Stegoceras, a pachycephalosaurid (dome-headed) dinosaur, lived in what is now North America during the Late Cretaceous period, about 77.5 to 74 million years ago. (This genus is unrelated to Stegosaurus, which lived more than 70 million years earlier.) Small and bipedal, Stegoceras was about 2 to 2.5 metres (6.6 to 8.2 ft) long and weighed around 10 to 40 kilograms (22 to 88 lb). It had a rigid vertebral column and a stiffened tail. The pelvic region was broad, perhaps due to an extended gut. The skull was roughly triangular with a short snout, topped by a thick, broad, and relatively smooth dome. The skull jutted out in the back over the occiput, and had a thick ridge over the eyes. The teeth were small and serrated. The skull is thought to have been flat in juvenile animals, growing into a dome with age. The dome may have been used for combat, display, or recognition. Specimens have been found in the Dinosaur Park and Oldman Formations in Alberta, and the Fruitland and Kirtland Formations in the US.
Read more: https://en.wikipedia.org/wiki/Stegoceras
_______________________________ Today's selected anniversaries:
1233:
Mongol–Jin War: The Mongols captured Kaifeng, the capital of the Jin dynasty, after besieging it for months. https://en.wikipedia.org/wiki/Mongol_siege_of_Kaifeng
1815:
Napoleon Bonaparte escaped from Elba (return pictured), an island off the coast of Italy, where he had been exiled after the signing of the Treaty of Fontainebleau one year earlier. https://en.wikipedia.org/wiki/Napoleon
1914:
HMHS Britannic, the third and largest Olympic-class ocean liner of the White Star Line after RMS Olympic and RMS Titanic, was launched at the Harland and Wolff shipyard in Belfast. https://en.wikipedia.org/wiki/HMHS_Britannic
1935:
With the aid of a radio station in Daventry, England, and two receiving antennas, Scottish engineer and inventor Robert Watson-Watt first demonstrated the use of radar. https://en.wikipedia.org/wiki/Robert_Watson-Watt
2008:
In the first significant cultural visit from the United States to North Korea since the Korean War, the New York Philharmonic Orchestra performed in East Pyongyang Grand Theatre. https://en.wikipedia.org/wiki/2008_New_York_Philharmonic_visit_to_North_Korea
_____________________________ Wiktionary's word of the day:
evitable: (uncommon) Possible to avoid; avertible. https://en.wiktionary.org/wiki/evitable
___________________________ Wikiquote quote of the day:
Great perils have this beauty, that they bring to light the fraternity of strangers. --Les Misérables https://en.wikiquote.org/wiki/Les_Mis%C3%A9rables