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.
Today’s selected anniversaries:
Mongol–Jin War: The Mongols captured Kaifeng, the capital of
the Jin dynasty, after besieging it for months.
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.
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.
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.
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.
Wiktionary’s word of the day:
(uncommon) Possible to avoid; avertible.
Wikiquote quote of the day:
Great perils have this beauty, that they bring to light the
fraternity of strangers.
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