title: Marshalltown Formation
text: # Marshalltown Formation
  
  The Marshalltown Formation is a Mesozoic geologic formation. Dinosaur remains diagnostic to the genus level are among the fossils that have been recovered from the formation.
  
  Dinosaurs known from the formation:
  
  * Hypsibema crassicauda
  * Hadrosaurus sp.
  * Nodosauridae indet.
  * Dryptosaurus sp.
  * Tyrannosauroidea indet.
  * Dromeosauridae indet.
  * Theropoda indet.
  