Abbreviated record for specimen 14784 Basic Information Determination: Holcospermum Nathorst Previously: none Type Status: Figured In: Janssen, 1939, p. 163-164, fig. 160Langford, 1958, p. 334, fig. 641 Locality: Will County, Illinois Geologic Unit: Francis Creek Shale Additional Information Images: medium (150 dpi, 47.4KB)large (600 dpi, image not available) Catalog Data: show full record