I wrote some unit descriptions and used machine translation. If you think these descriptions are suitable, I will correct the unit names and add more unit descriptions tomorrow or the day after tomorrow.

Kotaku - Chocobo
This ferocious and intelligent chocobo bird can run even faster than most flying birds. It uses its powerful beak and remarkable wit to hunt prey.

Kotaku Rider
The fast and agile Kotaku is an ideal mount for Skinks. Due to its poor carrying capacity and scarcity, these raptors are typically used as messengers and patrols. However, they can also form high-speed raiding formations when needed.

Tortoise - Turtle
Tortoises are gentle creatures. When attacked, their first instinct is to huddle and ignore the attacker. In most cases, they will patiently wait for the attacker to leave, but if harassed repeatedly, they will become enraged, just like any other beast.
PS: There's a display issue with the skill description. Hopefully, huddle should be disabled when enraged.

Tortoise Weaponry
When curled up, Tortoises firmly anchor themselves to the ground, preventing predators from attacking their vulnerable underbelly. Clever Skink craftsmen exploit this by constructing sniper weapon platforms within their tortoise shells, selecting the Skinks with the best eyesight as marksmen.
PS The curling animation isn't working properly.

Spinyfoot - Triceratops Junior
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Spinyfoot Rider
Only the most active Skinks are recognized by a Spinyfoot and form a bond. They spend their days playing, roaming, and hunting together until their last breaths are exhausted. It's said that Triceratops gives fruit to Skinks that form a bond with a Spinyfoot as a token of gratitude for the Skinks' care for their smaller cousin (and for improving their sleep quality).

Saurischia - Parasaurolophus
Despite its massive size, the Saurischia is a timid, fast, and unintelligent herbivore. Normally, it flees at high speed if approached. However, with a little guidance, the Saurischia will charge its enemies and devastate their formation before they can react or flee. P.S. Can they be given the Saurian Weapon Team's abilities?

Saurian Weapon Team
A domesticated Saurian has a gentle disposition and a strong carrying capacity, making it an ideal convoy. In battle, it carries a large number of javelins and a small group of Skinks providing fire support from a safe distance. When the enemy approaches, it will follow the Skinks' instructions, fleeing in the right direction or breaking through the enemy head-on.
P.S. They carry a number of bags, perhaps giving them ammunition replenishment abilities.

Spindler - Large Lizard
Spindler lives in swamps and around water, hunting smaller aquatic and terrestrial animals for survival. Outside of hunting, it rarely moves and is gentle, even allowing small creatures to temporarily reside on its back. However, when provoked, it will launch a devastating charge, crushing any enemy.
P.S. Based on its long mouth, I believe it primarily feeds on fish (large fish), supplemented by smaller animals (human- to horse-sized). PSPS: 75 run speed and 4.5 acceleration are a bit too fast for their size (stubby, short legs), even surpassing Cold One Riders, but they should have Ogre Charge. Their turn speed is 2 (faster than almost all cavalry), but due to intermodularity, the actual performance is consistent with the model.

Dystropheus Rider
Temple Guards typically don't form a bond with their mounts, as most mounts wouldn't be able to endure centuries of guard duty. However, a Dystropheus is an exception. When a temple guard is fortunate enough to encounter a Dystropheus, they develop an extraordinary rapport over centuries of guard duty, allowing them to unleash their might when necessary. When ridden, a temple guard will do everything in their power to protect their companions, allowing the Dystropheus to focus on a charge that's powerful enough to even destroy city walls!
PSPS: This is my favorite unit in this mod!
PSPS: The green text is incorrect. Although this unit has a bonus against large enemies, it's better suited to fighting against large groups of enemies.

Dystropheus - Tyrannosaurus Rex
Dystropheus is said to be the most successful predator ever. Fast and efficient, they hunted in packs, capable of taking down any large creature of their time. However, overhunting ultimately led to their near extinction, with only a few remaining in limited areas.

Cyclops Rider
When Saurus use cunning and calm control over Cyclops, they can hunt the largest prey and reap the largest trophies.

PS: Based on the model, I believe this is an anti-large unit. The attack animations on this model do not correspond to an anti-infantry unit.

Scorpion Rider - Flying Stingray
This creature once inhabited the ocean. Its flaring head, membranous wings, and a pair of electric-discharging antennae are all remnants of that era. While these antennae are now used only for courtship, the clever Skinks quickly discovered the advantages of their electric javelins.

Shield Dragon - Shield Dragon
The Shield Dragon's armor is not as strong or insulated as that of the Ankylosaur. However, the numerous and large crevices give it superior mobility and attack capabilities, as well as excellent heat dissipation.

Shield-Torosaur (Nova Engine)
Legend has it that each Nova Engine shot would launch a sun at the enemy and detonate. However, even the strongest Ankylosaurs couldn't carry a Nova Engine, as the constant heat and cold would shatter their tight armor. Fortunately, the expedition found a suitable dinosaur to transport it.

