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Re: POSSIBLE FUNCTION OF ORDERLY RINGS OF DINO EGGS? (Was Re: Pubic Pendulum]
> This is even more fascinating when
> considering the size of the egg-layer and elongate eggs from China.
> Can you think of any other examples of
> concentric rings of eggs that are known to be non- theropod in nature?
> is also assuming that all the "rings" in China and Mongolia are
> and kin, instead of protoceratopsian.
AFAIK, ironically not a single protoceratopsian egg is known, they are all
oviraptorosaurian, based on egg shell morphology: Birds and oviraptorosaurs
have so-called ornithoid eggshell. *Troodon* has a different (though not too
dissimilar) type called dinosauroid-prismatic.
There are ornithoid eggs like *Macroelongatoolithus* that are around
40 cm in length. This should point to enormous oviraptorosaurs. There are
eggs claimed to be segnosaurian; these have a totally different eggshell
type... have to look it up, AFAIK it's called dendrolithic.