On an Inverted Mass of Upper Cretaceous Strata near Leighton Buzzard, Bedfordshire; and on an Overlap of the Upper Gault in that Neighbourhood

Abstract

WE owe to Mr. Lamplugh a description of the lowest beds of the Gault and their junction with the Lower Greensand, as seen in sand-pits on the south side of Leighton Buzzard. Mr. Lamplugh proved the presence of the fauna of the mammillatus zone and found that the fossils preserved in the gritty phosphatic nodules of the lowest bed above the false-bedded sands include Douvilleiceras mammillatum (Schloth.) and the characteristic Desmoceras usually associated with it.