[zeugma]

I know I’m going to get flamed for this, because I don’t even believe it myself, but a lot of these really huge creatures would make more sense if gravity was less in the far distant past.

[VeritatisSplendor]

Gravity wasn’t weaker, but the atmosphere was thicker.

[Fred Nerks]

http://www.bearfabrique.org/Catastrophism/sauropods/biganims.html

Megafauna and the attenuated gravity of the antique system.