Strauss F
Am J Anat. 1978 May;152(1):99-109. doi: 10.1002/aja.1001520107.
The process of nidation of Microcebus murinus may be subdivided into several stages (preadhesion, apposition, attachment and invasion), as is indicated for protracted phases of preimplantation. Not until the apposition stage does the inner cell mass orient itself orthomesometrially, while concurrently a nidation plaque develops in the abembryonal trophoblast that overlies and resorbs the coalescent glands. During the subsequent adhesion stage, the paraembryonal, bilaminar omphalochorion becomes attached to the uterine epithelium, with focal resorption of the latter. In addition, chorionic vesicles begin to develop. In the meantime, the embryonic disc has lost its trophoblastic cover as a preliminary to the formation of the pleuramnion. The formation of a nidation plaque, together with the subsequent central implantation of Microcebus, suggests a close relationship to Loris tardigradus, characterizing the mode of implantation of Strepsirhini. The nidation plaque and its invasive capacity, giving rise to a syndesmochorial placental nucleus, provide a placentological link to Galago demidovii.
小嘴狐猴的着床过程可细分为几个阶段（预黏附、对合、附着和侵入），这与着床前的延长阶段情况相符。直到对合阶段，内细胞团才会以正位方式定位自身，与此同时，在覆盖并吸收融合腺的胚外滋养层中会形成一个着床斑。在随后的黏附阶段，胚外双胚层卵黄绒毛膜附着于子宫上皮，同时子宫上皮出现局灶性吸收。此外，绒毛膜泡开始发育。与此同时，胚胎盘已失去其滋养层覆盖，这是形成羊膜的前奏。着床斑的形成以及小嘴狐猴随后的中央着床，表明其与懒猴存在密切关系，这是原猴亚目着床模式的特征。着床斑及其侵入能力形成了一个带状绒毛膜胎盘核，在胎盘学上与德氏婴猴建立了联系。
