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A giant hebrivorous placoderm that possesses derived jaw plates that have formed a grinding surface on the inside of its mouth, capable of chewing the leaves of these seagrass trees, in a behaviour similar to that of mammalian browsers. (Image 3). A massive gut (that gives it this front heavy shape) is capable of processing immense amounts of food, as the creatrure can gather food and chew as it swims.

Its front body is covered in armored plates that not only offer protection, but also have a strange sharp shape, similar to that of the hull of a ship. This allows the giant fish to tear through the thick vegetation of its home and open new spaces where smaller species can thrive. It is the ecosystem engineer of these deep underwater forests (Image 2).

This big guy is a part of my worldbuilding project on instagram Oblivia, The Forgotten Seed if you want to check more speculative evolution creature designs.

Tidewild, also called the Shallow Ocean, is an enormous shallow body of water trapped between the Known world and the New Continent. Seagrasses are the dominant flora of Tidewild, diversifying to fill many niches. From the traditional meadows, to small canopies scattered across massive fields and dense forests of the deep waters.

Seagrasses have diversified to fill niches similar to kelp, reaching towards the surface for more sunlight and providing vital food, shelter, and nursery grounds for hundreds of marine species.

1.The Sea Palms (Thalassopalma spp)-Image 2

In the shallows, Sea palms tower above seagrass meadows, competing for the most sunlight. Supported by their hardened stem, their leaves float on the surface, collecting light and forming a canopy that harbors a diversity of life.

2.Sunreacher (Pelagondendron gigantea)-Image 3

In deeper water, where sunlight is reduced, seagrass meadows give way to dense forests of Sunreachers, seagrass trees that have grown massive as they struggle to reach the light of the surface.

This is part of my spec-evo worldbuilding project Oblivia, The Forgotten Seed over on instagram, if you want ot check out more flora and fauna of this world.

The Thousandhorn (Remungula myrioceras, meaning Many-horned Oarhoof) is a semiaquatic perissodactyl that grazes on vast underwater plains of sea grass that fill a massive shallow ocean.

With a similar body type to that of seals, instead of flippers, these creatures move through the water using their paddle-like hooves that cover all their fingers. (Image 2)

A crown of many keratinous spikes, that gives the Thousandhorn its name, serves as a weapon both in intra and interspecies affairs. Headbutting is a common territorial behaviour among males (Image 3). For that reason a strong neck is supported by elongated vertebrae that form a sail, which also helps with heat regulation in the warm waters of its environment.

This creature is a part of my worldbuilding project Oblivia, The Forgotten Seed, over on Instagram, if would like to follow and check out more creatures.

The Ashen Titanbird is an enormous quadrapedal bird that fills the niche of an ecosystem engineer. They forage on high branches, consuming leaves and fruit alike, clearing the canopy and opening paths through the deep vegetation with their mass, all the while dispersing seeds and keeping the forests alive.

Titanbirds are a member of a quadrapedal bird family of aquatic ancestry, that have thick bones with reduced pneumatization. Their front limbs possess a digitigrade-like stance. They walk on their column-like first metacarpal and absent of phalanges, while the other fingers are fully formed, each supporting a giant claw. They use their claws to pull down branches to feed and are able to rear up on their hind legs, reaching the most nutritious leaves and fruits.

A wide enlarged pelvis and plantigrade hind limbs support their massive weight. Their feet have all four fingers. Robust and slightly facing inwards, this finger arrangement allows the animal to hold a bipedal stance while rearing up to feed.

This creature is a part of my worldbuilding project Oblivia on instagram if you would like to follow and check more.

A dog-like afrothere, the Bannerhound (Cynotherium signirhyncus) is a pack hunting social predator of the open grassland. It uses its elongated snout for communication, expressing emotions, mood and most importantly coordinating hunts.

Packs are led by a matriarch, distinguishable by the long tuft of hair at the end of the snout. She is the one that leads the hunt, using a series of snout movements to command pack members. More than a hundred different motions have been observed, each corresponding to a different response by the pack.

Similar to waving a banner to command an army, each signal dictates a specific tactic that packmates have to follow. This is were the creature gets its name.

If you would like to check more creatures like these, they are part of my world building project, Oblivia on instagram.

The Great Shellfin (Trigonochephalus megaptera) is a species of pelagic softshell turtle that uses its massive fins to glide along the water like the manta rays of Earth.

An enormous filter feeder, its uses its unique skull and beak structures (Image 2) to create a large gape enough to swallow a human whole. Barbed spikes on the inside of its mouth trap small organisms from the waters.

Since it is not a particularly fast swimmer, it cannot impement ram feeding the same way whales of earth can. Instead, it lunges forward its head, opening its jaws and creating suction that directs the food towards its mouth (Image 3).

It glide along the water using its enormous fins, that are not only formed by the arm bones but also from the outer parts of the central ribs of the shell, both outer bones and shell being quite soft and flexible.

This creature is a part of my worldbuilding project Oblivia, on instagram if you would like to check more.

The Crested Olicorn( Monodon Olicornis) is a giant rodent that lives deep in mountainous regions among rocky terrain and steep surfaces.

Its head decorated by a unique single tusk, caused by fused upper incisors, that make it resemble a horn. Its lower lip has become elongated and reiforced by rubbery pads which it uses like a trunk to grasp the low hard vegetation that grows in the hihg altitudes of its habitat. Its 3 toed feet have grasping rubbery fingers and pads, that allow the animal to grip the rocky and steep surfaces and traverse them with ease.

It is a rare and majestic creature that has captured the imagination of the people of the regions it inhabits, attributing to it magical and healing powers.

This is a creature part of my worldbuilding project, Oblivia, on instagram if you want to check out more creatures.

The Feathered Junglewyrm (Silvacrobates Quetzacoatli) is a small arboreal dragon that hunts insects amongst the dense forests and jungles. The particular niche it fills, in combination with its simple body plan indicates to scholars that is must be a basal species amongst the dragon lineage, as it has retained the small flying insectivore niche theorized to have been the origin of the family Pterorhachidae(meaning back-wing) or commonly called Dragons, that have conquered the skies of this world.

A crest of long scales decorating the head and a split ribbon-like tail take part in elaborate courting rituals. Rounded wings with sharp edges allow this small dragon to maneuver the dense forests with ease while it chases its prey.

This is creature part of my world building project, Oblivia, on instagram.

The Drifting Maroonback (Vivinsula Caleocordis) is a sight to behold, a fully aquatic drake of massive proportions with a strange anatomy unlike any of their kin, thought to be one of the most ancient lineages among the family Pyrotrachelidae.

(Pyrotrachelidae, meaning fire-necks, commonly called Drakes are a family of fire breathing, herbivorous, megafaunal reptiles that use this weapon as defense.)

A unique adaptation to the cold, their emberheart, the organ responsible for fire breath, is split into two different parts. Two of the chambers have stayed close to the main body, where they are constantly at work igniting digestive gases to heat the animal’s blood. This helps the animals keep their temperature high and survive the cold waters of the north. One chamber is close to the mouth, where it still plays the same defensive role as it does to other species of Drakes, but with reduced effectiveness. In addition, thick layers of fat cover its body to reduce heat loss.

However as their internal gas chamber makes them extremely buoyant, they use their long necks to graze on the tops of kelp, and they are mostly unable to dive underwater, always floating close to the surface like small living islands.

This a creature part of my worldbuilding project Oblivia on instagram, if you want to check more!