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Helicoprion ("Spiral Saw") was a long-liced genus of shark-like cartilaginous fish that fist arose in the oceans of the late Caboniferous 280 million years ago, survied the Permian-Triassic Extiction Event, and eventually went extinct during the early Triassic some 225 million years ago. The only known fossils are the teeth, which were arranged in a fantastic "tooth-whorl" strongly reminiscent of a circular saw.
http://en.wikipedia.org/wiki/Helicoprion
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What is a whorl?
A whorl is a group of concentric circles.
What is a nape whorl?
A Whorl is a section of hair that grows in a circular pattern. A nape whorl is a whorl of hair that grows at the nape of the neck, whorls can also grow on one's crown.
When was Desmoulin's whorl snail created?
Desmoulin's whorl snail was created in 1849.
When was Buckquoy spindle-whorl created?
Buckquoy spindle-whorl was created in 1970.
What forms the outermost whorl of flower parts?
Whorl is a short stalk where the important parts of a flower are attached. The outermost part attached on the whorl is the calyx that is made of sepals.
What actors and actresses appeared in Whorl - 2010?
The cast of Whorl - 2010 includes: Chris Keener
What is the difference between a loop and a whorl fingerprint?
That a loop is curved and a whorl is shaped like a wave.
How many percent of people have whorl as a fingerprint?
Approximately 30% of people have a whorl pattern in their fingerprints.
What are the different types of fingerprint?
there are three different types of fingerprints. arch, loop, and whorl.
What are the release dates for Ode to the Whorl - 2005?
Ode to the Whorl - 2005 was released on: USA: 6 June 2005
What is nape whorl?
A nape whorl is like a double crown except it is located at the nape (bottom, back of the hair but not on the hairline).
What is the name for a circle in a fingerprint?
a whorl
