P. lima is difficult to identify due to its similar morphology to several other Prorocentrum species with a triangular and an oval or ovoid shape (e.g. P. foraminosum, P. concavum and P. hoffmannianum). P. lima can be distinguished by its size, shape, narrow and the presence of valve and marginal .
Raymark Corporation and Asbestos. Raymark Industries were at one time a major parts manufacturer in the automotive industry. For 70 years, Raymark operated from their 33-acre site located in Bountiful, Utah, where they manufactured disk brakes, drum brakes, brake pads, brake linings and adhesives.
A common substitute for asbestos lining is semi-metallic brake linings, which contain metal particles in a bonding agent. These linings are harder and last longer, though they tend to squeak and squeal. Semi-metallic brakes have been available for more than a decade. By the early 1980s, these linings were fully proven.