Finely laminated sands and clays, with thin layer of lignite, and shells of Cyclas and Valvata, and with mytilus in some beds.
"The Antiquity of Man"
Charles Lyell
And now, after an interval of centuries, during which the lagoon contained no salt-water shell fish, it again produces great numbers of mytilus edulis.
"The Earth as Modified by Human Action"
George P. Marsh
It is in reality a bivalve of the Linnaean genus of mytilus, and the species of Crista Galli; called by Lister, Rastellum; by Rumphius, Ostreum plicatum minus; by D'Argenville, Auris Porci, s.
"The-Natural-History-of-Selborne"
White, Gilbert