Epidendrosaurus (Greek for "lizard in the tree"); pronounced EP-ih-DEN-dro-SORE-us
Epidendrosaurus (Matt Martyniuk)
Habitat:
Woodlands of Asia
Historical Period:
Late Jurassic (150 million years ago)
Size and Weight:
About 6 inches long and one pound
Diet:
Probably omnivorous
Distinguishing Characteristics:
Tiny size; long arms with clawed hands
Epidendrosaurus:
Archaeopteryx gets all the press, but there's a convincing case to be made that Epidendrosaurus was the first reptile to be closer to a bird than to a dinosaur. This pint-sized
theropod was less than half the size of its more famous cousin, and it's a sure bet that it was covered with feathers. Most notably, Epidendrosaurus appears to have been adapted to an arboreal (tree-dwelling) lifestyle--its small size would have made it a simple matter to hop from branch to branch, and its long, curved claws were likely used to pry insects from tree bark.
So was Epidendrosaurus really a bird rather than a dinosaur? As with all of the feathered "
dino-birds," as these reptiles are called, it's impossible to say. It's better to think of the categories of "bird" and "dinosaur" as lying along a continuum, with some genera closer to either extreme and some smack in the middle.
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Bob Strauss is a freelance writer and book author; one of his specialties is explaining scientific concepts and discoveries to both a lay and professional audience.
Bob Strauss is the author of two best-selling question-and-answer books that range across the expanse of science, biology, history and culture: The Big Book of What, How and Why (Main Street, 2005) and Who Knew? Hundreds & Hundreds of Questions & Answers for Curious Minds (Sterling Innovation, 2007).