Dinopedia
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Microhadrosaurus
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An artist's illustration of Microhadrosaurus nanshiungensis
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Sauropsida
clade: Dinosauria
Order: Ornithischia
Suborder: Ornithopoda
Infraorder: Iguanodontia
Superfamily: Hadrosauroidea
Family: Hadrosauridae
Genus: Microhadrosaurus
Dong, 1979
Species: M. nanshiungensis
Binomial name
Microhadrosaurus nanshiungensis
Dong, 1979

Microhadrosaurus (meaning "small sturdy lizard" in Greek) is a genus of duckbill dinosaur from the Campanian or Maastrichtian-age Upper Cretaceous Yuanpu Formation (also known as the Nanxiong Formation) of Guangdong, China. Although its name identifies it as a small duckbill, it is based on juvenile remains, and the size of the adult hadrosaur is unknown.

Description[]

Dong Zhiming named this genus for IVPP V4732, a partial lower jaw from a juvenile hadrosaur. This partial bone, with 18 columns of stacked teeth in a typical hadrosaur tooth battery, measures 37 centimeters long (15 inches). Dong later estimated the length of the individual at 2.6 meters (8.5 feet).

History[]

Dong regarded this genus as much like Edmontosaurus, albeit in tiny form. However, Michael K. Brett-Surman, a hadrosaur specialist, regarded the material as showing no characteristics that would allow it to be differentiated from other duckbills. The most recent review accepts Brett-Surman's position, and regards Microhadrosaurus as a dubious name.

Paleobiology[]

As a hadrosaurid, Microhadrosaurus would have been a bipedal/quadrupedal herbivore, eating plants with a sophisticated skull that permitted a grinding motion analogous to chewing, and was furnished with hundreds of continually-replaced teeth. Because it is only known from a partial jaw from a juvenile, little more than general information can be drawn from it at this point.










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