"'Feejee Mermaid' has become the generic term for the many fake mermaids that can be found around the world..."
This article contains information relating to a hoax. According to Cambridge dictionary a hoax is "a plan to deceive a large group of people; a trick."
Hippocerf (Greek:"horse-deer"), is a creature from medieval times said to have combination of horse and deer.
Some researchers believe that the Hippocerf may have actually been a rare surviving species of Megaloceros, or “Irish Elk” which is thought to have become extinct approximately 11,000 years ago during the last major European Ice Age. Fossilized specimens of the Megaloceros, complete with gigantic antlers to match, have been discovered throughout Europe, and some mainstream scientists now believe that as small breeding population of Hippocerf could have survived into historic times.
The Hippocerf is described as a regular deer, sometimes covered in more hair based on the region, with thick, giant antlers as shown in the picture. They have the same build as a deer but with a few equine features, such as the leg structure or the flank region.