Siderite Dubiocoprolite

Twist and Out
Fossil Type: 
Composition: 
Location: 
Mahajanga
Madagascar
MG
Dimensions: 
25 mm dia. x 76 mm long
Weight: 
1 503g

Many attribute siderite formations such as this to turtles. However, because there are no inclusions, it is hard to know if these are really coprolites.  No matter their origins, they really "doo" come in fun shapes.