After Sibley & Monroe, 1990
<==o Motmotidae (motmots; momotit) [6/9]
|-- †Protornis glarniensis
|-- Hylomanes momotula (pikkumomotti)
|-- Aspatha gularis (sinikurkkumomotti)
|--o Electron (leveänokkamomotit) [2]
| |-- E. carinatum (kanamomotti)
| `--o E. platyrhynchum (leveänokkamomotti)
| |-- E. p. platyrhynchum (Broad-billed Motmot)
| `-- E. p. pyrrholaemum (Plain-tailed Motmot)
|-- Eumomota superciliosa (mustakurkkumomotti)
|--o Baryphthengus (punamomotit) [2]
| |-- B. ruficapillus (punamomotti)
| `-- B. martii (amazonianmomotti)
`--o Momotus (sinipäämomotit) [2]
|-- M. mexicanus (kastanjamomotti)
`--o M. momota (sinipäämomotti)
|-- M. m. coeruliceps (Blue-crowned Motmot)
|-- M. m. lessonii (Lesson's Motmot)
|-- M. m. subrufescens (Tawny-bellied Motmot)
|-- M. m. momota (Blue-diademed Motmot)
`-- M. m. aequatorialis (Highland Motmot)
Reference(s):
Olson, S. L., 1985: The fossil record of birds. 79-239.
in Farner, D., King, J. & Parkes, K. (eds.), 1985: Avian Biology. vol VIII.
–Academic Press, New York. 1985.
Sibley, C. G. & Monroe, J., BL. 1990: Distribution and taxonomy of birds of the world.
–Yale University Press, New Haven & London, 1990. XXIV-1111.