Ted Daeschler (IMAGE) Academy of Natural Sciences of Drexel University Caption Dr. Ted Daeschler of The Academy of Natural Sciences in Philadelphia co-led the expedition to the Canadian Arctic that discovered a new species of ancient fish that is a transitional stage between fish and limbed animals. Credit The Academy of Natural Sciences Usage Restrictions Credit must be given to the creator. License CC BY Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.