Page 125 - The Dinosaur Book and Other Wonders of the Prehistoric World (DK-Smithsonian)

Unusually, Falcarius Falcarius
had some pointed teeth
in the front of its jaws that
it may have used to
catch small animals.
Alxasaurus Therizinosaurus

Erlikosaurus

The jaws were lined
with more than 100
small teeth, adapted
for shredding leafy food.

Falcarius is the most primitive
known therizinosaur; it lived about
126 million years ago.

Fossils of Enigmosaurus,
Erlikosaurus had long meaning “riddle lizard,” were
foot claws that may have unearthed in Mongolia.
helped it defend itself. Enigmosaurus

The tails of all
therizinosaurs
were relatively short.
Alxasaurus is named
after the Alxa Desert of
Mongolia, where its
fossils were found in
the early 1990s.
Alxasaurus
The arms probably had
long feathers similar to Like all
those of birds. therizinosaurs,
Enigmosaurus had
long arms and hands.

filaments, making therizinosaurs like leafy branches within reach of their mouths.
Erlikosaurus look as though they had dense fur. But they could also have used their claws as
Their long arms had big hands equipped with formidable weapons against predators. With
huge claws—those of the giant Therizinosaurus their bulky bodies, therizinosaurs could not
are the longest claws of any known animal. The move quickly, so fighting may have been their
therizinosaurs may have used their claws to haul best form of self-defense. 123

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