The Mythical Species Erasure Theory is the speculation created by author/occultist S Rob: real name Simon Robson: that Cynocephaly and some other beings of Myth and Legend are not seen as they once were: on our Earth and our same plane of existence/reality: and that they lived physically as we do now. But also that we exist in a reality of many planes of existence and many intelligent species and that we have the power collectively to create and erase entire species: usually without being aware we are doing it: and that was the cause of the erasure of the dog headed men Cynocephaly. The theory also means also that if humanity is not powerful enough and does not continually move forward in all ways then that is its fate: erasure. However he also states that some beings may not have been erased but exist in very small numbers in some other reality. It also states that humanity needs to command magical beings: beings such as mermaids, Ra the sun god, fae: and not worship them to increases the power humanity has and so lessens the chance of humanity being erased. It should be noted that Cynocophaly or dog headed men were seen by Marco Polo and have many reported sightings and in the past their existence was thought to be self evident. This theory has been stated in many of S Rob's books. The author/occultist S Rob also states that humanity needs to expand to all of space and all planes of existence to secure our continual existence. This idea also means that there is not any clear creator of all and that we all can create and destroy what exists. It does mean that we all need to push humanity forward or cease to exist. The idea was first proposed by the author/occultist S Rob: born Simon Robson born 1975. Occultist and Author S Rob in 2015. The idea was popularized in many of his the books.