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Field sampling bias, museum collections and completeness of the fossilrecord
Hunter, A.W.; Donovan, S.K. (2005). Field sampling bias, museum collections and completeness of the fossilrecord. Lethaia 38(4): 305-314. dx.doi.org/10.1080/00241160500289559
In: Lethaia. WILEY-BLACKWELL PUBLISHING, INC: Oslo. ISSN 0024-1164, more
Peer reviewed article  

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Keyword
Author keywords
    echinoderms; fossil record; museums; sampling; Upper Cretaceous

Authors  Top 
  • Hunter, A.W.
  • Donovan, S.K.

Abstract
    Museum specimens, particularly old collections, typically lack comprehensive field data and determination of substrate, sampling biases, etc., is problematic. Diversity at the generic level of all identifiable latest Cretaceous (Campanian-Maastrichtian) echinoderm remains in major museum collections from the Mons (southern Belgium) and Danish (Jylland (Jutland) and Sjaelland (Zealand)) basins were compared to those of the Liege-Limburg Basin. The last-named has been studied in detail, including microscopical analysis of ossicles picked from bulk samples. Echinoids of the Mons Basin show similarities to those of the Liege-Limburg Basin, but crinoids, asteroids and ophiuroids remain poorly known from the former. Echinoderms of the Danish Basin resemble those of similar chalk lithofacies in the Liege-Limburg Basin, despite significant geographical separation. These disparities can be explained, at least in part, by collector bias in sampling methodology, although differences in substrate presumably also had an influence.

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