NAME: Meaning - Iguanodon means "Iguana tooth"
Pronounced - ig-WAHN-oh-don
Named By - Gideon Mantell
When Named - 1825
DIET: Herbivore (plant-eater) - Iguanodon probably ate cycads, conifers, and ginkgos
SIZE: Length - 20-33 ft (6-10 m) long
Height - 9 ft (2.7 m) tall at the hips
Weight - 4-5 tons
WHEN IT LIVED: Cretaceous period, about 135-125 million years ago
WHERE IT LIVED: Fossils have been found in Europe (in England, Belgium, and Germany), northern Africa, and the USA.
FOSSILS: Teeth and a few bones of Iguanodon were found in 1822, (perhaps by Gideon Mantell's wife, Mrs Mary Mantell) in Sussex, (southern) England. Hundreds of Iguanodon fossils have been found since then.
CLASSIFICATION: Kingdom Animalia (animals)
Phylum Chordata (having a hollow nerve chord ending in a brain)
Class Archosauria (diapsids with socket-set teeth, etc.)
Order Ornithischia - bird-hipped dinosaurs
Suborder Ornithopoda
Infraorder Iguanodontia - having spiked thumbs
Genus Iguanodon
Species I. bernissartensis (type species named by Boulenger and van Beneden, 1881)

INTERESTING
FACTS: Iguanodon was the second dinosaur that was scientifically named. This dinosaur had a hard, conical spike on each thumb.

NAME: Meaning - Baryonyx means "heavy claw"
Pronounced - BAR-ee-ON-iks
Named By - Angela C. Milner and Alan J. Charig
When Named - 1987
DIET: Carnivore (meat-eater) A fossilized Baryonyx was found with a fossilized meal in its stomach; this stomach contained fish scales, fish bones, and some partially digested bones of a young Iguanodon. So far, Baryonyx is the only known dinosaur that ate fish. It may have waded in rivers and shallow seas to catch fish (just as some modern-day bears do).
SIZE: Length - 32 feet (9.5 m) long
Height - 8 ft (2.5 m) tall at the hips
Weight - 1.5-2 tons
WHEN IT LIVED: Early to middle Cretaceous period, about 125 million years ago
WHERE IT LIVED: Fossils have been found in England, Europe.
FOSSILS: Baryonyx was found in 1983 in a clay pit in Surrey, England, by the British amateur fossil hunter William Walker. It was the first carnivorous (meat-eating) dinosaur found in England. About 70% of this dinosaur's skeleton was found. Baryonyx was found 30 miles south of London, England, in 1983.
CLASSIFICATION: Kingdom Animalia (animals)
Phylum Chordata (having a hollow nerve chord ending in a brain)
Class Archosauria (diapsids with socket-set teeth, etc.)
Order Saurischia - lizard-hipped dinosaurs
Suborder Theropoda - bipedal carnivores
Tetanura - advanced theropods with three fingers
Family Spinosauria
Genus Baryonyx
Species B. walkeri (type species named by Angela C. Milner and Alan J. Charig, 1987)

INTERESTING
FACTS: Baryonyx had huge 1-foot (30.5-cm) long claws on its hands (hence its name). It had long, narrow, crocodile-like jaws with 96 small, serrated teeth (this is 1.5 times the number of teeth that most other theropods had). It had a small crest on its snout. Baryonyx had a long, straight neck (unlike other theropods, who had s-shaped necks) and a long tail. Its low-slung body was supported by 2 large rear legs and 2 slightly smaller arms.

NAME: Meaning - Eustreptospondylus means "well-curved vertebrae" or "well-reversed vertebrae"
Pronounced - yoo-STREP-to-SPON-di-lus
Named By - Alick Walker
When Named - 1964
DIET: Carnivore (meat-eater)
SIZE: Length - Roughly 23-30 ft (7-9 m) long
Height - 10-12 ft (3-3.7 m) tall at the hips
Weight - 200 kg to 250 kg (figures are for a sub-adult specimen)
WHEN IT LIVED: Jurassic period, about 163 million years ago
WHERE IT LIVED: Fossils have been found in England, Europe.
FOSSILS: A single, incomplete fossil of a sub-adult has been found.
CLASSIFICATION: Kingdom Animalia (animals)
Phylum Chordata (having a hollow nerve chord ending in a brain)
Class Archosauria (diapsids with socket-set teeth, etc.)
Order Saurischia - lizard-hipped dinosaurs
Suborder Theropoda - bipedal carnivores
Tetanura - advanced theropods with three fingers
Genus Eustreptospondylus
Species E. oxoniensis (type species named by A. Walker, 1964)

INTERESTING
FACTS: Eustreptospondylus was a bipedal predator with small arms, large, powerful jaws, sharp teeth, and a long, stiff tail.

