Top 10 Weirdest and Most Bizarre Dinosaurs

The Top Ten

  1. Masiakasaurus

    Very poorly known, so it really deserves a spot. Its teeth are just so scary yet surprisingly cool and bizarre.

  2. Sharovipteryx

  3. Raptorex

  4. Concavenator

    The Concavenator is a weird dinosaur with a weird bone on its back! It's very weird.

  5. Therizinosaurus

    Therizinosaurus is a genus of giant therizinosaurid dinosaurs that lived in what is now Mongolia during the Late Cretaceous period, around 70 million years ago. It was discovered in the Nemegt Formation and is especially known for its extremely long claws, which could grow up to three feet in length... read more

    No dinosaur will ever be as weird and bizarre as Therizinosaurus and its kin. It's a theropod, so you'd expect it to be a carnivore judging by its infamous claws. In reality, it's a herbivore that used its claws either for defense or to pull branches towards it.

    Another amazing factor is that when it was first discovered, scientists speculated it was a gigantic turtle. It even looks like a reptilian sloth!

    Who did you expect? This dinosaur is just so weird that it is actually really cool. With 1-meter long claws, you'd think this is going to be one terrifying monster, yet it is a herbivore despite its status as a theropod! Plus, its whole family tree consists of herbivores. Therizinosaurus still stands out as the most bizarre and weirdest dinosaur in existence. Also, don't get fooled. This beast can slice up a Tarbosaurus with its awesome claws!

  6. Pelecanimimus

  7. Irritator

  8. Spinosaurus

    Spinosaurus is a genus of theropod dinosaur that lived in what is now North Africa during the Lower Albian to Lower Cenomanian stages of the Cretaceous period, approximately 112 to 97 million years ago. It is notable for its distinctive sail-like structure on its back and semi-aquatic adaptations. Spinosaurus... read more

    Spinosaurus is one of my favorite dinosaurs ever, probably in my top three. And no, I'm not going for Jurassic Park III.

    Part of why I love Spinosaurus is because of how unique and bizarre it looks. No dinosaur could look as ridiculous as that (maybe except Therizinosaurus, but who cares). It's a fish-eater despite being a theropod, and that snout just steals people's attention. The sail itself makes its appearance more appealing. Lastly, it's a quadrupedal animal, and that's coming from a theropod, something that always walks on two feet.

    I don't think it holds a candle to the Rex, but I love Spinosaurus for being its own. Weird, big, and just amazing to look at. It's one dinosaur you wouldn't think about until actually seeing it.

  9. Suzhousaurus

  10. Amargasaurus

    Native to what is now Argentina, Amargasaurus was a sauropod dinosaur from the Early Cretaceous period. It had distinctive elongated neural spines along its neck and back, which may have been used for display or defense. Unlike many other sauropods, Amargasaurus was relatively small, measuring about... read more

    A small sauropod with long, spiky spines on its back formed into a double sail. Now that's genius for something like Amargasaurus.

    11. The Newcomers
  11. ?

    Dracorex

    Dracorex was named as a genus of pachycephalosaurid dinosaur from the Late Cretaceous of North America, although it is now commonly regarded as a juvenile form of Pachycephalosaurus. The only named species, Dracorex hogwartsia, was discovered in South Dakota and named in honor of the Harry Potter series... read more

  12. ?

    Balaur bondoc

    This dino came from Romania (my homeland) and was a raptor bigger than the Velociraptor. It was weird because it had two killing claws on both feet, so this thing was a killer. Its name means dragon. This is my favorite raptor.

    13. The Contenders

  13. Carnotaurus

    Carnotaurus, meaning "meat-eating bull" in Latin, is a genus of abelisaurid theropod dinosaur that lived in what is now South America about 70 million years ago during the Late Cretaceous period. It is known for its distinctive horns above the eyes and extremely reduced forelimbs. Carnotaurus was one... read more

    I wouldn't forget my third favorite dinosaur! Carnotaurus sure does look weird. A bulldog-like head, a well-preserved body with bony bumps on its back, and surprisingly puny arms are just enough to make this land on this list. Oh, and it looks demonic too.

    I always found Carnotaurus to be one of my favorites. It looks like a bull/dinosaur. Its long legs for speed make this big-headed dinosaur look very interesting while running, or so I presume.

    One of the theropods capable of wiping out humanity!

  14. Mononykus

    Small, puny, and very poorly known. However, this guy has only one finger and looks kind of weird to me as well.

    Is it stranger that the bird Masked Lapwing also has one finger?

  15. Obamadon

    I still can't believe this is a real dinosaur species.

  16. Scansoriopteryx

  17. Parksosaurus

  18. Dilophosaurus

    Dilophosaurus is a genus of theropod dinosaur. It includes a single confirmed species, Dilophosaurus wetherilli, which lived during the Early Jurassic period. Fossils have been found in the Kayenta Formation of Arizona.

    The first "King of the Dinosaurs," Dilophosaurus is now one of the most famous (nice job, Spielberg). Plus, those crests are just so cool-looking. No frill and poison. Those were just imaginary.

    It didn't have frills or shoot acid. It was a dangerous dinosaur, though, and it did have those round horns.

    I want to know if this creature had poisonous spit.

  19. Procompsognathus

  20. Ornitholestes

  21. Tyrannosaurus

    Tyrannosaurus, whose name means "tyrant lizard" in Ancient Greek, is a genus of coelurosaurian theropod dinosaur. It had an extraordinary bite force estimated at up to approximately 12,800 pounds, or 5,800 kilograms of force. This is considered the strongest estimated bite of any known terrestrial animal... read more

  22. Nothronychus

  23. Yutyrannus

    Originating from Early Cretaceous China, Yutyrannus is a feathered tyrannosauroid dinosaur. With an estimated length of about 30 feet, it is the largest known dinosaur with direct evidence of feathers. It likely served as the apex predator in its ecosystem, dominating its prehistoric environment.

  24. Acrocanthosaurus

    Acrocanthosaurus is a genus of theropod dinosaur that existed in what is now North America during the Aptian and early Albian stages of the Early Cretaceous. Fossils have primarily been found in the Antlers Formation of Oklahoma and Texas. It was one of the largest theropods of its time, recognized... read more

  25. Utahraptor

    Utahraptor is a genus of large theropod dinosaurs from the Early Cretaceous Period. It includes the species Utahraptor ostrommaysorum, which is the largest known member of the family Dromaeosauridae. Fossils have been discovered in the Cedar Mountain Formation of Utah, and the species is estimated to... read more

  26. Baryonyx

    Baryonyx is a genus of theropod dinosaur that lived during the Barremian stage of the Early Cretaceous Period, about 130 to 125 million years ago. Fossils have been found primarily in the United Kingdom. Baryonyx is notable for its long, crocodile-like snout and the large claw on its first finger.

  27. Troodon

    Troodon is a dubious genus of relatively small, bird-like dinosaurs known from the Campanian age of the Cretaceous period. The best-known species, Troodon formosus, is based on fossils found in Montana. However, its classification remains uncertain due to the limited and fragmentary nature of the fossil... read more

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