- Pleurodont; teeth solid, sometimes (Ophiosaurus) grooved; anterior part of tongue emarginate and retractile into the posterior portion; osteoderms on the body, and especially on the head where they are roofing over the temporal fossa; entirely zoophagous and ovo-viviparous.
In this respect cassowaries and emeus hold an intermediate position, their occasional zoophagous (especially piscivorous) inclination being well known.
Ciconiae.-Zoophagous, nidicolous, waders; with simple hypotarsus and without cervical apteria.
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