Mesozoic Species and Groups that Should Be Brought Back from Extinction


The Top Ten

1 Troodon Troodon Troodon is a dubious genus of relatively small, bird-like dinosaurs known definitively from the Campanian age of the Cretaceous period. It includes at least one species, Troodon formosus, known from Montana.

These dinosaurs were actually not as dangerous as humans may think, as they filled an omnivorous niche similar to modern foxes, so they rarely attack animals larger than themselves, as foxes do in modern times. They could also adapt really well in a life in a city in a similar manner to foxes, and if they adapt to deal with predation and eggs being eaten by modern predatory and egg-eating mammals, Troodons would flourish. - DinoLover4242

2 Plesiosaurs Plesiosaurs

Plesiosaurs had a unique swimming fashion that not even sea turtles have in modern times, so by bringing any species of Plesiosaurs back from extinction, we could finally study what they look like, what they eat, and how they swim. Maybe due to popular demands, some people may introduce some non-invasive Plesiosaurs into modern oceans, they may adapt to deal with marine mammals they would eventually co-exist with. - DinoLover4242

3 Ichthyosaurs Ichthyosaurs
4 Compsognathus Compsognathus Compsognathus is a genus of small, bipedal, carnivorous theropod dinosaur. Members of its single species Compsognathus longipes could grow to around the size of a turkey.

A lot of people would love to have these small chicken-sized non-avian theropods as pets. - DinoLover4242

5 Microraptor Microraptor

A lot of people would love to have these small pigeon-sized non-avian theropods as pets. - DinoLover4242

6 Sinornithosaurus Sinornithosaurus
7 Oviraptor Oviraptor
8 Therizinosaurids Therizinosaurids
9 Ornithomimids Ornithomimids
10 Pterosaurs Pterosaurs

The Contenders

11 Leedsichthys Leedsichthys
12 Epidexipteryx Epidexipteryx
13 Scansoriopteryx Scansoriopteryx
14 Yi Qi Yi Qi
15 Iguanodon Iguanodon Iguanodon is a genus of ornithopod dinosaur that existed roughly halfway between the first of the swift bipedal hypsilophodontids of the mid-Jurassic and the duck-billed dinosaurs of the late Cretaceous.
16 Brachiosaurus Brachiosaurus Brachiosaurus is a genus of sauropod dinosaur that lived in North America during the Late Jurassic, about 154–153 million years ago.
17 Deinonychus Deinonychus
18 Coelophysis Coelophysis Coelophysis was a small, slenderly-built, ground-dwelling, bipedal carnivore, that could grow up to 3 m long. Coelophysis is one of the earliest known dinosaur genera.
19 Velociraptor Mongoliensis Velociraptor Mongoliensis

Should be brought back, since in reality, Velociraptors are wolf/turkey sized, they do NOT have pronated hands (so they couldn't open doors), their snouts are elongated, and they're covered in thick feathers (including fan feathers on their tails and wing feathers on their arms), so they look like flightless birds with toothy snouts, clawed fingers, and long bony tails, so they look nothing like how Jurassic Park and Jurassic World portrayed them, and they were only about as smart as canines. Maybe if the REAL Velociraptors were resurrected successfully, maybe more people will learn about real Velociraptors instead of just looking at Jurassic Park raptors. - DinoLover4242

20 Gigantoraptor Gigantoraptor
21 Ornitholestes Ornitholestes
22 Masiakasaurus Masiakasaurus
23 Dryosaurus Dryosaurus
24 Parksosaurus Parksosaurus
25 Camptosaurus Camptosaurus
26 Ouranosaurus Ouranosaurus
27 Edmontosaurus Edmontosaurus Edmontosaurus is a genus of hadrosaurid dinosaur. It contains two known species: Edmontosaurus regalis and Edmontosaurus annectens.
28 Corythosaurus Corythosaurus
29 Parasaurolophus Parasaurolophus Parasaurolophus is a genus of ornithopod dinosaur that lived in what is now North America during the Late Cretaceous Period, about 76.5–74.5 million years ago.
30 Psittacosaurus Psittacosaurus Psittacosaurus is a genus of extinct ceratopsian dinosaur from the Early Cretaceous of what is now Asia, existing between 123.2 and 100 million years ago.
31 Microceratops Microceratops
32 Koreaceratops Koreaceratops
33 Protoceratops Protoceratops Protoceratops is a genus of sheep-sized herbivorous ceratopsian dinosaur, from the Upper Cretaceous Period of what is now Mongolia.
34 Stegoceras Stegoceras
35 Pachycephalosaurus Pachycephalosaurus
36 Plateosaurus Plateosaurus
37 Anchisaurus Anchisaurus
38 Shunosaurus Shunosaurus
39 Mamenchisaurus Mamenchisaurus
40 Diplodocus Diplodocus Diplodocus is a genus of diplodocid sauropod dinosaurs whose fossils were first discovered in 1877 by S. W. Williston.
41 Argentinosaurus Argentinosaurus Argentinosaurus is a genus of titanosaur sauropod dinosaur first discovered by Guillermo Heredia in Argentina. The generic name refers to the country in which it was discovered.
42 Borealosaurus Borealosaurus
43 Saltasaurus Saltasaurus
44 Homalocephale Homalocephale
45 Simosuchus Simosuchus
46 Desmatosuchus Desmatosuchus
47 Placerias Placerias
48 Eoraptor Eoraptor
49 Camarasaurus Camarasaurus
50 Rahonavis Rahonavis
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