Now it may be observed, that the following words natus and filius are spoken of animals, but genimen may be said of the fœtus before it is formed in the womb; the fruit of the palm trees is also called genimina, but that word is very seldom used with respect to animals, and when it is, always in a bad sense.
Reproduced in full. Translation: Oxford 1841 (Newman), public domain (Public domain).
Also cites: cont. Eunom. lib. 2.