Description: Eocene sand dollar Neolaganum durhami found on a spoil island built from dredging a channel out of the Withlacoochee River near Yankeetown, FL. Notice the pronounced food grooves leading to the peristome (mouth opening) on the oral side of the test, differentiating it from Weisbordella sp.
Age: Eocene Epoch
Location Found: United States, 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. 52 and Plate 21.