Eustreptospondylus, often referred to as the ‘Eustrep’ for short, was a carnivore dinosaur whose name translates to “well-reversed vertebrae.” It lived in parts of what is today Europe, in the Late Jurassic period–a time when dinosaurs roamed the Earth.
Its unique characteristics and the circumstances of its discovery provide a wealth of information about the world as it was millions of years ago.
Eustreptospondylus Key Facts
| Keyword | Fact |
|---|---|
| Eustreptospondylus pronunciation | yoo-strep-toe-spon-die-luss |
| Meaning of name | Well-reversed vertebrae |
| Group | Theropod |
| Type Species | Eustreptospondylus oxoniensis |
| Diet | Carnivore |
| When it Lived | 164.7 to 161.2 NYA |
| Period | Late Jurassic |
| Epoch | Late/Upper Callovian |
| Length | 23.0 ft |
| Height | 4.9 ft |
| Weight | 1000-1200 lbs. |
| Mobility | Moved on two legs |
| First Discovery | 1870 by James Parker |
| Location of first find | England, UK |
| First Described by | 1871 by John Phillips |
| Holotype | OUM J13558 |
Eustreptospondylus axonomy and Timeline
Eustreptospondylus‘ name is derived from the Greek words ‘eu’, meaning “good, well,” ‘streptos’, meaning “turned, curved,” and ‘spondylus’, meaning “vertebra”. This name is a testament to the dinosaur’s unique vertebral structure. This carnivorous dinosaur belongs to the Theropoda group, specifically the Megalosauridae family. Its type species is Eustreptospondylus oxoniensis.
It lived during the Late Jurassic period, specifically the Late Callovian epoch some 164.7 to 161.2 million years ago. This puts it in a time when the world was a vastly different place than it is today, as Pangaea was finishing its split and the continents began their migration to their current positions.
Listen to Pronunciation
Discovery & Fossil Evidence
Eustreptospondylus was discovered in 1870, in the Summertown Brick Pit in England, and they were acquired by James Parker from the workers at the pit. This discovery was a significant find, as it provided the first glimpse into the existence of this unique dinosaur.
.JPG){kind=link}
This dinosaur was later described by the English geologist John Phillips in 1871. Phillips’ description of the dinosaur was based on the fossils that had been discovered up to that point, which included a nearly complete skeleton. This level of preservation is relatively rare in paleontology and it provided a wealth of information about the dinosaur’s physical characteristics and potential behaviors.
Since the initial discovery, there have been additional finds that have further expanded our understanding of this dinosaur. Each new discovery adds another piece to the puzzle, helping to paint a more complete picture of this fascinating dinosaur and the world it inhabited.
Eustreptospondylus Size and Description
This is a large theropod dinosaur known for its unique vertebral structure, which is reflected in its name–”well-reversed vertebrae.” Its body shape is typical of theropods, with a large head, a long, flexible neck, and a tail that provided balance. The dinosaur moved on two legs, also characteristic of theropods, and its carnivorous diet suggests that it was a formidable predator in its time.
Size and Weight of Type Species
Eustreptospondylus was a sizable dinosaur, with estimates suggesting a length of around 23 feet and a height at the hips arounf 5 feet. However, as with many aspects of paleontology, there is some degree of uncertainty and debate regarding these measurements.
As for the dinosaur’s weight, estimates are even more challenging to pin down due to the lack of complete fossil evidence. However, based on its size and the known characteristics of similar dinosaurs, the size is believed to have been around 1000-1200 lbs. .
The Ultimate Dino Quiz
Do you want to test your knowledge on dinosaurs? Then try this Ultimate Dino Quiz! Don’t worry if you get some of the answers wrong, and look at it as an opportunity to refresh and improve your knowledge!
Don’t forget to try our other games as well!
The Dinosaur in Detail
Eustreptospondylus is a dinosaur that stands out not just for its size, but also for its unique features. One of the most distinctive aspects of this dinosaur is its vertebrae. The name, meaning “well-reversed vertebrae,” is a testament to this unique characteristic. The vertebrae are opisthocoelous, meaning they are convex in the front and concave in the back. This feature, along with its size and carnivorous nature, suggests that this was a formidable creature in its time.
Its adaptability is another aspect that sets it apart. As a theropod, it was likely a skilled predator that was capable of hunting and capturing its prey with efficiency. This adaptability would have been crucial for its survival in the Late Jurassic period–a time when competition for resources was fierce.
