Named By: James Kirkland - 1998
Classification: Chordata, Reptilia, Dinosauria, Ornithischia, Thyreophora, Ankylosauria, Ankylosauridae, Polacanthinae.
Species: G. burgei (type).
Size: 5 meters long.
Known locations: USA, Utah - Cedar Mountain Formation.
Time period: Barremian to Albian of the Cretaceous.
Fossil representation: Almost complete skeleton and skulls.
Gastonia was a low browsing armoured dinosaur,
Polacanthus however it is very well preserved. In
fact Gastonia is the
best preserved member of its group and this has allowed for what are
considered more accurate reconstructions of other lesser known species.
It’s quite possible that one of the main threats to Gastonia was the dromaeosaurid Utahraptor, which was also active at the time and location. The impressive spikes on Gastonia's back would have made it exceedingly difficult for a predator to jump on its side or back. Gastonia may have also used its spiked tail to lash at predators, inflicting deep cuts to their flanks with its tail spines.
Gastonia is named after Robert Gaston, who discovered the remains.
- A polacanthine ankylosaur (Ornithischia: Dinosauria) from the Early Cretaceous (Barremian) of eastern Utah. Lower and Middle Cretaceous Terrestrial Ecosystems (S. G. Lucas, J. I. Kirkland, & J. W. Estep, eds.). - New Mexico Museum of Natural History and Science Bulletin 14:271-281. - J. I. Kirkland - 1998.