For instance, a Pangea-like singular ocean surround one giant continent is basically described in Gwn 1:9 which says, "all the waters under heaven were gathered together into one place."
And God said, Let the waters under the heaven be gathered together unto one place,
and let the dry land appear: and it was so.
The ninth verse describes the first appearance of land whatsoever which is followed by the emergence of land plants. That may be consistent with what one would expect in the natural world, but it doesn't support your idea that this passage is about Pangea.
The first plants emerged during the end of the Ordovician period into the Silurian period. Jawed and bony fish also developed at this time.
At that time the supercontinents were Gondwana and Laurasia (someone may want to fact check the accuracy and completeness of this assertion regarding the continents other than Gondwana).
The Panthalassa Ocean covered most of the northern hemisphere, but was not the only ocean and was bordered by the Proto-Tethys Ocean to the south, seperated from Panthalassa by island arcs and Kazakhstania.
By the time that Gondwana and Laurasia came together to form Pangea as a single continent and the Tethys became part of Panthalassa as you suppose Gen 1:9 refers to, plants were well established.
In summary, here is the order of the emergence of these:
1) Sun and Moon (4.5 billion years ago)
2) Animals (620-550 mya during the Vendian Period)
3) Plants (Ordovician period 450 mya)
4) A single supercontinent (300 million years ago)
And here is your order:
1) A single supercontinent (Gen 1:9)
2) Plants (Gen 1:11)
3) Sun and Moon (Gen 1:16)
4) Animals (Gen 1:20)
As far as science is concerned, your order is way off.
