Lambeosaurus is a genus of hadrosaurid dinosaur that lived about 76 to
75 million years ago, in the Late Cretaceous period (Campanian) of
North America. This bipedal/quadrupedal, herbivorous dinosaur is known
for its distinctive hollow cranial crest, which in the best-known
species resembled a hatchet. Several possible species have been named in
Canada, the US, and Mexico, but only the two Canadian species are
currently recognized as valid. The various skulls assigned to the type
species L. lambei are interpreted as showing age differences and sexual
dimorphism, including some juvenile fossils previously thought to belong
to a genus of dwarf hadrosaur. Lambeosaurus was closely related to the
better known Corythosaurus, which is found in slightly older rocks, as
well as the less well-known dinosaurs Hypacrosaurus and Olorotitan. All
had unusual crests, which are now generally assumed to have served
social functions like noisemaking and recognition. Lambeosaurus was
belatedly described in 1923 by William Parks, over twenty years after
the first material was studied by Lawrence Lambe, after whom the
dinosaur is named.
Read more: <https://en.wikipedia.org/wiki/Lambeosaurus>
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Today's selected anniversaries:
1794:
The United States and Great Britain concluded the Jay Treaty,
the basis for ten years of peaceful trade between the two nations.
<https://en.wikipedia.org/wiki/Jay_Treaty>
1863:
American Civil War: U.S. President Abraham Lincoln delivered
the Gettysburg Address at the dedication of the Soldiers' National
Cemetery in Gettysburg, Pennsylvania.
<https://en.wikipedia.org/wiki/Gettysburg_Address>
1943:
The Holocaust: Inmates at the Janowska concentration camp near
modern Lviv, Ukraine, staged a failed uprising, after which the SS
liquidated the camp, resulting in at least 6,000 deaths.
<https://en.wikipedia.org/wiki/Janowska_concentration_camp>
1977:
TAP Portugal Flight 425 crashed while attempting to land at
Madeira Airport in Funchal, Madeira, killing over 130 people on board.
<https://en.wikipedia.org/wiki/TAP_Portugal_Flight_425>
2010:
The first of four explosions occurred at the Pike River Mine in
the West Coast Region of New Zealand in the nation's worst mining
disaster in nearly a century.
<https://en.wikipedia.org/wiki/Pike_River_Mine_disaster>
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Wiktionary's word of the day:
omega:
1. The final letter of the Greek alphabet.
2. (idiomatic) The end; the final, last or ultimate in a series.
<https://en.wiktionary.org/wiki/omega>
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Wikiquote quote of the day:
Four score and seven years ago our fathers brought forth on
this continent, a new nation, conceived in Liberty, and dedicated to the
proposition that all men are created equal. Now we are engaged in a
great civil war, testing whether that nation or any nation so conceived
and so dedicated, can long endure. We are met on a great battle-field of
that war. We have come to dedicate a portion of that field, as a final
resting place for those who here gave their lives that that nation might
live. It is altogether fitting and proper that we should do this. But,
in a larger sense, we can not dedicate, we can not consecrate, we can
not hallow, this ground. The brave men, living and dead, who struggled
here, have consecrated it, far above our poor power to add or detract.
The world will little note, nor long remember what we say here, but it
can never forget what they did here. It is for us the living, rather, to
be dedicated here to the unfinished work which they who fought here have
thus far so nobly advanced. It is rather for us to be here dedicated to
the great task remaining before us — that from these honored dead we
take increased devotion to that cause for which they gave the last full
measure of devotion — that we here highly resolve that these dead
shall not have died in vain — that this nation, under God, shall have
a new birth of freedom — and that government of the people, by the
people, for the people, shall not perish from the earth.
--Abraham Lincoln
<https://en.wikiquote.org/wiki/Abraham_Lincoln>