I second that. And I think, given the rowed shark teeth idea, Megalodon is practically decided for the mid range Gatling gun right? Although didn't someone have issue with the gap between eras concerning Megalodon and some of the others? Does anyone else feel that's a problem?

Just a question: will the dino powers be attachments to the main gun or not?

I agree for plesio and sniper. This is Kamen Rider, anything can happen, so let's not let time periods get in between megalodon and Paleo.

I like the idea of attachments. Makes it simpler. But since we're using a handgun type as the base weapon for Aqua, attachments will be kind of hard to do, conceptually speaking.

It doesn't really have to be a handgun. It can be a buster rifle or something. I mean, the base of the weapon is a water cannon, and we don't want that looking like a squirt gun. :p

Oh yeah, I forgot about the water cannons.

I think either Mosasaurus/Kronosaurus or any one of the dozen prehistoric marine reptiles that looks like that might work for the Ice Blast/Shotgun weapon. But the harpoon is kind of stumping me...

Plesio - Long range sniper
Mosasaurus - ice blast shotgun
Megalodon - Gatling mid range
??? - Harpoon

Pretty much anything can work for the last one, it just needs to have a slim body and dangerous look to it.

What about Ichthyosaurus for the harpoon? As I've gathered (and I could be wrong) they represent a number of species (Ichthyosauria) which are similar to it. Same as Plesiosauria and Mosasauria both of which have numerous creatures that all look practically the same with only size or slight feature variation.

Ichthyo sort of has a thin pointed snout (almost like a swordfish) so it works for me.

Kamen Rider Plamo: Transforms using plates and a belt with side cutters.
Inner Frame (The base form, like Den-O plat form.)
Action Armor/normal form. Weapons: Side cutters, Hobby Knife Halberd, Cement gun, File sword.
Auto Armor: Airbrush Spray (Acid, Cement and Liquid Nitro.) And chrome camo (Mirror coating.)
Aero armor: Wingblades, booster rockets and landing gear tonfas.
Military armor: Tread Feet, Chest cannon, Shoulder missles. (Very BIRTHDAY-ish mode.)
Mecha Armor: Beam Sabers, Machine Gun, just gundam esque weapons.
How does he/she henshin?
1. Insert plate into slot.
2. Press down on Nippers. (If no plate is in, it will be inner frame form.)
3. The inner frame suit forms around them, and a giant Plastic model plate will form in front and back of them.
4.The plates close in, engage, dissappear and The Rider is born
Inner frame= Gray suit with silver highlights, a few armor pieces and clear eyes.
Action Armor= Orange Armor with red Eyes, Round Kuuga-like design.
Auto Armor = Black armor, Flame decals, Engine parts. Yellow eyes.
Aero armor= Blue/white armor, Wings on back, boosters on butt. Blue eyes.
Military Armor=Green with camo armor, Tank tread feet, Tan eyes.
Mecha armor= Gundam colors, Gundamy eyes, basically gundam.
That is a lot for a first post.