Making a guest appearance in the film are Shiro Sano (Godzilla 2000, Kamen Rider Heisei Generations) and former AKB48 member Rie Kitahara (Terrace House, Majisuka Gakuen) as Valma and Yuno, the ancestors of the Ryusoulgers.
Kishiryu Sentai Ryusoulger the Movie: Time Slip! Dinosaur Panic is set for a July 26th release.
[Source: Tokunation, Ryusoulger Twitter]