DACENTRURUS
DASPLETOSAURUS
DATOUSAURUS
DEINOCHEIRUS
DEINODON
DEINONYCHUS
DICERATOPS
DICRAEOSAURUS
DILOPHOSAURUS
DIPLODOCUS
DRACOPELTA
DRAVIDOSAURUS
DROMAEOSAURUS
DROMICEIOMIMUS
DRYOSAURUS
DRYPTOSAURUS
DYSLOCOSAURUS
DYSTYLOSAURUS
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DRACOPELTA
Pronunciation: dray-ko-PEL-tah 
Translation: Small Shield Dragon
Also known as:
Description: Herbivore, Quadrupedal
Order: Ornithischia
Suborder: Thyreophora
Infraorder: Ankylosauria
Family: Nodosauridae
Height: 2.5 feet (0.8 meters)
Length: 7 feet (2.1 meters)
Weight:
Period: Late Jurassic
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Notes: Discovered in western Portugal, Dracopelta is one of the
earliest ankylosaurs discovered thus far. It was equipped with five
different types of armor.
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DRAVIDOSAURUS
Pronunciation: dra-VID-uh-SAWR-us
Translation: Dravidanadu Lizard
Also known as:
Description: Herbivore, Quadrupedal
Order: Ornithischia
Suborder: Thyreophora
Infraorder: Stegosauria
Family: Stegosauridae
Height: 4 feet (1.2 meters)
Length: 10 feet (3 meters)
Weight: 2,000 pounds (907 kg)
Period: Late Cretaceous
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Notes: Discovered in India, Dravidosaurus is the only stegosaur
known from the Late Cretaceous Period, near the end of the
Age of Dinosaurs. Its back plates were thin and triangular in shape.
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DROMAEOSAURUS
Pronunciation: DROH-mee-uh-SAWR-us
Translation: Swift Lizard
Also known as:
Description: Carnivore, Bipedal
Order: Saurischia
Suborder: Theropoda
Infraorder: Tetanurae
Micro-order: Maniraptora (of the microorder Coelurosauria)
Family: Dromaeosauridae
Height: 2.5 feet (0.8 meters)
Length: 6 feet (1.8 meters)
Weight: 100 pounds (45.4 kg)
Period: Late Cretaceous
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Notes: This dinosaur was discovered in 1914 in the United States.
It had razor-sharp teeth and 3 inch (7.6 cm) eagle-like claws on
the inner toe of each foot. Dromaeosaurus was first of the
sickle-clawed dinosaurs to be discovered.
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DROMICEIOMIMUS
Pronunciation: dro-MEE-see-o-MYE-mus
Translation: Emu Mimic
Also known as:
Description: Carnivore, Bipedal
Order: Saurischia
Suborder: Theropoda
Infraorder: Tetanurae
Superfamily: Ornithomimosauria (of the microorder Coelurosauria)
Family: Ornithomimidae
Height: 6 feet (1.8 meters)
Length: 11 feet (3.4 meters)
Weight: 220 pounds (99.8 kg)
Period: Late Cretaceous
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Notes: Discovered in Alberta, Canada, Dromiceiomimus was
probably one of the most intelligent dinosaurs of the Cretaceous
Period, with a brain larger than that of an ostrich. It was also a
swift runner, capable of speeds up to 40 mph (64 km/h).
Its relatively weak jaws had no teeth, but as there is no evidence
that Dromicieomimus swallowed stones for use in digestion, it is
unlikely that it ate plants. Its hands are well-adapted for digging,
which suggests that it ate insects and eggs. Because of the large
size of its pelvic canal, Dromiceiomimus may have given birth to
its young, rather than laying eggs.
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DRYOSAURUS
Pronunciation: DRY-o-SAWR-us
Translation: Oak Lizard
Also known as: Dysalotosaurus
Description: Herbivore, Bipedal
Order: Ornithischia
Suborder: Ornithopoda
Infraorder: Iguanodontia
Family: Dryosauridae
Height: 5 feet (1.5 meters)
Length: 12 feet (3.7 meters)
Weight: 2,000 pounds (907 kg)
Period: Late Jurassic
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Notes: Dryosaurus had a toothless beak and teeth shaped like
oak leaves, made for grinding leaves. It also had five fingers on
each hand for gripping its food. Specimens have been found in
America, Europe and parts of Africa.
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DRYPTOSAURUS
Pronunciation: DRIP-tuh-SAWR-us
Translation: Tearing Lizard, or Wounding Lizard
Also known as: Laelaps
Description: Carnivore, Bipedal
Order: Saurischia
Suborder: Theropoda
Infraorder: Tetanurae
Micro-order: Carnosauria (not confirmed)
Family: Dryptosauridae
Height: 9 feet (2.7 meters)
Length: 20 feet (6.1 meters)
Weight: 3,000 pounds (1,360 kg)
Period: Late Cretaceous
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Notes: Dryptosaurus was the first meat-eating dinosaur to be
discovered in North America. Its most striking feature is the
8-inch (20-cm), talon-like claw with which each hand was
equipped. Although Dryptosaurus is generally pictured as
looking like Tyrannosaurus, recent thought makes it a
coelurosaur.
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DYSLOCOSAURUS
Pronunciation: diss-SLOH-kuh-SAWR-us
Translation: Bad Place Lizard
Also known as:
Description:
Herbivore, Quadrupedal
Order: Saurischia
Suborder: Sauropodomorpha
Infraorder: Sauropoda
Family: Diplodocidae
Height:
Length: 65.6 feet (20 meters)
Weight:
Period: Late Cretaceous
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Notes: Dyslocosaurus, discovered in Wyoming, is thought to
be the last of an unknown line of North American sauropods.
The possibility exists that its remains have been improperly
dated and that rather than being from the Late Cretaceous,
it is actually from the Late Jurassic.
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DYSTYLOSAURUS
Pronunciation: dih-STYE-luh-SAWR-us
Translation: Two Column Lizard
Also known as:
Description: Herbivore, Quadrupedaly
Order: Saurischia
Suborder: Sauropodomorpha
Infraorder: Sauropoda
Family:
Height:
Length:
Weight:
Period: Late Jurassic
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Notes: This large sauropod is known from a unique spinal
bone more than 3 feet (1 meter) tall. It may have resembled
Brachiosaurus.
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