|Emil Selenka (27 February 1842 - 21 January 1902|
|Pregnant uterus of Hylobates agilis (rafflei) showing the decidua |
capsularis (d.c.) reproduced by Hill (here) from Selenka
I have shown this image before to document that gibbons resemble other great apes in having a decidua capsularis. Thus implantation is interstitial as it is in the human.
|Fetus of Hylobates muelleri (Müller's Bornean Gibbon) and|
uterus of Nomascus concolor (Black Crested Gibbon) from Selenka
Selenka amassed a large number of specimens and kept the skeletons as well as the reproductive tracts. He felt the maximum information should be gained from the animals that lost their lives. One recent study (here) estimates that Hubrecht may have bagged as many as 400 orangutans between 1892 and 1895.