Hypsibema Facts
Pronunciation: HIP-see-BEE-mah
Name meaning: High Step
| Diet | Herbivore |
| Height | 4m |
| Length | 15m |
| Weight | 12 tonnes |
| Environment | Land |
| Era | Cretaceous |
| Period | Late Cretaceous |
| Type | Ornithopod |
| Location | Eastern North America |
Hypsibema was one of the largest ornithopod dinosaurs ever discovered, living approximately 83.6 million years ago during the Late Cretaceous period. This massive herbivore roamed the coastal plains of what is now eastern North America, particularly in areas that would become North Carolina and New Jersey. As a basal hadrosauroid, Hypsibema represents an important evolutionary stage in the development of duck-billed dinosaurs.
Standing roughly 4 metres tall at the hip and stretching up to 15 metres in length, Hypsibema was truly enormous, weighing an estimated 12 tonnes. Its impressive size made it one of the giants of its ecosystem. Like other ornithopods, it could move on both two and four legs, likely walking on all fours when feeding on low vegetation and rearing up on its powerful hind legs when necessary.
As a herbivore, Hypsibema possessed the typical ornithopod features for plant processing, including batteries of small teeth perfect for grinding tough vegetation. Its diet likely consisted of ferns, conifers, and flowering plants that were becoming increasingly common during the Late Cretaceous. The dinosaur's large size would have allowed it to reach high into trees and process enormous quantities of plant matter daily.
Fossil remains of Hypsibema have been found primarily in the Tar Heel Formation of North Carolina, with additional specimens discovered in New Jersey's Marshalltown Formation. These coastal plain deposits suggest the dinosaur lived in warm, humid environments with abundant vegetation.
What made Hypsibema distinctive?
Hypsibema was distinguished by its enormous size, making it one of the largest ornithopod dinosaurs known. Its robust build and powerful limbs were adapted to support its massive weight, whilst maintaining the ability to rear up on its hind legs when needed.
Behaviour
Hypsibema likely lived in herds, as evidenced by multiple fossil discoveries in similar geological formations. Its great size would have provided protection from most predators, though juveniles may have stayed close to adults for safety.
Discovery
Hypsibema was first described by Edward Drinker Cope in 1869. The original fossils were discovered at Tar Heel Formation, North Carolina, USA.
Hypsibema FAQ
What did Hypsibema eat?
Hypsibema was a herbivore that fed on a variety of plants including ferns, conifers, and early flowering plants. Its batteries of small grinding teeth were perfectly adapted for processing tough vegetation, and its enormous size meant it needed to consume vast quantities of plant matter daily.
How big was Hypsibema?
Hypsibema was enormous, standing about 4 metres tall at the hip and reaching up to 15 metres in total length. It weighed approximately 12 tonnes, making it one of the largest ornithopod dinosaurs ever discovered.
When did Hypsibema live?
Hypsibema lived during the
Late Cretaceous period, approximately 83.6 million years ago during the Campanian stage. This was a time when flowering plants were becoming more common and the climate was warm and humid.
Where was Hypsibema found?
Hypsibema fossils have been discovered in eastern North America, primarily in the Tar Heel Formation of North Carolina and the Marshalltown Formation of New Jersey. These coastal plain deposits indicate it lived in warm, humid environments.
How do you pronounce Hypsibema?
Hypsibema is pronounced 'HIP-see-BEE-mah', with emphasis on the first syllable. The name comes from Greek roots meaning 'high step'.
What does Hypsibema mean?
Hypsibema means 'high step' in Greek, possibly referring to the dinosaur's long stride length due to its massive size, or perhaps to its ability to rear up on its hind legs despite its enormous bulk.
How fast could Hypsibema run?
The running speed of Hypsibema is unknown, but given its enormous size and weight of 12 tonnes, it likely moved relatively slowly. Its great bulk would have made rapid movement difficult, though it may have been capable of short bursts of speed when threatened.
What type of dinosaur was Hypsibema?
Hypsibema was an ornithopod dinosaur, specifically a basal hadrosauroid from the family Hadrosauridae. This places it among the duck-billed dinosaurs, though it represents an earlier evolutionary stage in their development.
Was Hypsibema related to birds?
As an ornithopod dinosaur, Hypsibema was not closely related to birds. Birds evolved from theropod dinosaurs, whilst Hypsibema belonged to the ornithischian (bird-hipped) group, which despite the name, were not the ancestors of modern birds.
How many Hypsibema fossils have been found?
Relatively few Hypsibema fossils have been discovered, with most remains of the type species H. crassicauda found in North Carolina, plus some material from New Jersey. The fragmentary nature of many specimens makes complete reconstruction challenging.
