Doryphorosaurus Facts
Pronunciation: dor-ih-FOR-oh-SORE-us
Name meaning: Spear-bearing lizard
| Diet | Herbivore |
| Height | 2m |
| Length | 5m |
| Weight | 1.5 tonnes |
| Environment | Land |
| Era | Jurassic |
| Period | Middle Jurassic |
| Type | Stegosaur |
| Location | North America |
Doryphorosaurus was a stegosaur that lived during the Middle to Late Jurassic period, approximately 161-149 million years ago. This plant-eating dinosaur roamed the ancient landscapes of what is now North America, sharing its world with other famous dinosaurs like Allosaurus and Diplodocus.
Like other stegosaurs, Doryphorosaurus was a quadrupedal herbivore with a distinctive body plan. It likely possessed the characteristic double row of plates or spikes running along its back, though the exact arrangement remains uncertain due to limited fossil evidence. Its name, meaning 'spear-bearing lizard', suggests it may have had particularly prominent defensive spikes.
As a herbivore, Doryphorosaurus would have fed on low-growing plants, ferns, and cycads that were abundant during the Jurassic period. Its small head and simple teeth were well-suited for processing plant material, whilst its powerful tail, probably armed with spikes, provided an effective defence against predators.
However, our understanding of Doryphorosaurus remains limited as it is based on fragmentary fossil remains. This has led many palaeontologists to consider it a nomen dubium, meaning the available evidence is insufficient to properly define the genus or distinguish it clearly from other stegosaurs.
What made Doryphorosaurus distinctive?
Doryphorosaurus likely had the typical stegosaur features of a double row of plates or spikes along its back and a spiked tail for defence. However, specific distinguishing characteristics remain unclear due to limited fossil material.
Behaviour
Doryphorosaurus would have been a peaceful herbivore, likely living in small groups and spending most of its time foraging for plants. When threatened, it could have used its spiked tail as a formidable weapon against predators.
Discovery
Doryphorosaurus was first described by Othniel Charles Marsh in 1877. The original fossils were discovered at Morrison Formation, Colorado, USA.
Doryphorosaurus FAQ
What did Doryphorosaurus eat?
Doryphorosaurus was a herbivore that fed on low-growing plants, ferns, cycads, and other vegetation available during the Jurassic period. Its small head and simple teeth were adapted for processing plant material rather than meat.
How big was Doryphorosaurus?
Doryphorosaurus is estimated to have been about 5 metres long and 2 metres tall at the hip, weighing approximately 1.5 tonnes. However, these estimates are uncertain due to the limited fossil material available.
When did Doryphorosaurus live?
Doryphorosaurus lived during the Middle to
Late Jurassic period, approximately 161.5 to 149.2 million years ago, making it a contemporary of many famous dinosaurs including
Stegosaurus and
Allosaurus.
Where was Doryphorosaurus found?
Doryphorosaurus fossils were discovered in North America, specifically in the Morrison Formation of Colorado, USA. This rock formation is famous for preserving many Jurassic dinosaur species.
How do you pronounce Doryphorosaurus?
Doryphorosaurus is pronounced 'dor-ih-FOR-oh-SORE-us'. The name can be broken down into syllables as Do-ry-pho-ro-sau-rus, with emphasis on the 'FOR' syllable.
What does Doryphorosaurus mean?
Doryphorosaurus means 'spear-bearing lizard' in Greek. This name likely refers to the defensive spikes that adorned the tail and possibly the back of this stegosaur dinosaur.
How fast could Doryphorosaurus run?
The speed of Doryphorosaurus is unknown due to limited fossil evidence. However, like other stegosaurs, it was likely a slow-moving dinosaur built more for defence than speed, probably managing only a few kilometres per hour at most.
What type of dinosaur was Doryphorosaurus?
Doryphorosaurus was a stegosaur, a type of armoured dinosaur from the family Stegosauridae. These were herbivorous dinosaurs known for their distinctive plates and spikes along their backs and tails.
Was Doryphorosaurus related to birds?
No, Doryphorosaurus was not closely related to birds. As a stegosaur, it belonged to the ornithischian dinosaurs, whilst birds evolved from theropod dinosaurs in the saurischian group. These two groups diverged early in dinosaur evolution.
How many Doryphorosaurus fossils have been found?
Very few Doryphorosaurus fossils have been found, and the remains are quite fragmentary. This limited fossil evidence is why many palaeontologists consider it a nomen dubium, meaning there isn't enough material to properly define the species.
