One of the most popular dinosaurs of all time, the Stegosaurus is quite distinctive with its row of large bony plates along its back, and the four fearsome spikes on its tail. These spikes are believed to have been used to protect Stegosaurus from attackin
One of the most popular dinosaurs of all time, the Stegosaurus is quite distinctive with its row of large bony plates along its back, and the four fearsome spikes on its tail. These spikes are believed to have been used to protect Stegosaurus from attacking Jurassic predators such as Allosaurus.
History:
Stegosaurus was discovered and described in 1877 by Othniel Charles Marsh. Originally, its plates were thought to lay flat on the dinosaurs back, like a turtles shell. Later, more complete findings showed that they stood up vertically on Stegosauruss back, though their exact arrangement is still something of a mystery. Though sometimes shown in a symmetrical double row, the most widely accepted current theory is that the plates were staggered in two alternating rows.
The function of these plates is something of a mystery. It was originally believed that Stegosaurus used them for defense, but due to their somewhat thin and fragile nature, this is unlikely. They may have been used to help regulate body temperature, or for display.
A recent, well-preserved Stegosaurus showed that these dinosaurs had additional bony protective armor on their chin and throat, called gular armor. Tiny bony structures called ossicles protected the underside of the animals neck, like chainmail armor.
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