The mystery of chordate origins has endured for more than 150 years. Shortly after Darwin's On the Origin of Species, acorn worms were discovered to have chordate-like pharyngeal gill slits 1,2 and to ...
New research undertaken by scientists at the Smithsonian National Museum of Natural History, Royal Ontario Museum (ROM) and University of Montreal, has uncovered fossils of a new species of marine ...
Early Cambrian fossil: Bizarre half-billion-year-old worm with tentacles solves evolutionary mystery
A half-a-billion years old fossil species of marine animal sheds light on how the anatomies of the two main types of an animal group called the hemichordates are related, and provides new evidence in ...
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