Eggs are eggs whether live birth or in an egg shell.
Egg came first. Where did the original egg cell came from is more significant question/mystery?
This goes back to origins of biologic life. We already know that left-handed amino-acids exist in celestial objects that impact Earth?
So the questions become where does the coding for biologic life originate?
There is one scientist who attempted to recreate pressures found with celestial impacts on Earth. She place some basic organic molecules in a shell and fired them into a lab sand pit to create these pressures and she go the opposite of what she expected.
She expected to see those molecules become a disorganized mess and instead she got more complex molecules.
If were to take this scenario out to its most extreme pressures ex black hole, we can envision a scenario where the most complex biologic life coding we know to exist, humans, could be coding found within and on event horizon surface of black holes.
The area of the four, internal hexagonal great circles of a spherical, cubo{6}-octa{8}hedron are equal to outer surface area of the conceptual spherical.
RNA-DNA in a spiral patterning could be a clue.
Four bases, with 5th alternate, used in RNA could be a clue.
64 codon triplets { triangulation } could be a clue.
Perhaps there exist a spiral relationship between the outer surface of a black hole and the internal stuff.
In this scenario we see the great hexagonal circles of the spherical cubo-octahedron as being 3D spiral patterns likened to a slinky toy.
/////////////////////////////////////// slinky toy profile where top is outer-surface of black hole and bottom is inside the black hole.
Top = gravity as outer seemingly 2D surface pulling INward via geodesic trajectory going IN
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
Bottom = dark energy, internal to black hole, pushing OUTward via geodesic trajectory going OUT
This is just simplistic beginnings for what could be a much more complex set of overlapping spiral patterns with black hole phenomena.
Most extreme pressures create most complex organisms of Universe/God?