User blog comment:Mingaba/About Pachyrhinosaurus in JW:FK.../@comment-28196799-20171231194638/@comment-34030923-20180101175922

Hmm, lets see... Patrick Crowley, one of the producers of Fallen Kingdom, seen at the end of the trailer, said that quote not one time, but rather two times; one in the Behind-The-Scenes footage, and the other in that Snapchat video (where the producers confirmed Rexy, Blue, Mosasaurus, Baryonyx, Carnotaurus, and Stygimoloch). So we can expect at least more than 17.

Also, there was a total of 260 individuals, according to a reply in UltraMegaDude.