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Q. What is the lightest extinct dinosaur?

Top Ten Lightest Dinosaurs
1: EPIDEXIPTERYX (0.2 Kg)
2: PEGOMASTAX (0.5 Kg)
3: MICRORAPTOR (1.0 Kg)
4: ANCHIORNIS (1.0 Kg)
5: MAHAKALA (1.0 Kg)
6: RAHONAVIS (1.0 Kg)
7: JURAVENATOR (1.5 Kg)
8: HESPERONYCHUS (1.8 Kg)
9: ARCHAEOPTERYX (2.0 Kg)
10: MEI (2.0 Kg)
Chart compiled automagically by DinoChecker's Dyna-saur™ engine
If you glance to the right you will notice a top ten list of lightweight dinosaurs, plucked from our prehistoric database. If a dinosaur is added to the site with the appropriate strangle-hold-breaking stats this list will be updated automagically.

You're probably wandering why this page specifies lightest "extinct" dinosaur. The lightest actual dinosaur is the bee hummingbird weighing 1.8 grams and just over 5cm long - native to the Isle of Pines and Cuba where it lays the smallest eggs in the smallest nests. Their diddy wings flap to the tune of sixty beats a second - up to 200 for flirting males - and have so utterly mastered the art of flight that they never walk more than an inch or two. You know birds are dinosaurs, right?

Please bear in mind that all extinct dinosaur sizes are based on often shabby remains using the not strictly scientific method of "guestimation". We use the lightest estimations mentioned in print but paleontologist's opinions vary dramatically.
Recommended...
Steve Brusatte and Michael Benton (2008) "Dinosaurs." Quercus Publishing Plc.

             
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