1182
What’s in a name? (i.imgur.com)
submitted 2 years ago by NotSpez@lemm.ee to c/curatedtumblr@sh.itjust.works
142 comments fedilink hide all child comments
you are viewing a single comment's thread
view the rest of the comments
[-] Strawberry@lemmy.blahaj.zone 1 points 2 years ago

Yes, fish would be a morphology that includes gills, fins, streamlined body shape for swimming, etc. But there is no good phylogenetic definition because all the animals we call "fish" do not form a monophyletic group. The monophyletic group encompassing all fish would include also mammals, reptiles including birds, and amphibians because these all have fish ancestors

[-] merc@sh.itjust.works 1 points 2 years ago

But there is no good phylogenetic definition because all the animals we call “fish”

The challenge was to come up with a group "which includes both trout and sharks but not humans". It seems like "gills" satisfies that pretty well.

[-] Strawberry@lemmy.blahaj.zone 1 points 2 years ago

Animals with gills do not form a monophyletic group.

this post was submitted on 29 Oct 2023
1182 points (96.5% liked)

Curated Tumblr

7210 readers
349 users here now

For preserving the least toxic and most culturally relevant Tumblr heritage posts.

Here are some OCR tools to assist you in transcribing posts:

Don't be mean. I promise to do my best to judge that fairly.

founded 3 years ago
MODERATORS
Apytele@sh.itjust.works
ethaver@kbin.earth