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Inverted cone bur

Inverted cone bur

a rotary cutting instrument in the shape of a truncated cone with the smaller end attached to the shaft; generally used for entering carious pits or creating undercuts in cavity preparations.


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Re: Evolution of sexual reproduction

... at the top and diversifies down to species level. The so-called "inverted cone of diversity." As stated above, the fossil record shows a hierarchical “topdown” ...

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by JackBean
Tue Aug 24, 2010 7:13 am
 
Forum: Evolution
Topic: Evolution of sexual reproduction
Replies: 29
Views: 33071

Re: Evolution of sexual reproduction

... at the top and diversifies down to species level. The so-called "inverted cone of diversity." As stated above, the fossil record shows a hierarchical “topdown” ...

See entire post
by jevg
Mon Aug 23, 2010 10:03 pm
 
Forum: Evolution
Topic: Evolution of sexual reproduction
Replies: 29
Views: 33071


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