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Summary of a Revision of New York State Ordivician Eurypterids: Implications for Eurypterid Paleoecology, Diversity and Evolution

TitleSummary of a Revision of New York State Ordivician Eurypterids: Implications for Eurypterid Paleoecology, Diversity and Evolution
Publication TypeJournal Article
Year of Publication2004
AuthorsTollerton, Jr., VP, ,
JournalTransactions of the Royal Society of Edinburgh: Earth Sciences
Volume94
Pagination235-242
KeywordsArthropoda, Chelicerata, distribution, Early Silurian
Abstract

The record of Ordovician Eurypterida from New York State, USA, is shown to be largely false. Twenty-nine species in 17 genera are here recognised as pseudofossils, reducing by more than 75% the total number of named Ordovician eurypterid taxa. Consequently, 10 families now have their first occurrence either later in the Ordovician or in the Early Silurian. The implications for eurypterid palaeoecology, diversity and evolution are not as straightforward as would be expected from such a drastic taxonomic revision. All Ordovician eurypterids are now known to occur in shallow-water, near-shore shales or fine-grained carbonates. Diversity measures indicate that the end-Ordovician extinction event appears to have had less effect on eurypterids than previously known, and their turnover is level in the Ordovician.

URLhttp://dx.doi.org/10.1017/S026359330000064X
DOI10.1017/S026359330000064X