Affiliation:
1. Department of Earth and Environmental Sciences, University of Iowa, Iowa City, IA 52242, USA (e-mail: jonathan-adrain@uiowa.edu)
Abstract
AbstractOrdovician trilobites are reviewed based on a new species-level relational database. The stratigraphical ranges of all 56 families with occurrences in the Ordovician are documented and the content, phylogenetic status, diversity and Ordovician distribution by major palaeocontinent/terrane are discussed. Aspects of higher classification are also dealt with. Global sampling is heavily biased towards a small number of highly sampled areas. Much of the world has a very limited record of formally named trilobite species. Even within heavily sampled units, sampling is patchy by environment and time. Genus endemism was at a peak in Laurentia, Baltic, and Avalonia in the Floian and declined more-or-less steadily through the remainder of the Ordovician.
Publisher
Geological Society of London
Cited by
56 articles.
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