Actuall;y, I do not think that every organism on earth is a result of specific creation. It is possible that some groups developed genetically, within their group of sorts. In other words, fish did not eventually evolve to become elephants.
For instance:
Polycephaly - Wikipedia.
But to agree with the fossil record, those 'special creations' have to be distributed throughout time and be different for each group of animal or plant.
So, for example, the 'special creation' for dog-like animals was after that for the various types of dinosaur and was at a different time than thr 'special creation' for different primates.
Here's the problem. The scientists that *originally* studied these things expected to see evidence of a flood and special creation. They quickly realized the actual evidence doesn't support either.
Their fallback position became an assumption of multiple catastrophes with the flood simply being the last. This allowed for very different animals between the various catastrophes while allowing for stasis for each species.
But then they realized that was also not consistent with the actual evidence. Different types of animal arose at different times, but there were no catastrophes evident separating them AND the times for the appearance of different 'types' didn't match any particular time sequence.
This was why scientists originally realized that species are not static: they do, in fact, change over time.