Laminar armour only of a breast-plate. While laminar armour was made from hardened seal leather and often knee long, or even longer. However late lamellar armour made from metal (iron or steel or even brass) and could be as long as laminar armour. Both lamellar and laminar armour usually were worn with a high collar (protecting neck and head) integral with one or two laminar pauldrons (used rather as shield than ordinary pauldron). This collar and its pauldrons usually were made from leather and wood. Usually at least one part of an armour (a pauldron) was laminar, but sometimes a pauldron was
Supernumerary body part considered to have lost much or all of their original function through evolution. These body parts can be classed as additional to the required functioning of the body. In human anatomy the vermiform appendix is sometimes classed as a vestigial remnant. Prosthesis is an artificial extension that replaces a body part, and cybernetics is the study of computer technology in relation to organisms which can include replacement or additional body parts. Body integrity identity disorder (BIID) is a psychiatric disorder in which a person thinks that they have one or more additional limbs than they should, despite having two arms