Not bad! I enjoy the art, though I think the enemies could stand to be animated (I imagine that was left out to save time, though, which is fair enough). I feel like it could use a bit more depth, and the mechanics could maybe use a bit of tweaking, but the 80s Taito influence comes through clear as day! This is a great start to a game.
I've only skimmed the other reviews, so apologies if I'm repeating things other folks have already said, but here are my suggestions to build on this:
Mapping the dash to another button might feel a bit more intuitive than mapping it to the down key. The down key isn't bad per se, but it definitely feels a bit odd at first and takes some getting used to.
I think it might also be cool to have it so you get a point bonus if you collect all the dinos and send them through the gate at once, along the lines of Flicky (and perhaps set it up so pressing C throws all the dinos you're holding at once, instead of one at a time) - it feels like it would add a bit of depth to the game. As it stands, it's a bit easy to get all the books on a level and max out the score.
The ice spell mechanic sort of feels like it might work better if it went straight forward instead of in an arc - I can understand why keeping the horizontal distance limited would be beneficial, but it does feel a bit awkward. Maybe a blast that goes straight forward a bit and then bursts after a short distance? Or if the arc was more important to the gameplay - having to arc the spell over things, or onto things. Maybe I'm just being nitpicky though!
I'd also say that you should be able to dash through stunned dinos to bounce them back into the air so you can pick them up again instead of having to wait for them to go back to normal so you can freeze them and then dash through them again.
I think that's all I can really think of! The music took a bit to grow on me, and the falling rocks are a bit frustrating, but I really only ever ran into them naturally on one level, so I don't really have a problem with them. Good start to a game - I don't see a lot of games that come this close to capturing the feel of an 80s arcade game while still being fun!