tongrian

Updated: May 5, 2025

Baron von Konen has pointed out that no less than forty-six out of the fifty- nine Brockenhurst shells, or a proportion of 78 per cent, agree with species occurring in Dumont's Lower Tongrian formation in Belgium. It is possible that the Tongrian of Dumont may be newer than the Bembridge series, and therefore referable to the Lower Miocene.

Sir Charles Lyell - The Student's Elements of Geology