic connection with the Denisova, a population of hominids still poorly known.
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The DNA of a coelacanth, the most famous living fossil, has been sequenced

An international team coordinated by the Broad Institute, a research center affiliated with the Massachusetts Institute of Technology (MIT) and Harvard University, announced they have completed the sequencing of the genome of a coelacanth, a fish that was thought to be extinct until 1938, when a living specimen was found. Continue reading

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A skeleton of Australopithecus sediba has been reconstructed

A team of scientists has reconstructed a skeleton of Australopithecus sediba, a hominid that lived about two million years ago, putting together the bones of some partial skeletons found in 2008 in Malapa, about 45 km (about 30 miles) from the capital city of South Africa, Johannesburg. Continue reading

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