Why is the place Nova Scotia considered to be important in the study of ancient reptiles?

 Ancient reptiles were trapped in the hollow stumps of primitive plants called lycopsids. Nova Scotia is home to such hollow lycopsid plants. Three genera or groups of reptiles were trapped in these tree stumps. Take a deep breath and read the names of the three groups – Paeleothyris, Hylonomus, and Protoclepsydrops. This assembly of reptiles was lucky for the scientists. The ancestors of all the primitive reptilian groups were represented in this assembly.