The epidermis on the right belong to a thick skin
A: Epidermis
B: Dermis (papillary layer)
The layers of the epidermis are clearly defined on the thick skin:
1: the stratum corneum
2: the stratum lucidum
3: the stratum granulosum
4: the stratum spinosum
5: the stratum basale (= stratum germinativum)
The epidermis of the thin skin does not have a stratum lucidum, and the four layers existing (stratum corneum, granulosum, spinosum and basale) are harder to distinguish.