Deinonychus

You know what? No big writeup this time, i'm just gonna tell you if you describe these boys without feathers, i'll appear at your doorstep and bonk you on the head with an encyclopedia. 

Dino races are a very popular sport in Saurotopia. When an unknown perpetrator sabotages the locks on the raptor stables, a group of stable-boys are put to a test - they are the only thing that stands between a horde of deinonychuses and a city completely unprepared for it.

The natives of Uk'Tash jungles hunt alongside their dinosaur companions. Conquistadors taking the reptiles for mere lizards, and launching a war against the barbarians might find themselves in a bit of a pickle - as the natives' reptilian goddess infuses the dinosaurs with rage and a spark of intelligence, sending them in endless yet carefully coordinated swarms against the would-be conquerors.

A spoiled noble is paying an extremely large sum to the first person able to bring him a trained dinosaur. While it has never been done before, it is theoretically possible. While the money is enough to net an early retirement, merely getting to the Emerald Jungles is a perilous task - and getting there and back again, while caring for an exotic being like a deinonychus (apparently the smartest and easiest to train of the reptiles) is the type of adventure that songs are sung about.

Brontosaurus

BIG DINO COOL.

Dr McWheelingston has created a new prototype of mech-suit, this one designed to be supremely durable against kinetic damage. A comprehensive - if obviously insane - way to test their durability would be to agitate one of the planet's many herds of diplodocuses. If their mighty tails are unable to knock down the mechs, then the machines can be deemed battle-ready.

In the lands of Sin Darya, humans have with more or less success tamed almost all species of dinosaurs. However, the mighty sauropods remain too mighty to be tamed by the little folk. On the other hand, a family of especially pacifist great cyclopes has managed to tame at least one herd of brontosauruses, and have used the giant dinos as their main source of food for years.
Recently, a parasitic skin infection has affected the herd. While they learned that the fungal growth can be scrubbed off, the cyclopes are neither perceptive nor careful enough to effectively save all their dinosaurs. Hence, they asked the humans for some help - but are unwilling to guarantee no harm will come to them, given how the brontos get aggressive occasionally.

A group of explorers tried to find an old efreeti said to dwell at the bottom of a dead volcano. They did not find the outsider, but ended up on a wild adventure exploring the hollow interior of their world, finding an ecosystem much unlike the one on the surface, with giant lizards being the dominant species.
After several years of searching, they have finally found a crack in the "ceiling", leading them back to the outside world. While it is quite high up, the druid has an idea - if they can keep one of the long-necked lizard-beings calm, they may be able to climb up it's massive neck.

Ankylosaurus

Not much can be said about ankylosauri, is there? They're big friggin dinos and they are as awesome as all dinos, arent they?

In the primal land of Sin Darya, humans live alongside multiple species of mighty dinosaurs. Up until recently, the humans tended to avoid the larger dinosaurs and hunt the smaller ones. In some of the proto-states, dinousaur taming and husbandry has recently begun to take root. At first, the Skagen hunters gained an edge, hunting alongside their trusted raptors. Their supremacy was quickly brought to an end, though, as the Brughal Khanate unleashed the full might of their Ankylosaurus riders upon the world. Right now, the only force that has any chance of standing against the Khan is the six young masters of the elements, but their training is far from complete.

The latest trend in the Sole Earthen Republic is miniaturized versions of great beasts from the earth's long gone eras. Because the safe version of the process requires a stable source of magic and careful technomagical configuration, its expensive as hell and beyond the grasp of anyone but the families of the multi-trillionaire hegemons of Earth. The market, however, is teeming with bootleg attempts to create micro-beasts. Most of these have easily noticeable flaws and are generally easy to avoid. However, a recent batch of tiny ankilousauri that revert to their original size when agitated has the city of New Constantinople in disarray, and the fresh batch of  the Magihazard Detainment Organisation recruits at the edge of their nerves.

Saurian tradition has it that the world is a wide disc supported in vast nothingness on the back of a giant ankylosaurus by the name of Agnekho. While most young saurians take the legends with a grain of salt, none can argue that the Ffogdanob twins, shamans in the employ of the Scaled Prince, have gained great power ever since supposedly meeting Agnekho in one of their vision-questing seances. When the twins invite the newly-arrived warmbloods into one of their seances, an honour they had repeatedly denied the Prince himself, the petty ruler calls a blood-hunt against the hated mammals. If they last the night, there is no saying what they may discover - but survival will not come easily.