A brief story outline has also been released:

"Before... There were knights who fought their archenemy 'Druidon" using the powers of ancient dinosaurs. They were called Ryusouger. They rode their partner dinosaurs, the Kishiryu, and the days of their fierce fight using the Ryusouls that house their souls unraveled.

-Present day after much time-

In peaceful world, the tremendous power of the Kishiryu has been sleeping, sealed away, but Doruidon's return draws near and the time to awaken is close... Now the curtain of a never before seen Super Sentai is cut down!"


the RyuSouls will grant various armor abilities based on which ones they use.

Now I have to know, were they around before or after the Zyulanders? Sentai's lore has greately expanded with Zyuohger.

That is not a road you want to put any serious thought into. Unless you're just asking for advice in fanfic ideas.

looking at it again...black's helmet sports a prominent rhinoceros-like horn, which makes me doubt if he is meant to be based of a Stegosaurus or any other stegosaurid for that matter.

That sounds very Zyuranger-ish to me

According to Darth Gonzo's findings Ryusou Black is based off of the Miragaia.
https://i.imgur.com/5VRHF0z.png

that doesn't seem to have a horn on its head though

Despite all the points about this being a blatant rehash of old ideas, and myself being disappointed about prehistoric animals and not dragons, none of this looks bad. I like the changers and the suits. The Ryu Souls and their armor modes look cool. Tyramigo has a good design, but the rest of the mechas except for Tiger Lance are too blocky and undetailed, just like the Zyudenryu in Kyoryuger. Since they do have one mammal mecha thus far, I do hope there are more down the line. Even better would be one or two birds, fish or amphibians.

The plot reads like a Zyuranger rehash. (The dragon knights rumor must have been referring to this.) If that's the case I hope they do a better job with it than Zyuranger did, but given the state of 2010s Sentai I'm not holding out much hope. More likely, and given Toei's absolute safe mode, it'll just be another saccharine "wacky anime hijinks" fest with gadgets that don't shut up, and villains with little personality and effectiveness*

*As unimpressive as Zyuohger was, the Deathgaliens were at least a unique concept for villains, even though nothing interesting was done with them.

I like the knights theme. It takes me back to the mystic force days. And for some reason I’m still digging the Dinos

I'm not digging the dinos, not that sooner.