Fetal Ovaries.
Comparison between the fetal ovaries from a 5 month old fetal filly with those of a normal anestrous adult mare at the top. The tan colored portion is the medulla, the dark brown area the cortex near the hilum.
Roberts SJ (1972)
Fetal Filly - 120 Days.
120-day old female fetus showing the anus and external genitalia. The ultrasonographic appearance of the clitoris and its position relative to the anus are used in fetal gender determination between days 120 and 240.
King AC (2008)
Fetal Filly - 120 Days.
This is an image of a 120 day female fetus showing the mammary glands with small teats and the clitoris just below the base of the tail. These criteria are used in determining fetal gender between days 120 and 240, via trans-abdominal ultrasonography.
King AC (2008)
Fetus - 5 Months Old.
5-month old fetus [size of the tile is 15 cm square].
McEntee K (1972)