Blake, J. F. (1880). On the Portland rocks of England. <em>The Quarterly Journal of the Geological Society of London.</em> 36: 189-236; plates VIII-X., available online athttps://www.biodiversitylibrary.org/page/36090532 page(s): 230; plate IX, fig. 4 [details]
original descriptionBlake, J. F. (1880). On the Portland rocks of England. <em>The Quarterly Journal of the Geological Society of London.</em> 36: 189-236; plates VIII-X., available online athttps://www.biodiversitylibrary.org/page/36090532 page(s): 230; plate IX, fig. 4 [details]
This service is powered by LifeWatch Belgium Learn more»