Eucercosaurus Facts
Pronunciation: you-SER-koh-SORE-us
Name meaning: Well-tailed Lizard
| Diet | Herbivore |
| Height | 1.5m |
| Length | 4m |
| Weight | 200 kg |
| Environment | Land |
| Era | Cretaceous |
| Period | Early Cretaceous |
| Type | Ornithopod |
| Location | England |
Eucercosaurus was an ornithopod dinosaur that lived during the Albian stage of the Early Cretaceous period, approximately 113 to 100 million years ago. This plant-eating dinosaur roamed the ancient landscapes of what is now Cambridgeshire, England, when the region was a warm, subtropical environment quite different from today's climate.
Known only from fragmentary vertebral remains discovered in the famous Cambridge Greensand formation, Eucercosaurus presents a fascinating puzzle for palaeontologists. The fossil evidence consists of 19 vertebral centra (the main body of the vertebrae), including 3 sacral vertebrae from the hip region, 4 dorsal vertebrae from the back, and 12 caudal vertebrae from the tail, plus a neural arch. These remains were found near Trumpington in Cambridgeshire and first described by the renowned British palaeontologist Harry Seeley in 1879.
As an ornithopod, Eucercosaurus would have been a herbivorous dinosaur, likely feeding on the ferns, cycads, and early flowering plants that were beginning to diversify during the Early Cretaceous. Based on the size and structure of the available vertebrae, scientists estimate it was a relatively small ornithopod, probably capable of both bipedal and quadrupedal locomotion depending on whether it was moving quickly or feeding.
The fragmentary nature of the fossil remains makes Eucercosaurus something of an enigma. While the vertebrae suggest it was indeed an ornithopod dinosaur, the limited material makes it difficult to determine its exact relationships within this diverse group of plant-eating dinosaurs or to reconstruct its appearance with confidence.
What made Eucercosaurus distinctive?
Eucercosaurus is known only from vertebral remains, making distinctive features difficult to determine. The vertebrae suggest it was a relatively small ornithopod with a well-developed tail, as suggested by its name meaning 'well-tailed lizard'.
Behaviour
As an ornithopod, Eucercosaurus likely lived in herds and spent much of its time foraging for plant material. It probably used its beak-like mouth to crop vegetation and may have been able to switch between walking on two legs when moving quickly and four legs when feeding close to the ground.
Discovery
Eucercosaurus was first described by Harry Seeley in 1879. The original fossils were discovered at Cambridge Greensand, near Trumpington, Cambridgeshire, England.
Eucercosaurus FAQ
What did Eucercosaurus eat?
Eucercosaurus was a herbivore that fed on the plants available in
Early Cretaceous England, including ferns, cycads, conifers, and possibly some of the earliest flowering plants that were beginning to appear during this period.
How big was Eucercosaurus?
Based on the size of the vertebrae found, Eucercosaurus is estimated to have been about 1.5 metres tall at the hip and 4 metres long, weighing approximately 200 kilograms. However, these estimates are uncertain due to the fragmentary nature of the remains.
When did Eucercosaurus live?
Eucercosaurus lived during the Albian stage of the
Early Cretaceous period, approximately 113 to 100 million years ago, when England had a much warmer, subtropical climate.
Where was Eucercosaurus found?
Eucercosaurus was discovered in the Cambridge Greensand formation near Trumpington in Cambridgeshire, England. This geological formation is famous for yielding many important fossil discoveries.
How do you pronounce Eucercosaurus?
Eucercosaurus is pronounced 'you-SER-koh-SORE-us', with emphasis on the second syllable. The name comes from Greek words meaning 'well-tailed lizard'.
What does Eucercosaurus mean?
Eucercosaurus means 'well-tailed lizard' in Greek. This name was chosen by Harry Seeley because of the numerous tail vertebrae (12 caudal vertebrae) found with the original specimen.
How fast could Eucercosaurus run?
The running speed of Eucercosaurus is unknown due to the limited fossil material available. As a small ornithopod, it may have been capable of reasonable speeds when escaping predators, but without leg bones, estimates would be highly speculative.
What type of dinosaur was Eucercosaurus?
Eucercosaurus was an ornithopod dinosaur, part of a large group of herbivorous dinosaurs that included duck-billed dinosaurs and iguanodonts. However, its exact family relationships remain unclear due to the fragmentary fossil evidence.
Was Eucercosaurus related to birds?
No, Eucercosaurus was not closely related to birds. As an ornithopod, it belonged to the ornithischian dinosaurs, while birds evolved from theropod dinosaurs in the saurischian group. These two major dinosaur groups split very early in dinosaur evolution.
How many Eucercosaurus fossils have been found?
Only one specimen of Eucercosaurus is known, consisting of 19 vertebral centra (3 sacral, 4 dorsal, and 12 caudal vertebrae) plus a neural arch, all found near Trumpington, Cambridgeshire. No additional specimens have been discovered since the original 1879 description.
