Abbreviated record for specimen 14355 Basic Information Determination: Alethopteris decurrens Artis Previously: none Type Status: Figured In: Janssen, 1939, p. 148, fig. 135Langford, 1958, p. 251, fig. 452 Locality: Will County, Illinois Geologic Unit: Francis Creek Shale Additional Information Images: medium (150 dpi, 107.9KB)large (600 dpi, image not available) Catalog Data: show full record