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| | Malate Dehydrogenase Isozymes Provide a Phylogenetic Marker for the Piciformes (Woodpeckers and Allies) |
 | | The "wood- pecker-like" S-MDH pattern was absent from all six families of Coraciiformes, and from the two repre- sentatives of the Coliiformes (Table 1). |
 | | Phylogenetic relationships of the woodpeckers and allies have been the subject of intense debate (Simp- son and Cracraft 1981, Swierczewski and Raikow 1981, Olson 1983, Raikow and Cracraft 1983, Sibley and Ahlquist 1986). |
 | | In most traditional taxonomic lists, six families are included in the Piciformes: Galbuli- dae (jacamars), Bucconidae (puffbirds), Capitonidae (barbers), Indicatoridae (honeyguides), Ramphasti- dae (toucans), and Picidae (woodpeckers). |
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