One of the first questions I asked our tour guides at Little Petroglyph Canyon was if they knew where any petroglyphs like this might be. I was directed to this one.
The petroglyph below the rectilinear figure and above the green lichen is thought by many to look like a mammoth. I think it has possibilities but is sort of an ambiguous figure. The main problem I had with it was that it didn't look any more patinated that any of the other figures around it - though again this is a subjective judgement.
Clambering around the canyon alone, I did find this interesting petroglyph myself up near the north end.This may be a little difficult for you to see, partly because it did look very heavily patinated, therefore perhaps older, than the other petroglyphs around it. I have a cropped version here, that may make it easier to see.
I see an animal with an oval head in the upper left-hand corner of the frame, that has a long neck shown as a single line, connecting to a rectilinear body. The body has a flat back, four proportionally short legs, and a short, bobbed tail. I have asked a number of folks for their opinions, but I think this could represent some sort of camelid, likely a llama.
How does it look to you? I think the neck is too long and the legs and tail too short to be a horse. I think the back is too flat and the legs too short to be a camel.
Llamas were common here in California during the Pleistocene (as were camels), with two species, the stout-legged llama (Paleolama mirifica) and the large-headed llama (Hemiauchenia macrocephala) present in the Rancholabrean fauna. Both became extinct about 10,000 years ago - making this petroglyph at least that old if it represents one.
I sent this picture to a couple of people knowledgeable of Coso rock-art to check if they had seen it and what their opinion was but have not gotten a reply yet. A hundred feet or so down the canyon I saw this petroglyph.