| | Artiodactyla (Site not responding. Last check: 2007-11-07) |
 | | By the late Eocene (46million years ago), the three modern suborders had already developed: Suina (the pig group); Tylopoda (the camel group); and Ruminantia (the goat and cattle group). |
 | | The camelids and the Ruminantia, on the other hand, tend to be longer-legged, to have only two toes, to have more complexcheek teeth well-suited to grinding up tough grasses, and multi-chambered stomachs. |
 | | Not only are their digestive systems highlydeveloped, they have also evolved the habit of chewing cud: regurgitating part-digested food to chew it again and extract themaximum possible benefit from it. |
| www.therfcc.org /artiodactyla-60193.html (388 words) |