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1987. Chimpanzee (Pan troglodytes), female with her twin offspring. Ink drawing. Published in: Geissmann, T., 1989: Multiple births in catarrhine monkeys and apes - A review. Il Sedicesimo, Firenze. 78 pp. ISBN 88-85342-02-7 | 1987. Bonnet macaque (Macaca radiata), female that adopted two infants of her group, in addition to her own infant. Ink drawing. Published in: Geissmann, T., 1989: Multiple births in catarrhine monkeys and apes - A review. Il Sedicesimo, Firenze. 78 pp. ISBN 88-85342-02-7 | 1987. Rhesus macaque (Macaca mulatta), adult females with adopted infants. Ink drawing. Published in: Geissmann, T., 1989: Multiple births in catarrhine monkeys and apes - A review. Il Sedicesimo, Firenze. 78 pp. ISBN 88-85342-02-7 | March 1988. Capped gibbons (Hylobates pileatus), family group; preparatory pencil sketch. | March 1988. Capped gibbons (Hylobates pileatus), family group; final ink drawing. Published as cover of Folia Primatologica (Karger Publ.) Vols. 50-52 (1988-1989) |
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1981. Siamang (Symphalangus syndactylus). Water colours, colour pencils and ink. | ![]() Okay, it's not an animal, but I did not want to create a new page for this single flower painting. |
June 1985. Siamang (Symphalangus syndactylus). Pencil sketches, partially inked. | 1987. Crab-eating macaque (Macaca fascicularis), female with her twin offspring. Ink drawing. Published in: Geissmann, T., 1989: Multiple births in catarrhine monkeys and apes - A review. Il Sedicesimo, Firenze. 78 pp. ISBN 88-85342-02-7 |
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1975. Birdwing butterfly (Troides sp.). Water colours, colour pencils and ink. |