- Joined
- Feb 16, 2005
- Messages
- 1,499
Crackypelma?
I saw a show about prehistoric inverts. I don't remember everything about what was said, but there was more to the conditions back then than just high oxygen content. There was also something about a size limit existing on their body plans due to the need for oxygen transport structures to fit through the joints of the appendages.
I saw a show about prehistoric inverts. I don't remember everything about what was said, but there was more to the conditions back then than just high oxygen content. There was also something about a size limit existing on their body plans due to the need for oxygen transport structures to fit through the joints of the appendages.