Checklist for Class Trilobita Walch, 1771 (Trilobites) and region Allegheny (Butler County, Pennsylvania, USA)
List of families for Allegheny (Butler County Pennsylvania) 1 Family width 1 Species
Genera for Allegheny (Butler County Pennsylvania) 1 Genera with 1 Species
Species list for Allegheny (Butler County Pennsylvania) 1 Species
Subnodes of Trilobita with occurrences in Allegheny (Butler County Pennsylvania)
Links, sources and further information Trilobita at ps-19.org Trilobita at trilobites.info Trilobita at westerntrilobites.com Trilobita at gbif.org Trilobita at irmng.org
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