Final answer:
Natural facial markings include congenital features such as birthmarks and fingerprints. Lanugo is a fine hair that may be present on newborns, and other natural features include vernix caseosa and distinct body proportions. These traits are characteristic of a neonate at birth.
Step-by-step explanation:
Natural facial markings consist of the congenital markings present at birth. These markings can include features such as birthmarks, and the unique patterns made by fingerprints. Moreover, it is not uncommon for newborns to have soft, fine hair on their skin known as lanugo, which usually sheds within the first month after birth. Other notable features that may be present include the vernix caseosa, a waxy white substance coating the newborn's skin; head hair that can vary from full and thick to absent; and the distinct proportions of a newborn's body where the head is relatively large compared to the body.
The fontanelles, which are soft spots in the skull, are also natural occurrences that allow the head to change shape during birth and ossify later on. All these characteristics, including the more defined traits like fingerprints, are present from birth and are integral in identifying the neonate during the infancy stage.