Published online by Cambridge University Press: 17 July 2017
The effects of sampling the fossil record are much greater then one would intuitively expect because most species are rare. That is, most species are represented by extremely few specimens and occur in extremely few collections. In many studies, species which occur only once are considered to be either endemic, stenotopic or of short species duration when in fact these species may not have any of these characteristics but, in fact, are very rare and thus occur in the fossil record very infrequently.