ID number: BIRUG: BU724 Institution: The Lapworth Museum of Geology Named collection: Holcroft Collection Definition: Encrinurus variolaris (Brongniart) Object type: Trilobita Place collected: ENGLAND: West Midlands, Dudley Collector: Holcroft Chronostratigraphy: SILURIAN: Wenlock Lithology: Wenlock Limestone Type, figured or cited: Figured