Dilophosaurus was the largest predatory dinosaur in North America during the Early Jurassic Epoch of the Jurassic Period.
Dilophosaurus Scientific Classification
Scientific name
Dilophosaurus wetherilli
Dilophosaurus Physical Characteristics
880 lbs
Dilophosaurus Distribition

Followers of the Jurassic Park franchise business would possibly acknowledge the Dilophosaurus as the frilled dinosaur with the ability of spewing poison at its victim. Nevertheless, the genuine- life variation of this dinosaur was extremely various from this. This theropod dinosaur resided in The United States and Canada throughout the very early Jurassic Duration, concerning 193 million years earlier. It was a starved meat- eater and was just one of the earliest huge aggressive dinosaurs.

Summary and Dimension

Jurassic Park Dinosaurs - Dilophosaurus
The genus name Dilophosaurus indicates 2- crested lizard.Cheng Wei/Shutterstock. com

Dilophosaurus is a genus of theropod dinosaurs from The United States and Canada’s Very early Jurassic Date. The genus name indicates “2- crested lizard.” The dinosaur was offered this name due to the fact that it had a set of popular, curved crests placed longitudinally on its head. The remainder of the dinosaur’s head was slim and expanded slimmer in the direction of the rounded top. The head was big symmetrical to the remainder of the body, determining as high as 23 inches in size.

Although typically included as a petite dinosaur, Dilophosaurus was just one of The United States and Canada’s biggest very early Jurassic Duration dinosaurs. Nevertheless, it was still a little smaller sized than the theropod dinosaurs that followed it.

This dinosaur was slim with a light construct. The biggest sampling of the Dilophosaurus evaluated concerning 880 pounds (440 kg) and had to do with 23 feet (7 meters) long. It stood at around 6 feet high. Various analyses have actually been offered for the dinosaur’s popular headwear. Nevertheless, one of the most common description was that the eye- capturing function had blow up air cavities that the dinosaur utilized for sex-related screen. There are additionally conjectures that this dinosaur may have had plumes. This is based upon the analysis of some perceptions left, which seem plumes on some sedimentological artefacts.

Dilophosaurus had long, sharp teeth with a relatively tiny base that increased in the direction of the top. There were 12 teeth on the maxilla and 18 on its reduced jaw. The 2nd and 3rd front teeth included serrations, yet these were lacking in the 4th. One popular function of the Dilophosaurus‘ ‘ teeth was the notch behind the dinosaur’s initial row of teeth. This is a function in numerous crocodiles, and the notch recommends a weak link in between the dinosaur’s premaxillary and maxillary bones.

Diet – What Did Dilophosaurus Eat?

Dilophosaurus was just one of The United States and Canada’s biggest predators throughout the Very early Jurassic Duration. Nevertheless, the primitive killer did not have numerous progressed searching attributes that later on dinosaurs had. For example, it did not have onward- dealing with eyes. This dinosaur would certainly have depended greatly on a solid feeling of odor to make up for this absence of stereo vision.

Dilophosaurus had lengthy- slim teeth that bent a little to the rear of its lengthy jaws. While numerous researchers have actually analyzed their jaw framework as weak (identifying the dinosaur as a scavenger as opposed to a killer), various other proof recommends or else. For example, their solid front arms were adjusted with sharp claws to hold victim. A twist in the dinosaur’s top jaw shows that it can successfully hang on to battling victim. Dilophosaurus was bipedal, yet it can relocating extremely quickly. Specialists assume it may have pursued in tiny packs.

Environment – When and Where It Lived

Dilophosaurus lived throughout the Very early Jurassic, concerning 193 million years earlier. It was an earthbound dinosaur, although some researchers think it may have lived near the water and possibly searched for fish. Fossils of this dinosaur prevail from Kayenta Development, situated in northeastern Arizona.

There are additionally conjectures that this dinosaur lived and pursued with each other in tiny teams. Although there is no definitive proof for this, researchers have actually removed numerous fossils of this dinosaur from the exact same place. The existence of crests on their hand additionally recommends a type of social habits and even pecking order.

Dangers and Predators

Dilophosaurus more than likely ruled the North American continent for numerous years undisputed. It was a peak killer, and none of the modern animals would certainly have stood as a large adequate difficulty. It took numerous years previously larger predators like Allosaurus and the more youthful Tyrannosaurus rex entered the photo, and the Dilophosaurus was possibly lengthy passed this time around.

Discoveries and Fossils – Where It Was Found

In 1940, a regional Navajo male uncovered the initial Dilophosaurus samplings near Tuba City, Arizona. Paleontologists accumulated 2 well- maintained fossils from this website.

In 1954, Samuel P. Welles designated the species to the Megalosaurus genus and provided it the certain name “ wetherilli” in honor of John Wetherill, a Navajo representative. 10 years later on, Welles discovered a bigger and a lot more comprehensive skeletal system that revealed the species had a crested head. Based upon this exploration, he reassigned the species to a brand-new genus Dilophosaurus Extra samplings, consisting of impacts and various other trace fossils, have actually been discovered in numerous places in the USA.

Termination – When Did Dilophosaurus Pass Away Out?

The dilophosaurids were the pinnacle predators in The United States and Canada for numerous million years. The team of theropod dinosaurs began decreasing around 170 million years earlier throughout the Late Jurassic. The precise training course of their decrease isn’t recognized.

Animals Similar to the Dilophosaurus

Similar dinosaurs to the Dilophosaurus consist of:

  • Dracovenator: This is a dinosaur genus that resided in South Africa roughly 201 to 199 million years earlier. Like the Dilophosaurus, Dracovenator was of modest construct.
  • Sarahsaurus: This dinosaur was a primitive participant of the sauropodomorph family. It lived around the exact same time asDilophosaurus Nevertheless, it was an herbivore. Fossils of both dinosaurs were discovered in the exact same development.
  • Liliensternus: This is a genus of basic dinosaurs that lived throughout the Late Triassic Duration concerning 210 million years earlier. Fossils of this bipedal dinosaur have actually been discovered in existing- day Germany.


  1. National History Museum, Available here: https://www.nhm.ac.uk/discover/dino-directory/dilophosaurus.html
  2. Scientific American, Available here: https://www.scientificamerican.com/article/the-real-dilophosaurus-would-have-eaten-the-jurassic-park-version-for-breakfast/
  3. Wikipedia, Available here: https://en.wikipedia.org/wiki/Dilophosaurus

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