Highlights of the vertebrate collection include the oldest known terrestrial fauna from the Carboniferous of Joggins, Nova Scotia, the largest collection of invertebrate Ordovician fossils from the Saint Lawrence Lowlands (about 150 000 specimens), and a noteworthy collection of Burgess Shale fossils collected by T.H. Clark in 1924 as well as about 1000 Type and Figured specimens. The Museum also holds all the Dawson type specimens of fossil plants, including the oldest vascular plants from the Devonian of eastern Canada.