This picture is of a heteractinid sponge fossil called Astraeospongium meniscus (Römer, 1854). Picture was taken in 2016 at Indiana Univer...

Wilf P, MR Carvalho, MA Gandolfo, NR Cúneo. 2017. Eocene lantern fruits from Gondwanan Patagonia and the early origins of Solanaceae. Scie...

  This image was scanned and Photoshop enhanced from Plate XIX figure 2 in Indiana Department of Geology and Natural Resources Seventeenth A...