Abbreviated record for specimen 14777 Basic Information Determination: Diplothmema furcatum Brongniart Previously: none Type Status: Figured In: Janssen, 1939, p. 114, fig. 94.Langford, 1963, p. 271, fig. 914 Locality: Will County, Illinois Geologic Unit: Francis Creek Shale Additional Information Images: medium (150 dpi, 62.1KB)large (600 dpi, image not available) Catalog Data: show full record