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Happy Monkey!

posted by [personal profile] mylescorcoran at 11:01am on 12/02/2009 under , , ,
Happy Monkey, Mr Darwin, and thanks.

Embrace Your Inner Fish


(Image source: Ray Troll reproduced without permission but with great thanks.)
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There are 7 comments on this entry. (Reply.)
 

(no subject)

posted by [identity profile] alaimacerc.livejournal.com at 04:41pm on 12/02/2009
Nice piccy. Shame that "fish" is quite such a cladistically disreputable concept... Admittedly _Gnathostomata_ might have been a bit of a jawful. *rimshot/tumbleweed*
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mylescorcoran: (Default)

(no subject)

posted by [personal profile] mylescorcoran at 06:40pm on 12/02/2009
Cladistics snob!

Especially as you can be more specific as it's certainly Osteichthyes if not Sarcopterygii.
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(no subject)

posted by [identity profile] alaimacerc.livejournal.com at 02:27pm on 13/02/2009
I prefer "cladistics pedant", please. :)

My rationale (after the fact or otherwise...) would be that I was trying to be monophyletic (which rules out the first alternative), and to include all the fish (nixing the second).

Mind you, doesn't help with everything that has "fish" in the common name...
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mylescorcoran: (Default)

(no subject)

posted by [personal profile] mylescorcoran at 02:36pm on 13/02/2009
In what way is Osteichthyes not monophyletic? The phylum is Chordata, above both Gnathostomata and Osteichthyes.


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(no subject)

posted by [identity profile] alaimacerc.livejournal.com at 01:44pm on 14/02/2009
_Gnathostomata_ contains the _Osteichthyes_ anyway. Lancelets, sea squirts and hagfish (case in point about the "common name syndrome") are another kettle of, um, hot water. (Mrrmmmm, more tea...)

My understanding is that the _Osteichthyes_ are paraphyletic with respect to the tetrapods, as "traditionally" defined. I think that's fixable by either including those (in the spirit of "birds are dinosaurs/reptiles" and "human are apes"). Or perhaps by excluding the _Sarcopterygii_, though I think that just leaves the _Actinopterygii_, so it'd be somewhat redundant.
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(no subject)

posted by [identity profile] daftnewt.livejournal.com at 04:56pm on 12/02/2009
I recognise that fish!
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mylescorcoran: (Default)

(no subject)

posted by [personal profile] mylescorcoran at 06:36pm on 12/02/2009
Nice and scaley!
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