NAME: Meaning - Megaraptor means "huge robber"
Pronounced - meg-a-RAP-tor
Named By - Fernando E. Novas
When Named - 1998
DIET: Carnivore (meat-eater)
SIZE: Length - 20-26 feet (6-8 m) long
Height - roughly 6 ft (2 m) tall at the hips
Weight - ?
WHEN IT LIVED: Late Cretaceous period, about 90-84 million years ago
WHERE IT LIVED: Fossils have been found in the Rio Neuquen Rock Formation, Sierra del Portezuelo, Province of Neuquen, Argentina, South America.
FOSSILS: Megaraptor remains were found in 1996 in Northwest Patagonia, Argentina, by paleontologist Fernando E. Novas. Only a few toe and leg bones have been found, including a sickle-claw 14 inch (35 cm) long.
CLASSIFICATION: Kingdom Animalia (animals)
Phylum Chordata (having a hollow nerve chord ending in a brain)
Class Archosauria (diapsids with socket-set teeth, etc.)
Order Saurischia - lizard-hipped dinosaurs
Suborder Theropoda - bipedal carnivores
Tetanura - advanced theropods with three fingers
Infraorder Coelurosauria - lightly-built fast-running predators with hollow bones and large brains
Family Deinonychosauria (dromaeosaurids and their ancestors) - sickle-clawed predators
Genus Megaraptor
Species M. namunhuaiquii (type species named by Novas, 1998)

INTERESTING
FACTS: Megaraptor was a large, terrifying late Cretaceous predator with two enormous, sickle-like toe claws . It was a huge, lightly built, fast-moving, agile, bipedal (walked on two legs), bird-like dinosaur. It had a curved, flexible neck, and a big head with sharp, serrated teeth in very powerful jaws.
The second toe on each foot had a 14 inch (35 cm) sickle-like claw and the other toes had smaller claws. When alive, this claw would have been sheathed in a horny, keratinous material much like our fingernails, making the claw even bigger, longer and sharper.

NAME: Meaning - Troodon means "wounding tooth"
Pronounced - TROH-o-don
Named By - Joseph Leidy
When Named - 1856
DIET: Carnivore (meat-eater)
SIZE: Length - 6.5-11.5 ft (2-3.5 m) long
Height - 3 ft (1 m) tall at the hips
Weight - 110 pounds (50 kg)
WHEN IT LIVED: Late Cretaceous period, about 76-70 million years ago
WHERE IT LIVED: Fossils have been found in Canada (Alberta) and USA (Montana and Wyoming), North America.
FOSSILS: The first Troödon fossil was discovered by Ferdinand V. Hayden in 1855. Many teeth, 20 skeletons, and elongated eggs (some located in dirt nests) with embryos have been found.
CLASSIFICATION: Kingdom Animalia (animals)
Phylum Chordata (having a hollow nerve chord ending in a brain)
Class Archosauria (diapsids with socket-set teeth, etc.)
Order Saurischia - lizard-hipped dinosaurs
Suborder Theropoda - bipedal carnivores
Tetanura - advanced theropods with three fingers
Infraorder Coelurosauria - lightly-built fast-running predators with hollow bones and large brains
Family Troodontidae - the smartest dinosaurs with large eyes and grasping hands (eg. Troödon, Borogovia, Hepasteornis, Paronychodon, Saurornithoides, Sinornithoides, and Tochisaurus). They may have been omnivores.
Genus Troodon
Species T. formosus (type species named by Leidy, 1856)

INTERESTING
FACTS: Troodon may have been the smartest dinosaur, having the largest brain in proportion to its body weight (as smart as a modern bird). It was a fast-moving, light-weight predator that walked on two long legs. It had serrated teeth, long, slim jaws, and a stiff tail.

