Definition: A list (concatenated and separated) of nomenclatural types (type status, typified scientific name, publication) applied to the subject.
Comment: The recommended best practice is to separate the values with a vertical bar (' | '). Examples: "holotype of Ctenomys sociabilis. Pearson O. P., and M. I. Christie. 1985. Historia Natural, 5(37):388", "holotype of Pinus abies | holotype of Picea abies". For discussion see http://terms.tdwg.org/wiki/dwc:typeStatus
Definition: superposition compound eyes where each ommatidium is equipped with a lens cylinder arrangement, producing the equivalent of a pair of lenses, with the first lens producing a small image halfway down the structure and the second lens turning the image back into a parallel beam. In the process the ray direction is reversed. Thus, the emerging beam is on the same side of the axis as the entering beam—the condition for obtaining a superposition image from the whole array.