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Is the vestigial organ argument a vestige of poor science

Subduction Zone

Veteran Member
They aren't bony fish, Osteichthyes. But they are cartilaginous fish, Chondrichthyes. Both are considered to be fish.

https://en.wikipedia.org/wiki/Fish
https://en.wikipedia.org/wiki/Osteichthyes
https://en.wikipedia.org/wiki/Chondrichthyes

All are considered to be jawed vertebrates (Gnathostomes).

Your first Wiki link does point out that "fish" is a paraphyletic group. Which of course only confuses the issue a bit. We are more closely related to bony fishes than sharks are yet they are fish and we are not, unless one uses a monphyletic classification system, in which case we would also be reptiles.
 

Polymath257

Think & Care
Staff member
Premium Member
Your first Wiki link does point out that "fish" is a paraphyletic group. Which of course only confuses the issue a bit. We are more closely related to bony fishes than sharks are yet they are fish and we are not, unless one uses a monphyletic classification system, in which case we would also be reptiles.


Yep. word usage is, well, rather random.
 

Subduction Zone

Veteran Member
Whale fishery, say. Here is another fish.

https://www.google.com/search?q=ww2..._AUIDCgD&biw=851&bih=595#imgrc=HxnoFbnrZcUqIM:

Strange as it may seem, sharks have been seen in
a similar maneuver, releasing a remora.
This article excludes sharks from "fish" unfortunately it includes tetrapods in that classification:

http://www.biodiversityinfocus.com/blog/2012/04/20/dipterist-files-willi-hennig/

upload_2018-7-24_10-55-55.png
 
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