Cayce reading 364-10 has this to say about the way in which early souls, in the days of Atlantis when souls were becoming entangled in Earthly materiality, would sometimes project themselves into animal forms. If such astoundingly unconventional activities did take place, could it just be possible that other non-composite entities might have depicted what these “therianthropic” forms looked like?
Here's the Cayce reading that allegedly describes the practice.
These, then, are the manners in which the ENTITIES, those BEINGS, those SOULS, in the beginning partook of, or developed. Some brought about monstrosities, as those of its (that entity's) association by its projection with its association with beasts of various characters. Hence those of the Styx, satyr, and the like; those of the sea, or mermaid; those of the unicorn, and those of the various forms - these projections of what? The abilities in the PSYCHIC forces (psychic meaning, then, of the mental AND the soul - doesn't necessarily mean the body, until it's enabled to be brought INTO being in whatever form it may make its manifestation - which may never be in a material world, or take form in a three-dimensional plane as the Earth is...
What is the present-day evidence of our conjectured practice of early souls projecting themselves into - and combining with - the various animals of the times in which they lived?
In an article dated 11/21/2001, by L. Dayton, of the New Scientist, the author reports on a survey of over 5000 prehistoric, rock-art therianthrope images from northern Australia, Europe, and South Africa. Antelope-human hybrids are among the creatures depicted. “They go back to the dawn of humanity, to the first fully modern people,” claims rock art expert Paul Taçon of the Australian Museum in Sidney. Dayton says that Taçon has found that in Australia and South Africa there are dozens of animal-headed people in rock paintings and carvings more than 10,000 years old. Some may be far older.
Therianthropes comprised about one per cent of the works studied; that is, they amounted to about 50 of the ancient carvings and paintings surveyed.