Therodon - Stegosaurus
The Therodon's bony plates are its most conspicuous organ. Skink scholars believe they help regulate body temperature, but the Slann believe they were designed to protect ancient relics of the Old Ones.

Therodon (Cesium Engine)
Legend has it that the Cesium Engine was a tool used by the Old Ones to carve the earth in the void. The Slann long ago sought to use these relics as weapons. However, the Cesium Engine is delicate and fragile, and a single stray arrow could destroy it. Its fragile material and scarcity limited its use to guarding hidden sacred sites. Fortunately, the expedition found a suitable dinosaur to transport it.

Rhacophorus
A small pterosaur, its ferocious nature contrasts with its petite size. Skilled Skink trainers select and tame the more intelligent individuals as pets and reconnaissance tools.

Archaeopteryx
A primitive half-bird, half-dragon creature, adept at stealth and sudden attacks. It is said to be an experimental synthetic lifeform created by the Old Ones. It lurks in tree trunks and the understory, pouncing and attacking any small creature passing by.

Diplodocus
Possessing the ability to spit blinding venom. When threatened, it opens the umbrellas on either side of its head to attract the target's attention, identify the target's eyes, and then spit blinding venom.

Ambystoma
Ambystoma is a distant evolutionary relative of salamanders. Compared to salamanders, ambystoma have gone further aquatic, having evolved to two hind legs and a streamlined dorsal fin. Ambystoma secretes water-soluble fluids in its mouth and mixes them with large amounts of water to create a solution. These solutions react with air to form a mucus that captures prey.

Dinobots
Dinobots specialize in hunting medium-sized creatures. They use their flexible forelimbs to tackle prey or their single horn to intimidate larger creatures. Their curled tails help maintain their center of gravity, allowing them to quickly shift their weight by straightening or tilting it when needed.

Sharkclaw
Large raptor.

Dinobots
Dinobots excel at aquatic maneuvers. Two tentacles that sense the water's bioelectric fields and additional fins with smooth skin enhance its agility. Its tail stingers are heavily slotted, allowing them to break apart at high speeds and explode upon impact.

Giant Moa
A giant cousin of the scaly-bodied dinosaur. Its flexible neck allows it to precisely capture small prey.

Giant Chopper
This ancient beast shares a common ancestor with the troglodytes. Both ditched sight for more intuitive additional senses. Unlike the troglodytes, the Giant Chopper uses these senses to find its prey. They spend their lives searching for worthy prey, using their single horn to pierce their targets.

Carcharodontosaurus
Although Carcharodontosaurus primarily inhabits the ocean, expeditions have successfully brought some individuals small enough to aid in the grand plan.

Diplodocus
This beast is enormous and gentle, but all attempts at domestication have failed. The Slann believe this is due to its disproportionate brain size, preventing it from developing complex responses. Because of its size, the buoyancy of shallow water reduces the strain on the Diplodocus.

Photoshop animations are a bit strange.

Giant Tyrannosaurus
It is very similar to the common Tyrannosaurus, but larger and perpetually hungry. According to some stone tablets, this behemoth was likely blessed by the Old Ones, granting it immortality and a hunger. After the Old Ones' departure, it fled into the jungles, where it continues its endless hunt to this day.

Winged Serpent
Influenced by Eastern rulers, the Winged Serpent is similar to but different from the Quetzalcoatl.

Thunder Serpent
The largest sauropod, a walking scourge, and a destroyer of cities. In the past, Thunder Lizards were considered untamable. By chance, several Slann and Skinks collaborated to establish a connection with the Thunder Lizard. Ultimately, through the psychic relic on the Thunder Lizard's back, they managed to establish a lasting bond with it and persuade it to join the Grand Plan.

Lizard Hunter
An ancient creation of the Old Ones. A core member of the Lizards, offering a more balanced combat capability than other variants. Lizard Hives spawn a large number of Hunters when there's no special need.

Lizard Acid Spitter
An ancient creation of the Old Ones. A Lizard's ranged combat power, its high-temperature acid can weaken opponents before a charge. Legend has it that within the Lizard Hives, there's a special method that transforms a Lizard Hunter into an Acid Spitter.

Lizard Predator
An ancient creation of the Old Ones. A Lizard's tracker, stalking prey with speed and stealth, exploiting their weaknesses when needed. Legend has it that within the Lizard Hives, there's a special method that transforms a Lizard Hunter into a Lizard Predator.

Lizard Rider
An ancient creation of the Old Ones. A defender of the Lizards, they will charge into enemy lines to draw fire from their allies. Legend has it that within the Lizard Lair, there's a special method that transforms Lizard Hunters into Lizard Riders.

Lizard Leader
A personal creation of the Old Ones. The leader of the Lizards, privy to many ancient secrets. He leads the Lizards into hiding in the jungle. Legend has it that within the Lizard Lair, there's a detailed grand plan.