Acrocanthosaurus is a genus of theropod dinosaur that existed in what
is now North America during the Aptian and early Albian stages of the
Early Cretaceous. Like most dinosaur genera, Acrocanthosaurus contains
only a single species, A. atokensis. Its fossil remains are found
mainly in the U.S. states of Oklahoma and Texas, although teeth
attributed to Acrocanthosaurus have been found as far east as Maryland.
Acrocanthosaurus was a bipedal predator, best known for the high neural
spines on many of its vertebrae, which most likely supported a ridge of
muscle over the animal's neck, back and hips. Approaching 12 meters
(40 ft) in length, and weighing up to 6.17 metric tons (6.8 short
tons), it was the largest theropod in its ecosystem and likely an apex
predator, possibly preying on large sauropods and ornithopods.
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Today's selected anniversaries:
The Book of Mormon, the defining sacred text of the Latter Day Saint
movement, was first published.
Jonas Salk announced the successful test of his polio vaccine on a
small group of adults and children.
A group of peasant women in Chamoli district, Uttarakhand, India, used
their bodies to surround trees in order to prevent loggers from felling
them, giving rise to the Chipko movement.
By signing the Egypt–Israel Peace Treaty, Egypt became the first Arab
country to officially recognize Israel.
An explosion allegedly caused by a North Korean torpedo sank the South
Korean warship ROKS Cheonan, killing 46 sailors.
Wiktionary's word of the day:
seam allowance (n):
(sewing) That part of the material or fabric added to the dimensions of
a sewing pattern outside the seam
Wikiquote quote of the day:
I have kept hidden in the instep arch
Of an old cedar at the waterside
A broken drinking goblet like the
Under a spell so the wrong ones can't find it,
So can't get saved,
as Saint Mark says they mustn't.
(I stole the goblet from the children's playhouse.)
Here are your
waters and your watering place.
Drink and be whole again beyond confusion.
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