| suborder | primitive saurischian dinosaurs |
|---|---|
| suborder | shorebirds: plovers |
| suborder | used in some classification systems |
| suborder | widespread group including duck-billed dinosaurs and their early relatives (hadrosaurs |
| suborder | broadbills |
| suborder | red corals and sea fans |
| suborder | red corals and sea fans |
| suborder | true bugs |
| suborder | extinct group of armored jawless fishes or fishlike vertebrate |
| suborder | plant lice (aphids) |
| suborder | lampreys as distinguished from hagfishes |
| suborder | hagfishes as distinguished from lampreys |