Category Archives: Paleontology

Ancient fish Entelognathus primordialis shows roots of modern jaw

Entelognathus primordialis reconstructionIt may be hard to see, but you seem to share a family resemblance with Entelognathus primordialis. The fish, which lived Cheap Jordans Sale 419 million years ago in an area that is now part of China, is the earliest known species wholesale nfl jerseys with a modern jaw.

Entelognathus primordialis is a new addition to the placoderms, a class of armour-plated fishes that lived from about 430 million to 360 million years ago. Like cheap nfl jerseys most vertebrates, including mammals, placoderms had a bony skull and jaw, but most of completed them had simple beak-like jaws built out of bone plates. Palaeontologists have traditionally believed that the fishes’ features bore no relation to ours. (…)

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Lucy, the Australopithecus afarensis, gets a new look

<img class="alignnone size-large wp-image-4407" title="Reconstruction © John Gurche, courtesy of Cleveland Museum of Natural History" alt="Reconstruction © John Gurche, nfl jerseys china courtesy of Cleveland Museum of Natural History” src=”http://www.richardprins.com/wp-content/uploads/2013/09/Image6-646×1024.jpg” width=”604″ height=”957″ srcset=”http://richardprins.com/wp-content/uploads/2013/09/Image6-646×1024.jpg 646w, Cheap Jordans http://richardprins.com/wp-content/uploads/2013/09/Image6-189×300.jpg 189w” sizes=”(max-width: 604px) 100vw, 604px” />

The famous skeleton Wholesale nfl Jerseys Lucy has had a makeover, thanks to oakley womens sunglasses newly discovered fossils. A reconstruction of the 3.2-million-year-old hominin emerged Friday with a trimmer figure, showing off a distinct neck, a Cheap Ray Ban Sunglasses narrower waistline, and arched foot. Earlier reconstructions, relying on scanty fossil rib bones and living African apes such as chimpanzees and gorillas, had videa given her a cone-shaped thorax and potbelly. That implied that her species, Australopithecus afarensis, had retained adaptations for moving in the trees a lot like chimps. But in the past few years, researchers have found additional ribs and a new foot bone of A. afarensis. The ribs are curved, which translates to a barrel-shaped thorax like modern humans, paleoanthropologist Carol Ward of the University of Missouri, Columbia, showed in a symposium on Friday. And the foot bone shows a distinct arch. This suggests that Lucy and her kin spent plenty of time on the ground, although they probably still climbed and slept in trees. The reconstruction, overseen by paleoanthropologist Yohannes Haile-Selassie of the Cleveland Museum of Natural History and created by artist John Gurche, was unveiled Friday as part of an exhibit on human evolution at the museum.

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Evolution: How We Know it Happened & Why it Matters

A Skeptic video on YouTube with Dr. Donald Prothero:

Dr. Donald Prothero

The hottest cultural controversy of 2005 was the Intelligent Design challenge to the theory of evolution, being played out in classrooms and courtrooms across America. The crux of the argument made by proponents of Intelligent Design is that the theory of evolution is in serious trouble. They claim that the evidence for evolution is weak, the gaps in the theory are huge, and that these flaws should be taught to students. In this brilliant synthesis of scientific data and theory, Occidental College geologist, paleontologist, and evolutionary theorist Dr. Donald Prothero will present the best evidence we have that evolution happened, why Darwins theory still matters, and what the real controversies are in evolutionary biology.

Dr. Donald Prothero teaches Physical and Historical Geology, Sedimentary Geology, and Paleontology. His specialties are mammalian paleontology and magnetic stratigraphy of the Cenozoic. His current research focuses on the dating of the climatic changes that occurred between 30 and 40 million years ago, using the technique of magnetic stratigraphy. He is the author of “Evolution of the Earth,” “Bringing Fossils to Life,” “After the Dinosaurs,” “Horns, Tusks, and Flippers: The Evolution of Hoofed Mammals,” and the textbook “Sedimentary Geology.”