👉 Elasmotherium is a term used in biology to describe an organism that has two sets of arms, one set being attached to the body and the other to the head. This type of arm is called a mesoderm, which is the intermediate layer between the endoderm (the outermost layers) and the ectoderm (the innermost layers). The two sets of arms are connected by a network of connections that allow for movement and attachment. Elasmotherium can be found