The Nucula Cobboldiae and Tellina obliqua, Figures 119 and 120, before mentioned, are frequent in these beds, as are also littorina littorea, Cardium edule, and Turritella communis, of our seas, proving the littoral origin of the beds.
"The Student's Elements of Geology"
Sir Charles Lyell
I sent them in search of the shell, and they returned bringing me some living specimens of different shells, chiefly littorina and cerithium.
"Sketches of the Natural History of Ceylon"
J. Emerson Tennent