- GeoRef, Copyright 2004, American Geological Institute. Reference includes data from Bibliography and Index of Geology Exclusive of North America, Geological Society of America, Boulder, CO, United States
Globular bodies occurring in a hornfels of the Dalradian series at Ben Vrackie, Perthshire, central Scotland, seem to be of organic origin. Their form and occurrence are described in detail. Speculation points to their being some type of calcareous algae.