The phrase "also existed on" is correct and usable in written English.
It can be used to indicate that something was present or occurred in addition to something else, typically in a historical or comparative context.
Example: "The ancient civilization also existed on the banks of the river, thriving alongside others in the region."
Alternatives: "also appeared in" or "also was present on".
The narwhal has a single horn (actually a giant protruding tooth) and if unicorns existed in the sea, went the argument in medieval times, surely they also existed on land.
Bubbles also existed on the surface of sample, and the coatings were found delaminating from the steel substrate clearly.
The distributions of low-level water vapor show that a humid region also existed on the eastern side of the rainfall regions in both members #004 and #007 and that more water vapor was supplied to the rainfall regions in #004 than in #007 (Fig. 12c, d).
Limited information also existed on the tensions and interactions between the bio-medical recommendations and the socio-cultural and economic dimensions of infant feeding.
There also exist on-line databases with such information like Allmusic, (http://www.allmusic.com/).
Deep poverty also exists on many Indian reservations, such as the one in Blackwater, Ariz., where the median income is just $18,000.
They need to conceive of ideas within their business models that align with their existing brand promises but that can also exist on their own.
Some differences also exist on the type of stroke and pre-existing co-morbidity of hypertension.
It brings out all those UFO and buzzard-circling fears, along with more reasonable ones about your car breaking down". Monotony also exists on the southernmost stretch of Florida's Highway 1 through the Florida Keys.
Important debate also exists on the extent that psychological factors, as opposed to sociological ones play in formation of radicalization: "Radicalization has been approached as a psycho-social process of gradual progress from context, to thought, and finally to action.
Their churches also exist on sufferance.
