This Limestone is dominant in many areas of the UK particularly in Birmingham and Anglesy. It is composed of oolites and lithic fragments. Its origins are in extremely deep cold marine conditions of the arctic, and it is a mystery how it eventually came to rest in Birmingham and Anglesy.
^ abcdefghijklmnopqrs Weishampel, David B; et al. (2004). "Dinosaur distribution (Middle Jurassic, Europe)." In: Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. Pp. 538–541. ISBN0-520-24209-2.