Abbreviated record for specimen 15756 Basic Information Determination: unidentified Previously: none Type Status: Figured In: Langford, 1958, p. 105, fig. 196Langford, 1958, p. 106, fig. 199 Locality: Will County, Illinois Geologic Unit: Francis Creek Shale Additional Information Images: medium (150 dpi, image not available)large (600 dpi, image not available) Catalog Data: show full record