How Much Did a Spinosaurus Eat?

The Spinosaurus, one of the most formidable dinosaurs that ever roamed the earth, has long intrigued scientists and dinosaur enthusiasts alike. Its unique features, particularly its sail-like spine and crocodile-like mouth, have made it a subject of intense study and speculation. Among the many questions asked about this fascinating creature, one that frequently pops up is: “What did the Spinosaurus eat?”

Understanding the Spinosaurus Diet

Unraveling the mystery of the Spinosaurus diet requires us to delve into the fossil record. From what we know so far, the Spinosaurus was primarily a piscivore, meaning its diet consisted largely of fish. This conclusion is drawn from the shape and structure of its teeth and jaws, which are reminiscent of modern-day fish-eating animals.

Spinosaurus teeth were conical and sharp, perfect for catching slippery prey. They also had a distinctly curved, elongated snout filled with such teeth, much like a crocodile’s. This suggests that they were adapted to catching fish, similar to how modern crocodiles do today.

Spinosaurus Eating Fish

There is ample evidence to suggest that the Spinosaurus ate fish. Fossilized remains of large prehistoric fish have been found in close proximity to Spinosaurus fossils, hinting at a predator-prey relationship. Moreover, isotopic analysis of Spinosaurus teeth shows a pattern consistent with a diet rich in aquatic creatures.

However, the Spinosaurus’ diet was not limited to fish alone. It is believed that they were opportunistic feeders, eating whatever was available. This could have included small to medium-sized dinosaurs or carrion.

The Actual Look of Spinosaurus

While we have a fairly good idea of the Spinosaurus’ actual look, it’s important to remember that our understanding is based on incomplete fossil records. The most distinctive feature of the Spinosaurus is its sail-like structure on its back, which was likely used for display or thermoregulation. Its elongated, narrow skull and conical teeth also set it apart from other theropods.

Modern Spinosaurus and Its Relatives

Although the Spinosaurus went extinct around 93.5 million years ago during the Cretaceous period, it has left a lasting impact on our imagination. The term “modern Spinosaurus” is often used to describe how this dinosaur is depicted in popular culture today, based on the latest scientific findings.

As for relatives, the Spinosaurus belongs to the Spinosauridae family, which includes other similar semi-aquatic dinosaurs like Baryonyx and Suchomimus. These dinosaurs share many features with the Spinosaurus, such as their fish-eating habits and crocodile-like snouts.

What Did Spinosaurus Sound Like?

While it’s impossible to know exactly what a Spinosaurus sounded like, we can make educated guesses based on the structure of its skull and comparisons with modern animals. Some scientists speculate that the Spinosaurus may have produced deep, resonating sounds, much like a crocodile or alligator. However, without more evidence, this remains speculative.


The diet of the Spinosaurus, its actual look, and its place in the modern imagination continue to captivate us. As we uncover more about this fascinating creature, we gain a deeper understanding not only of the Spinosaurus itself but also of the world it lived in.

So, what did the Spinosaurus eat? From the evidence available, we can confidently say that fish were a staple in its diet. But as an opportunistic feeder, it likely ate other creatures too. The image of this formidable predator, lurking in the waters and lunging out to catch its prey, adds another layer to our understanding of the diverse and dynamic world of dinosaurs.


  • Amiot R., Buffetaut E., L√©cuyer C., et al. (2010). Oxygen isotope evidence for semi-aquatic habits among spinosaurid theropods. Geology, 38(2), 139-142.
  • Ibrahim N., Sereno P.C., Dal Sasso C., et al. (2014). Semiaquatic adaptations

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