Marshalltown Formation
# 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.