NAME: Meaning - Einiosaurus means "buffalo lizard" (einio comes from the Blackfoot Indian word for buffalo)
Pronounced - eye-nee-o-SAWR-us
Named By - Scott Sampson
When Named - 1995
DIET: Herbivore (plant-eater)
SIZE: Length - roughly 20 feet (6 m) long
Height - about 6.6 ft (2 m) tall at the hips
Weight - about 2 tons
WHEN IT LIVED: Late Cretaceous period, about 84-71 million years ago
WHERE IT LIVED: Fossils have been found at the Two Medicine Formation, Montana, United States, North America.
FOSSILS: 3 Einiosaurus skulls have been found.
CLASSIFICATION: Kingdom Animalia (animals)
Phylum Chordata (having a hollow nerve chord ending in a brain)
Class Archosauria (diapsids with socket-set teeth, etc.)
Order Ornithischia - bird-hipped dinosaurs (plant-eaters)
Suborder Marginocephalia - (meaning "fringed heads")
Infraorder Ceratopsia (also called Ceratopia)
Family Centrosaurinae (rhino-like ceratopsians)
Genus Einiosaurus
Species E. procurvicornis (type species named by Sampson, 1995)

INTERESTING
FACTS: Einiosaurus had a long, forward-curving snout horn, two large bony-horns on its neck frill (and many smaller ones), and bony ridges over the eyes. Einiosaurus was probably a herding animal, like the other ceratopsians. T. rex probably ate dinosaurs like Einiosaurus.

NAME: Meaning - Saltopus means "hopping foot"
Pronounced - SAL-to-pus
Named By - Friedrick von Huene
When Named - 1910
DIET: Carnivore (meat-eater) - it may have eaten mostly insects
SIZE: Length - 2 ft (0.7 m) long
Height - 8 inches (20 cm) tall at the hips
Weight - 2 pounds (1 kg)
WHEN IT LIVED: Late Triassic period, about 225-222 million years ago
WHERE IT LIVED: Fossils have been found in Scotland, Europe.
FOSSILS: Only a very incomplete, poorly-preserved fossil (including part of the skull) of Saltopus has been found.
CLASSIFICATION: Kingdom Animalia (animals)
Phylum Chordata (having a hollow nerve chord ending in a brain)
Class Archosauria (diapsids with socket-set teeth, etc.)
Order Saurischia - lizard-hipped dinosaurs
Suborder Theropoda - bipedal carnivores
Genus Saltopus
Species elginensis (type species named by von Huene, 1910) - Saltopus is a nomen dubium (not enough is known about it to be sure that it is a separate species or if it is even a dinosaur at all)

INTERESTING
FACTS: Saltopus may have been a very early dinosaur. It was small, lightly-built dinosaur that walked on two legs. It had light, hollow bones, and a long head with dozens of small, sharp teeth. Saltopus has five fingers on its hands, but the fourth and fifth digits were very small.

NAME: Meaning - Wuerhosaurus means "lizard from Wuerho, China"
Pronounced woo-EHR-ho-SAWR-us
Named By - Dong Zhiming
When Named - 1973
DIET: Herbivore (plant-eater)
SIZE: Length - 27 ft (8.1 m) long
Height - 6 ft (1.8 m) tall at the hips
Weight - about 4 tons
WHEN IT LIVED: Early Cretaceous period, about 135-120 million years ago
WHERE IT LIVED: Fossils have been found in Xinjiang, China, Asia.
FOSSILS: A partial fossil (without a complete skull) has been found.
CLASSIFICATION: Kingdom Animalia (animals)
Phylum Chordata (having a hollow nerve chord ending in a brain)
Class Archosauria (diapsids with socket-set teeth, etc.)
Order Ornithischia - bird-hipped dinosaurs
Suborder Thyreophora - armored dinosaurs
Family Stegosauria - plated dinosaurs
Genus Wuerhosaurus
Species W. homheni (type species named by Dong, 1973)

INTERESTING
FACTS: Wuerhosaurus was a stegosaurid (related to Stegosaurus) that had bony, rounded plates along its back and 4 bony spikes at the tip of its tail (thagomizers). It had a shorter body and wider hip bones than other stegosaurids.

