Ornithere: Difference between revisions
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"Ornithere" (and the taxon name ''Ornitheria'') means bird-beast and stems from the bird-like appearance of the group. It is common for the names of sauceback taxa to end in ''-therium''.
The name "jewel-eyed sauceback" stems from one of their unique
==Anatomy==
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Ornitheres and their close relatives have limited up-down flexibility in their mandibles, unlike other saucebacks, as the muscles used to pivot the jaws up and down in other groups instead pull them together for a powerful bite. This gives strong-jawed species a superficially heart-shaped head, due to the powerful muscles bulging outwards.
The oral
Ornitheres lack the lips that are present in other saucebacks, as their jaws, so much larger than the pincer-like jaws of more basal saucebacks, completely took over the role of closing the mouth; the lips only got in the way. This comes at a cost; some species cannot close their jaws fully because of secondary adaptations, so their mouths are exposed to open air and more prone to water loss.
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==References==
{{Reflist}}
[[Category:Common Names]]
[[Category:Group Overviews]]
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