3 Fossils That Are Definitely Eggs. But What Are Their Species?

[-Andy-]

Hi all. I am stumped. Here there are three supposed eggs from China, not all of them are mine. While it would be simple enough to lump them all as "Hadrosaur Eggs" or "Dendroolithus", I want to give it another shot at getting their proper ID.

I have consulted several experts in the field, including Tom Kapitany, Mike Holmes, Laogao of China etc...

Egg 1:

Opinions so far is that this may be an egg from Henan Province of China, but it does not look like the common hadrosaur egg, and Mike H after handling it, is very certain it is not.

This egg is supposedly unhatched. It measures exactly 5" in diameter

[-Andy-]

Egg 2:

This egg measures 4 inches in diameter. Opinions so far are split between it being a common Hadrosaur egg, or it being another smaller species.

It comes either from Jiangxi Province, Guangdong P, or Henan.

Egg 3:

This egg measures 4.75" in diameter. Opinions so far are split between it being a common Hadrosaur egg, or it being another smaller species.

It comes either from Jiangxi Province, Guangdong P, or Henan.

Egg 2 and 3 together:

At the moment, I really want to find out: Are all three eggs of the same species?

[Auspex]

I do not know how to identify dinosaur eggs, other than by rough comparison to known types. I do know, however, that fossil eggs really are ichnospecies, and that most cannot be identified as to the layer with any certainty; the associations to the remains of known genera are very, very rare.

[-Andy-]

I do not know how to identify dinosaur eggs, other than by rough comparison to known types. I do know, however, that fossil eggs really are ichnospecies, and that most cannot be identified as to the layer with any certainty; the associations to the remains of known genera are very, very rare.

True.

Only those with embryonic remains such as Oviraptors can be conclusively determined.

My primary concern at the moment, is whether the eggs above are of the same type. I believe egg 1 at least, is not. But I would like a second or third opinion.