| OR | extinct order of jawless vertebrates |
|---|---|
| OR | comprises a single genus: Andreaea |
| OR | elongate fishes with pelvic fins and girdle absent or reduced |
| OR | sucking lice |
| OR | small aquatic crustaceans lacking a carapace: fairy shrimps |
| OR | ducks |
| OR | hornworts |
| OR | frogs, toads, tree toads |
| OR | includes chiefly saprophytic fungi typically with shelflike bodies |
| OR | an order of Amphineura |
| OR | elongate fishes with pelvic fins and girdle absent or reduced |
| OR | swifts |