Phasmid Eggs

It has long been the question "the chicken or the egg?". So I would like to say....."the Phasmid or the egg?".
Which came first? Was the Phasmid present first and then the egg? All I know is that when the first adults died, all I had left was 21 eggs. If I didn't have those 21 eggs I am not sure if either of the two breeding groups would have survived.

Figure 1
Figure 2

The above pictures (figures 1 to 3) of phasmid eggs are from left to right: 

1. Description of morphological features from Clark 1976

2. Photograph of eggs with ruler showing size 

3. Scanning electron microscope (SEM) photograph taken by Microscopy Unit Macquarie University in 2016

Figure 3

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