Geosciences final Colloquium Speaker for the semester is Dr. Ted Daeschler, Associate Professor, Department of Biodiversity, Earth and Environmental Science at Drexel University. His talk on Tuesday, April 22nd, at 4 PM in 022 Deike is entitled "Great Steps in the History of Life: The Origin of Limbed Vertebrates." A pre-talk Speaker Reception will be held at 3:45 PM in the EMS Museum. All are welcome.
Dr. Daeschler received his Ph.D in Geology from the University of Pennsylvania and, in addition to his academic position, is also the Associate Curator of Vertebrate Zoology at Drexel's Academy of Natural Sciences. In 2004, Dr. Daeschler, along with Neil Shubin of the University of Chicago, the late Farish Jenkins of Harvard University, and other colleagues, discovered an example of the evolutionary transition between finned and limbed animals: Tiktaalik roseae, a 375 million year-old fossil lobe-finned fish with many features only seen in tetrapods (limbed animals). Their discovery has attracted attention from the paleontology community, documentary filmmakers, textbook publishers, teachers, and even medical professionals who believe Tiktaalik reveals important information about the history of life, including human. PBS airs a documentary in this month on the discovery. Dr. Daeschler was also a recent guest on the Colbert Show.