NAME: Meaning - Othnielia was named as a tribute to the paleontologist Othniel C. Marsh
Pronounced - OTH-NEE-lee-ah
Named By - Galton
When Named - 1977
DIET: Herbivore (plant-eater) - it ate soft, low-lying plants
SIZE: Length - 4 ft (1.1 m) long
Height - 1 ft (30 cm) tall at the hips
Weight - 50 pounds (22.5 kg)
WHEN IT LIVED: Late Jurassic period, about 156-145 million years ago
WHERE IT LIVED: Fossils have been found in Colorado, Utah, and Wyoming, in the USA, North America.
FOSSILS: Partial skeletons plus some teeth have been found.
CLASSIFICATION: Kingdom Animalia (animals)
Phylum Chordata (having a hollow nerve chord ending in a brain)
Class Archosauria (diapsids with socket-set teeth, etc.)
Order Ornithischia - bird-hipped dinosaurs
Suborder Ornithopoda
Family Hypsilophodontidae (gazelle-like, herbivorous, herding dinosaurs)
Genus Othnielia
Species O. rex (type species named by Marsh, 1877 - originally called Nanosaurus)

INTERESTING
FACTS: Othnielia was a very small, fast-running, bipedal dinosaur.

NAME: Meaning - Pinacosaurus means "plank lizard"
Pronounced - PIN-ah-co-SAWR-us
Named By - Charles Gilmore
When Named - 1933
DIET: Herbivore (plant-eater)
SIZE: Length - 18 ft (5.5 m) long
Height - 2 ft (60 cm) tall at the hips
Weight - ?
WHEN IT LIVED: Late Cretaceous period, about 81-85 million years ago
WHERE IT LIVED: Fossils have been found in Mongolia, Asia.
FOSSILS: Over 35 incomplete fossils have been found, many in large bonebeds, indicating that Pinacosaurus may had roamed in herds.
CLASSIFICATION: Kingdom Animalia (animals)
Phylum Chordata (having a hollow nerve chord ending in a brain)
Class Archosauria (diapsids with socket-set teeth, etc.)
Order Ornithischia - beaked, bird-hipped dinosaurs that were plant-eaters
Suborder Thyreophora - armored dinosaurs
Superfamily Ankylosauria - tank-like dinosaurs covered with bony plates
Family Ankylosauridae - with tail clubs
Genus Pinacosaurus
Species P. grangeri (type species named by Gilmore, 1933)

INTERESTING
FACTS: Pinacosaurus was a medium-sized, armored, beaked, quadruped with a slender build. It had a tail club, bony spikes along its back and tail, but didn't have armor on its snout. Pinacosaurus had flared nostrils, four large hoof-covered toes on its front feet and five toes on each of its rear feet.

NAME: Meaning - Corythosaurus means "helmet lizard"
Pronounced - ko-RITH-o-SAWR-us
Named By - Barnum Brown
When Named - 1914
DIET: Herbivore (plant-eater), perhaps eating pine needles, conifers, ginkgos, seeds, cycads, twigs, and magnolia leaves.
SIZE: Length - 30-33 feet (9-10 m) long
Height - 6.6 feet (2 m) tall at the hips
Weight - about 5 tons
WHEN IT LIVED: Late Cretaceous period, about 80 to 65 million years ago
WHERE IT LIVED: Fossils have been found in western North America, including Montana, USA, and Alberta, Canada.
FOSSILS: Corythosaurus was named by Barnum Brown in 1914 from a fossil found in Alberta, Canada. Fossils have been found, including ten skulls, other assorted bones, and fossilized skin with a pebbly texture.
CLASSIFICATION: Kingdom Animalia (animals)
Phylum Chordata (having a hollow nerve chord ending in a brain)
Class Archosauria (diapsids with socket-set teeth, etc.)
Order Ornithischia - bird-hipped dinosaurs
Suborder Ornithopoda
Infraorder Iguanodontia - having spiked thumbs
Superfamily Hadrosauroidea - duck-billed dinosaurs
Family Lambeosaurinae - hollow-crested duckbills
Genus Corythosaurus
Species C. casuarius (type species named by Barnum Brown, 1914)

INTERESTING
FACTS: Corythosaurus had a hollow, bony crest on top of its long head in the shape of a helmet flattened on the sides. This duck-billed dinosaur walked and ran on two legs, and was a relatively fast dinosaur. It may have gone on all fours to forage for low-lying plants.