Notable specimens have provided valuable insights into this dinosaur. The nearly complete skeleton discovered in the Summertown Brick Pit in England has been particularly informative, offering a detailed look at the dinosaur’s physical characteristics and potential behaviors. This specimen, along with others that have been discovered, has significantly contributed to our understanding of the Eustreptospondylus and its place in prehistoric ecosystems.
Eustreptospondylus in its Natural Habitat
This predator lived during the Late Jurassic period in a time when the Earth’s climate and geography were vastly different from today. The world during this time was warm and humid with lush vegetation covering the landscape. This environment would have provided ample resources for a carnivorous dinosaur like Eustreptospondylus.
As a carnivore, it would have been a predator that hunted other dinosaurs and possibly smaller animals for food. Its mobility, moving on two legs, would have given it the speed and agility necessary to capture its prey. The dinosaur’s diet and hunting habits would have played a significant role in shaping its behavior and lifestyle.
Its impact on its environment would have been significant. As a large predator, it would have been at the top of the food chain, influencing the populations of its prey species. Its activities would have shaped the landscape around it, from the paths it created as it moved through the vegetation to the marks it left on the land from its hunting activities.
Interesting Points about Eustreptospondylus
- This is one of the few dinosaurs for which a nearly complete skeleton has been found, providing a wealth of information about its physical characteristics.
- The dinosaur’s name, which translates to “well-reversed vertebrae,” is in reference to its vertebral structure.
- This was a large carnivorous dinosaur, suggesting that it was a formidable predator in its time.
- The dinosaur’s existence during the Late Jurassic period places it in a time when the world was vastly different from today.
- It was first discovered in England, marking it as one of the significant and earliest dinosaur discoveries in the UK.
Contemporary Dinosaurs
In the ancient world where the Eustreptospondylus roamed, it shared its existence with a number of other dinosaurs. Among them were Megalosaurus, Allosaurus, Cetiosaurs, and Lexovisaurus. Each of these European dinosaurs contributed to the intricate dynamics of their shared environment.
Megalosaurus was a creature of considerable size that might have been a formidable competitor to Eustreptospondylus. Their potential encounters could have been a testament to the survival of the fittest, a silent duel played out under the prehistoric sun.
Allosaurus was another predator that might have been a rival, their interactions a thrilling dance of dominance and survival. Their coexistence paints a vivid picture of the challenges Eustreptospondylus might have faced, adding a layer of complexity to its existence.
Cetiosaurus, on the other hand, was a gentle giant–an herbivore that likely coexisted peacefully with Eustreptospondylus. Their lives may have been intersecting yet not conflicting as a testament to the diverse ways life found its path. Lexovisaurus, another herbivore, might have been a mere bystander in the life of Eustreptospondylus. Their paths likely crossed without conflict and served as a reminder of the diverse tapestry of life that existed in those ancient times.
Frequently Asked Questions
The name translates to “well-reversed vertebrae,” a testament to the dinosaur’s vertebral structure.
It lived during the Late Jurassic period, specifically the Late Callovian epoch, between 164.7 and 161.2 million years ago.
This was a carnivorous dinosaur, meaning it ate meat. It likely hunted other dinosaurs and possibly smaller animals for food.
This dinosaur was first discovered in England, UK in 1870 by James Parker.
It was first described by English geologist John Phillips in 1871.
It moved on two legs, a characteristic trait of theropods.
Sources
- https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6035862/
- https://www.researchgate.net/publication/308297143_A_new_megalosaurid_theropod_dinosaur_from_the_late_Middle_Jurassic_Callovian_of_north-western_Germany_Implications_for_theropod_evolution_and_faunal_turnover_in_the_Jurassic
- https://www.researchgate.net/publication/230808740_The_osteology_of_Masiakasaurus_knopfleri_a_small_abelisauroid_Dinosauria_Theropoda_from_the_Late_Cretaceous_of_Madagascar
- https://www.researchgate.net/publication/254256879_The_Anatomy_and_Systematics_of_Eustreptospondylus_Oxoniensis_a_Theropod_Dinosaur_from_the_Middle_Jurassic_from_Oxfordshire_England
- https://www.academia.edu/4920877/The_Anatomy_and_Systematics_of_Eustretospondylus_oxoniensis_a_Theropod_dinosaur_from_the_Middle_Jurassic_of_Oxfordshire_England
Please note that the information in this article is based on various sources, drawing on scientific research, fossil evidence, and expert analysis. The aim is to provide a comprehensive and accurate overview of the Eustreptospondylus, but please be aware that our understanding of dinosaurs and their world is constantly evolving as new discoveries are made.
This article was last fact-checked: Joey Arboleda, 06-11-2023
Featured Image Credit: ДиБгд, CC BY-SA 3.0, via Wikimedia Commons
