Guttered Nasal Sill

Please answer and provide pictures because i tried to do it but i m not quite sure of what it is.

Guttered nasal sill.

The sutural pattern is considered as a non adaptive feature. Guttering is described as a gradual sloping of the nasal floor which occurs from the vomer to the vertical surface of the maxilla. Guttered 0 incipient guttering 1 straight 2 a partial sill 3 and a complete sill 4. And i would like a picture showing a blurred sharp guttered if possible.

Majority of skulls had complex skull sutures which is an asian feature. Like what is meant by a blurred nasal sill or a sharp nasal sill or guttered nasal sill. However there were a few crania which showed black features which are guttered nasal sill quonset nasal bridge and wide nasal opening. Determining ancestry from skeletal remains is a difficult task and it is becoming more and more complicated as interracial mixing becomes more common.

I want pictures or just a very good description. Incipient guttering is similarly defined but the sloping commences more anteriorly to the maxilla. Nasal features caucasoid mongoloid negroid. I want to know what a nasal sill looks like.

In whites the nasal aperture is long and narrow with a high bridge and a sharp nasal sill the lower edge of the nasal aperture projects sharply outwards.