radular tooth formula = ∞. 14. 27. 1. 27. 14. ∞

[eub]

http://en.wikipedia.org/wiki/Radula

Each row of radula teeth consists of

• one central tooth (or rachis tooth)
  
• on each side : one or more lateral teeth
  
• and then : one or more marginal teeth.

This arrangement of the teeth is expressed in a teeth formula, with the following abbreviations :

• R : designates the central tooth or the rachis tooth (in case of lack of central tooth : the zero sign 0)
  
• the lateral teeth on each side are expressed by a specific number or D, in case the outer lateral tooth is dominant.
  
• the marginal teeth are designated by a specific number or, in case they are in a very large numbers, the infinity symbol ∞

This can be expressed in a typical formula such as:

3 + D + 2 + R + 2 + D + 3

meaning : on each side 3 marginal teeth, 1 dominant lateral tooth, 2 lateral teeth and one central tooth.

This results in 7 basic types :
[...]

Comments

also, I shall make this t-shirt

[eub.livejournal.com]

[tylik.livejournal.com]

Heh. I've been hearing a lot about the radular stalk in Aplysia, as my roommate is working with them right now. (Lovely big neurons, but I still haven't decided if it fits my idea of interesting biomechanics...)

[beaq.livejournal.com]

Feeding activities of slugs on Myxomycetes and macrofungi

PDF, recently bookmarked. Pretty pictures. Would have liked more, bigger, but take what get.

Re: also, I shall make this t-shirt

[marzipan-pig.livejournal.com]

I want one! :)