The skin is a 2-part organ. Epidermis originates from ectoderm. Dermis originates from mesoderm.
Pigment cells originate from neural crest cells which migrate into skin.
An ectodermal tissue called the periderm is present in the young fetus. Present in all amniote embryos during early development. May exchange water, ions,and glucose with amniotic fluid. During later fetal life, the ectoderm gives rise to a true epidermis and mesenchyme becomes the dermis. The periderm disappears.