you are viewing a single comment's thread
view the rest of the comments
[–] 8 points 6 days ago* (last edited 6 days ago) (6 children)

If it makes you feel better, I hold that the proper term is Archosaur, which covers Dinosaurs, Crocodilians, and Birds. And cladistically, in terms of common ancestors, birds are and have always been reptiles.

Also, Re: the Pluto thing: what you should really be angry about is that the only reason the Moon doesn't qualify as a planet is because the IAU specifically excludes it. By all the rules, the moon would at least qualify as a binary planet with Earth, because the moon's orbit around the sun never actually crosses itself. It describes an orbit basically the same shape as the earth's. If Pluto, Ceres, and Eris aren't planets, then Luna definitely is, or their rules are not consistent.

E: removed an innacuracy. See commenter below.

  • source
  • parent
  • hideshow 6 child comments
  • [–] 5 points 6 days ago (1 child)

    The Earth-Moon barycenter is below the surface of Earth, not outside Earth's body.

    https://en.wikipedia.org/wiki/Barycenter_(astronomy)

  • source
  • parent
  • hideshow 1 child comment
  • [–] 4 points 6 days ago* (last edited 6 days ago)

    Ah, thanks, I thought I'd read that it was outside, but didn't feel like doing the math to confirm in that second. I'll edit it!

    E: Ah, I have figured out what it was: the Sun-Jupiter barycentre is outside the surface of the sun, and that's why the Barycentre is a bad metric. Different argument.

  • source
  • parent
  • [–] 3 points 6 days ago (2 children)

    I hold that the proper term is Archosaur, which covers Dinosaurs, Crocodilians, and Birds.

    Does that include gila monsters and komodo dragons?

  • source
  • parent
  • hideshow 2 child comments
  • [–] 3 points 6 days ago* (1 child)

    No, actually, Gila monsters and komodo dragons, as Anguimorphs are, like snakes and lizards, likely to be somewhat closely-related to ancient Mosasaurs, but no other famous mesozoic creatures.

  • source
  • parent
  • hideshow 1 child comment