PGS Daily Dinosaur – Raptorex kriegstenis

Here’s another two-fer: a look at the outer appearance and the internal skeleton of the Raptorex kriegstenis, from Gregory S. Paul’s The Princeton Field Guide to Dinosaurs. The detailed illustrations allow us to see the dinosaur’s long legs and well-developed leg muscles, perfect for pursuing and ambushing prey at high speeds. Scroll down to read more about Raptorex or click here to see more Daily Dinosaurs!

This image is taken from The Princeton Field Guide to Dinosaurs by Gregory S. Paul. It may not be reproduced elsewhere without permission.

This image is taken from The Princeton Field Guide to Dinosaurs by Gregory S. Paul. It may not be reproduced elsewhere without permission.

Raptorex kriegstenis
2.7 m (9 ft) TL, 70 kg (150 lb)
FOSSIL REMAINS Majority of skull and skeleton.
ANATOMICAL CHARACTERISTICS Standard for derived tyrannosaurs.
AGE Early Cretaceous, probably Barremian.
DISTRIBUTION AND FORMATION Northeast China-Mongolia border; probably lower Yixian.
NOTES Exact location and formation of discovery not certain. Shows that small-armed, gracile tyrannosaurs
evolved by the late Early Cretaceous, that the emphasis of the head as the killing weapon to the exclusion of the arms in gracile forms was retained by the juveniles of later, larger species, and the presence of small arms in an agile predator shows that arm reduction is not evidence of scavenging in larger tyrannosaurs.

Comments

  1. Cursos Forex says:

    Incredible this Raptorex, brother of that impresive Tyrannosaurs…