Description: Eocene sand dollar Weisbordella johnsoni found on a spoil island built from dredging a channel out of the Withlacoochee River near Yankeetown, FL. Notice the lack of food grooves leading to the peristome (mouth opening) on the oral side of the test, differentiating it from Neolaganum sp. The petals extend approximately 2/3 of the way to the margin, differentiating it from W. cubae.
Age: Eocene Epoch
Location Found: The Netherlands, Florida, Spoil Islands, mouth of Withlacoochee River, by Yankeetown, FL, Ocala Limestone
Found by: Kathy Patterson
Identified by: Ed DeRouin
References: Cenozoic Echinoids of Eastern United States, Cooke, U.S.G.S. Prof. Paper 321, p. 54 and Plate 20.