Carcharasect testudines

Physical features
The Carcharasect Testudines possesses a shell on its back consisting of interlocking bony plates. Each plate possesses a fin-like structure used for heat regulation, repurposed from a support for its dorsal fin earlier in its evolution. There is also a chest plate present and several bony plates around it’s body used as battle armour. A large egg-sac is positioned at the rear of the torso, between the hind legs and egg fans. The egg fans are repurposed breeding claspers from earlier in it’s evolution. The head features three mandibles encasing it’s three proboscises, which each have a hook shaped fang used for latching onto prey. The face is covered by a bony mask with a ‘crown’ used to attract mates. The eyes are hemitorus shaped, giving a very wide range of vision to make up for the lack of advanced sight. The shell and bony plates are green and yellow to camouflage with the native flora. Two of it’s limbs have fused, giving the carcharasect a powerful leap and great balance when rearing up on it’s hind legs. The tail features spiky rings and a mace-like structure on the end as a weapon against competition and predators.

Social
The Most impressive feature of the Carcharasect is it’s three genders, male, female, and domale. All there are hermaphrodites, but can only impregnate one other, male with female, female with domale, and domale with male. They live in family groups of all three to rear young, and each serve a unique purpose in the group. The male protects the female as she cleans and nurtures the eggs, and the domale hunts for both of them. Males have sharper tail weapons and more separate front claws. They rear up when threatened. Females lack hooks on their proboscises, as they have adapted to cleaning eggs. Domales have spade-like, grippy claws in order to carry as much food as possible.

Diet
They have a seafood diet, primarily feeding on animals that resembles earth creatures like crustaceans, fish and molluscs.

Life Cycle
Carcharasects never evolved egg shells, so they lay their eggs in a shallow pool and the female precariously watches over them until they hatch after 0.8 of a Wallace II year. They then look after the young until they reach the age of 13.5 Wallace II years. Carcharasects reach sexual maturity at 22 Wallace II years. They have a total lifespan of around 45 Wallace II years.

Evolutionary history
Gomphiobia evolved into the king of the seas, and their reign lasted longer than most. They reached lengths rivalling that of earth’s great white shark and had thick bony armour. It’s spiracles adapted to the usual kicked up sediment clogging them, and evolved a filtration system. After there eggs were being devoured by parasites and egg-eating fish, some took to dry land to lay their eggs in fresh water. A caldera volcano erupted on an island, wiping out the vast majority of life. With no possible predators, and plenty of craters to fill with water, the Gomphiobia were able to drag themselves on land, and lay their eggs in the pools.
This required a lot of energy, so these specific Gomphiobia grew smaller, and using the bony armour plating on it’s fins to claw it’s way onto land. It’s hind limbs fused and created a flipper as back up for the tail. They ended up resembling an earth turtle, and were roughly the size of one too. Frequently, other gomphiobia tried to eat the adapted ones, leaving them crippled, dead or digested. So they evolved even more armour, and eventually took entirely to the land.