Jan Evert Musch, AB 18 (1987) and AB 20 (1990) articles / m)neolart
Identified as Neolithic stone sculptures, TRB culture.
The author places tiny ideograms next to artifacts to indicate his identification of motifs: female figurines, male and female heads/portraits, various zoomorphs, including a horsehead.
Illustration © Siemen Dijkstra. Musch, J. E. (1990b). Continuation picture book: Stone sculptures Pliocene-Neolithicum. Archaeologische Berichten 20:85-107. Elst, NL. Page 106.