The ichthyosaurs were a distinct lineage of marine reptiles from the time of the dinosaurs.  Superficially, they looked like a cross between a dolphin and a fish.  They were reptiles, yet their propulsion mechanisms superficially resembled fish in terms of fins and tails.  They also resembled mammals in that they gave birth to live young instead of laying eggs like other reptiles.  We can see this from fossils which sometimes capture the fully formed skeleton of a juvenile inside its mother.  This aspect of their nature is known from the mid Triassic forward,[1] which is a likely indicator that ichthyosaurs possessed this trait from the beginnings of their origins, since they don't go back much further than the mid Triassic.  Another clade of marine reptiles, the nothosaurs, might have also given birth rather than laying eggs.[2] 

            The threefold mixture of fish anatomy, reptile ancestry, and a mammal-like reproductive system may indicate that the genome of the ichthyosaurs was comprised of a successful splicing and dicing of fish and mammal DNA with reptilian DNA.  The fact that ichthyosaurs suddenly emerged without any known ancestors makes the notion of a frankenstein fish all the more likely.  Click to read more about fossil frankensteins.

The creationist narrative in Genesis 1 is contradicted by many ancient Christian texts.  Instead of an Almighty Creator God, ancient Christian texts espouse that the universe is born from blind arrogance and stupidity.  The angels caused evolution to occur from species to species.  There are many gods, (or aliens?), and the Christian God is just one among them.  Satan the Devil writes scripture, and thus the Bible was polluted with Genesis 1.  Archaeology and modern scholarship demonstrate that Genesis is indeed corrupted.  Cavemen walk with Adam and Eve.  Esoteric prophecies reveal the coming of Christ, and also reveal the dark forces that govern the cosmos.  Such are the ancient Christian writings.

Science vindicates the truth of these ideas.  Evolution often happens too fast for Darwin’s theory.  Gaps in the fossil record indicate that some kind of unnatural force acts together with natural selection.  Astrobiology reveals that intelligent life probably evolved long before us.  The fossil record reveals strange clues that aliens abducted species and transported them across oceans, and that DNA from diverse lineages was combined to spawn hybrid species.  Evidently, aliens influence evolution, and they are the gods of the world’s religions. 

This is not fiction.  All these facts are thoroughly documented in the links above.