Icon painting / Ikonfestészet: Holy Trinity Icon (NewTestament Trinity - Paternity) / Szentháromság-ikon (Újszövetségi Szentháromság

Paternity (Otechestvo). Vertical, antropomorph representation of Persons of the Holy Trinity.
Paternitás (Otyecsesztvo). A Szentháromság Személyeinek antropomorf, vertikális ábrázolása.

Novgorod, 14th c.

Lit.: Bigham, Steven, Image of God the Father in Orthodox Theology and Iconography, Studies in Orthodox iconography, St Vladimir's Seminary Press, 1995, ISBN 1879038153, 97818790381.

http://en.wikipedia.org/wiki/Holy_Trinity_Icon#cite_note-0
The New Testament Trinity, depicts the Father, the Son and the Holy Spirit distinctly, and although far more familiar from Western models, and now disapproved of in Russian Orthodoxy at least, is actually of Greek origin. Christ may be shown either as an adult, (in this case he is sitting to the right of his Father) or as an infant sitting on his Father's knees, which is the norm in early Greek depictions. This type is also called the Paternity icon, and is found from the 11th century onwards, although it did not become widespread in Orthodox art until after the Fall of Constantinople, under Western influence, when an adult Christ is the norm.[1] The Father is painted as the Ancient of Days, a white-bearded man with a very special type of nimbus (it contains two rombic figures: one is red, another is blue, or is a triangle).