Formerly /u/Zagorath on the alien site.

  • 128 Posts
  • 2.86K Comments
Joined 3 years ago
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Cake day: June 15th, 2023

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  • Zagorath@aussie.zonetoScience Memes@mander.xyz🍺 🍻
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    1 day ago

    Yup. Birds are reptiles! If you want to define a monophyletic clade that includes crocodiles and lizards, there is no way to do that without also including birds. To define a clade, you take the evolutionary tree and make a “cut” somewhere on it. Everything below that cut is part of the same clade, you can’t selectively remove some branches but not others, unless it’s by changing where you make your single cut.

    So in this diagram:

    Clade diagram of all tetrapods, including amphibians, mammals, and groups of reptiles including tuatara, lizards, snakes, turtles, crocodilians, and birds. The diagram has a green circle around the reptiles other than birds, labelled "reptiles". "A" is labelled at the last common ancestor (LCA) of all mammals. B at the LCA of all amniotes (mammals & reptiles), and C at the LCA of all reptiles, including birds.

    The green circle notwithstanding, you would usually define reptile as a cut at the “C” on the diagram. You could put the cut at Lepidosauria, but that would mean crocodiles and turtles are no longer considered reptiles either.

    A more zoomed-in look would show that after crocodiles and birds branched apart, you also get another branch where pterosaurs branch away from dinosaurs, and that birds are one of many branches and subbranches of dinosaur.



  • Zagorath@aussie.zonetoScience Memes@mander.xyz🍺 🍻
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    1 day ago

    Sure, but we’re having this conversation in 2025, after phylogenetic classification has long since taken over as the way we describe the relations between species.

    Birds are unambiguously reptiles.

    Mammals are not reptiles, but are the most closely-related animals to them.


  • Zagorath@aussie.zonetoScience Memes@mander.xyz🍺 🍻
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    2 days ago

    as far apart as you are from a reptile

    That would mean…not very. Reptiles are an extremely broad and diverse group, containing everything from penguins and crocodiles to tuataras and pythons. Mammals are the most closely-related extant clade that is generally not considered “reptile”, to reptiles.

    Arachnids, on the other hand, are more distantly related to insects. Crustaceans form their closest relatives, followed by myriapods (centipedes & millipedes). Only then do arachnids appear.


  • Zagorath@aussie.zonetoScience Memes@mander.xyz🍺 🍻
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    2 days ago

    Ok but “bug” has multiple meanings, and almost nobody means “hemiptera” when they say it. More commonly, it’s any terrestrial arthropod. Arachnids are bugs. Centipedes are definitely bugs.

    Heck, there’s a broader definition that basically includes all arthropods. “Moreton bay bugs” are a popular food this time of year. And they’re a kind of lobster.


  • Zagorath@aussie.zonetoScience Memes@mander.xyz🍺 🍻
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    2 days ago
    Transcription

    Three Tweets, each replying to the previous.

    By “you’re right, i’m wrong” @OkBu…:

    what kind of beer do spiders drink? bug lite

    By “Mentally Healthy” @EAT_ROAD…:

    bad joke, spiders are not bugs only insects of the order hemiptera classified as bugs and spiders aren’t even insects. maybe if you drank fewer beer and spent more time studying you would know that but it’s your life

    by “you’re right, i’m wrong” @OkButStill:

    they eat bugs you big dumb bitch










  • in most countries that would be solved by good regulations

    Quite likely both, actually. Good regulations help reduce the chance of it happening, but if it does happen, damage is done. Regulations might mean they receive a fine, but that doesn’t make the victim of their negligence whole. Medical bills aren’t all there is to it. There’s the cost of pain and suffering. Probably time off work. (And having good leave policies doesn’t necessarily help, because now that’s leave she’s used for this that she can’t use if she later needs to for another reason.) Cost of repair/cleaning the car. Lawsuits would still happen.

    And anyway, I’m not defending American anti-regulation bs. I’m defending people’s right to sue companies that wronged them. In the absence of good regulations protecting consumers, suing a company that did the wrong thing isn’t “absolute chaos”. There is no “absolute chaos of lawsuit nonsense”. That is corporate propagandistic bullshit.