Heterodontosaurus was a dinosaur of the Early Jurassic, 200–190 million years ago. It was named in 1962 after a skull fossil was discovered in South Africa. The genus name means "different toothed lizard", in reference to its unusual heterodont dentition, including small, incisor-like teeth in the upper jaw, followed by long, canine-like tusks. Additional specimens have been found, including an almost complete skeleton in 1966. Though it was a small dinosaur, Heterodontosaurus was one of the largest members of its family, reaching between 1.18 m (3.9 ft) and possibly 1.75 m (5.7 ft) in length, and weighing between 2 and 10 kg (4.4 and 22.0 lb). The body was short with a long tail. The five-fingered forelimbs were long and relatively robust; the hind-limbs were long, slender, and had four toes. The skull was elongated, narrow, and triangular when viewed from the side. The front of the jaws were covered in a keratinous beak. (Full article...)

Destruction of the S-1 satellite

• ... that a power failure resulted in the destruction of the Juno II launch vehicle (pictured) carrying the Explorer S-1 satellite, five seconds after its launch?
• ... that Gujarati writer Mafat Oza published his own elegy in his poetry collection Ashubh?
• ... that New York City's Jacob Riis Park contained the world's largest paved parking lot when it was constructed?
• ... that Clara Schumann noted in her diary in 1853 that her husband was very happy about completing his Märchenerzählungen, fairy-tale music for piano, clarinet, and viola?
• ... that Fredrik Önnevall, who speaks fluent Chinese, was Sveriges Television's first correspondent in Beijing and provided commentary for the opening ceremony of the 2008 Summer Olympics?
• ... that there are multiple ways to switch antipsychotics?
• ... that Leslie Webster spent her entire career at the British Museum?
• ... that according to legend, The Lady Bushranger "escaped from custody while in a locked toilet aboard a moving train"?

Mark Williams

• A dam failure in Kenya kills at least 47 people and leaves more than 2,000 others homeless.
• American retailer Walmart announces a deal to acquire the Indian electronic commerce company Flipkart for about US$16 billion.
• Mark Williams (pictured) defeats John Higgins to win the World Snooker Championship in Sheffield, England.
• The InSight spacecraft and its companion MarCO cubesats are successfully launched towards Mars.
• In American horse racing, Justify – ridden by jockey Mike Smith – wins the Kentucky Derby.

May 12: Jerusalem Day in Israel (2018)

The Duke of Guise during the Day of the Barricades

• 1588 – Day of the Barricades: Under the leadership of Henry I, Duke of Guise (pictured), Catholic Parisians arose in protest against the moderate policies of Henry III.
• 1888 – North Borneo was established as a British protectorate.
• 1968 – The 1st Australian Task Force began the defence of Fire Support Base Coral in the largest unit-level action of the Vietnam War for the Australian Army.
• 1998 – Four students were shot and killed at Trisakti University in Indonesia, leading to widespread riots and eventually the fall of Suharto.
• 2008 – In Postville, Iowa, U.S. Immigration and Customs Enforcement conducted the largest-ever raid of a workplace and arrested nearly 400 immigrants for identity theft and document fraud.

Fergus of Galloway (d. 1161) · Johann Baptist Wanhal (b. 1739) · Yogi Berra (b. 1925)