Vitamin A Palmitate is the form of vitamin A naturally found in animal sources and it is also produced synthetically, unfortunately it appears to be produced from oils, in particular palm oils. Plant sources of vitamin A are carotenoids. 

https://www.livestrong.com/article/468186-what-is-vitamin-a-palmitate/

It is certainly a tricky world out there. :-)

There are a lot of people discussing this online:

https://www.google.com/search?q=vegan+Vitamin+A+Palmitate

Sean