👉 Pedinophyllopsis is a term used in comparative anatomy to describe the process by which certain tissues are separated from each other during embryonic development, often leading to the formation of a single layer or column. This separation occurs at specific stages within the developing embryo, such as the stage when the inner lining of the placenta develops into the amniotic cavity, and it is characterized by the formation of a single, thin, round cell called the peduncle.