Size of a T-Rex egg

Hi there,
Does anyone know what was the size of a T-Rex egg, and what was the estimate weight of the newly hatched baby?

Thanks.

Sorry, TR, T. rex is EXTREMELY rare! No Nests have ever been found...yet! So, sorry, I can't answer that, though I wish I could.

In fact, EVEN Articulated skeletons are rare! We JUST found a juvenile and set the record straight on the classification of "Jane" and the "Cleveland skull," as Nanotyrannus lancensis!! "Sue" is the Largest and MOST complete (About 95%, wasn't it?) Tyrannosaurus rex specimen EVER found and the OLDEST ("She" lived to be 29 years of age.)

So, sadly, this also impacts the classification of this taxa and others within the Tyrannosaur family. (Thankfully, it doesn't affect the other Ceolurosaurs (the Dromaeosauridae, or "Raptors" ) It's just sooo darn FRUSTRATING!!

Say, are there any estimates the eggs size?
Must be something quite big - I'd guess several hundered pounds.

Not that I know of. There are some speculation, I'm sure, but nothing concrete. We DO know how fast a T. rex could grow and how old it was when it was full grown.

Based on that, we can get a pretty good estimation of the size of the egg. Although, hundreds of pounds? Uh...no. Infant rexes were about as large as a house cat, I think....or chicken.

Besides, the egg doesn't need to be huge. Just large enough to support the developing infant.

So, in that case the egg might be the size of an ostrich egg or somewhat smaller. Maybe the size of a penguin egg?

Fewww....
This is shocking to me!

LOL! It was to me too, believe me.

sorry, don't know the weight, but found out that eggs almost ready to hatch would have been about a foot long. hope it helpsxxx

It would seem to me that it would weigh about 5-12 lbs. The fossil of the egg would probably be about 50-90 lbs. depending on which minerals combined with the egg during it's fossilation. Minerals are constantly changing in this world, with higher numbers being converted by life forms to lower numbers to get the energy out of the chemical reaction. Maple trees convert Manganese to Chromium taking up energy in the process.

Rickymouse-

That's another fantastic point! The weights of the organisms in life were a bit lower than when it fossilized. It really depends on the minerals that replaced the tissue.

So, like I said above, all we have is speculation and nothing concrete.


Although, I'd like to touch up on the aforementioned data on Tyrannosaur eggs on the brink of hatching. Where was that obtained? I mean, I doubt there's any evidence found on a T. rex nest.....at least, none released to the public yet.

Besides, there's also no reliable way to identify the owner of the eggs. Hence, why the Oviraptor eggs found by Roy Chapman Andrews in the 1920s were thought to be Protoceratops eggs for nearly a century. Now we know that that this animal obtained his name for the wrong reason, though it really wasn't unreasonable at the time. That Oviraptor was protecting it's own eggs when it died in a sandstorm, proving that Theropods, especially the Coelurosaurs were exceptional parents.

If you fossilized a 1200 lb cow, basically replacing the water with chrystaline minerals, It would probably increase in weight to about 2100 lbs roughly. The egg white in an egg could increase to extremely high weights. The chances of finding a fossilized egg should be greater than a dinosaur. The egg white of a chicken egg resists bacteria with a high percentage of chlorine. Chlorine also has the ability to bind with minerals creating salts of the metalics of the minerals, weather it be silver chloride, mercuric chloride, zinc chloride, copper chloride, or any other metalics in the environment. This tied with the minerals that the yolk and white contain would give you quite a rock. I am just making a possible guess.

Rickymouse,

And, a very educated guess at that! You'd think that eggs would be more common, but nature RARELY, if ever, follows Human common sense. lol!

bigger than a chichen egg