Thanostoma

## Thanostoma aquaprinceps

Status: NT

Timespan: R.41 - Present

Habitat: Shallow Sea

Distribution: All Temperate Seas

Niche: Apex Predator

Nutritional Value: 80

Size: 17cm

Predecessor: Makoura jousteri

Classification: Makouradae, Spinacheliforme, Caudara

Latest Mutations: Blue Pigmentation = 3, Pinhole eyes = 6, Jaw = 5

Description: The outwards-jutting tusks of their ancestors have morphed into long, dangerous and venomous canines which are a deadly contribution to the new jaw. Two large pinhole eyes, that the animal is able to swivel slightly for increased range of sight, on the side of the head scan the ocean for prey. Few animals can withstand an attack from this mouth. All of this makes this species the top predator of its time, as well as also being able to occupy shallow water thanks to its blue pigment. It is only restricted by its lack of buoyancy.

Previous Mutations: Extra-Efficient Muscles, Electroreceptors, Open Circulatory System, Axochord, Whip Tail, Three Gill Slits, Notochord, Cartilage Vertebrae, Digestive Carnivorous Bacteria, Two Poisonous Spikes on Tail, Dentine Teeth, Venomous Canines, Cup Eyes

Discovered by: Agentine

## Thanostoma minor

Timespan: Gnathian to Fressian Stages of the Atroxian (R.60 - R.70)

Habitat: Deep Ocean, Continental Slope (Mid Ocean), Shallow Sea

Distribution: Under Temperate and Tropical Ocean, All Temperate Seas

Niche: Apex Predator, Minor Predator

Size: 12.8cm

Predecessor: Thanostoma aquaprinceps

Classification: Makouradae, Spinacheliforme, Caudara

Info: During the Gnathian and Fressian stages, the oceans of Ezta were dominated by Thanostoma, the largest animal of the time. But the available food of the deep ocean was not large enough to really sustain these animals and so a smaller variant, Thanostoma minor, evolved to take over this niche. Specimens have also been found in shallow areas, indicating that this species also occupied a niche between its larger relative and smaller predators. It was quite a success, until new species of Thanostoma evolved and usurped its positions.

Description: It had the long, blue, tapering body and whip-like tail with a spike, typical of its group, lined with electroreceptor and three gills on each side. The outwards-jutting tusks of their ancestors morphed into long, dangerous and venomous canines which were a deadly contribution to their jaws. Two large pinhole eyes, that the animal could swivel slightly for increased range of sight, were placed on the side of the head, scanned the ocean for prey. It had muscles with special vacuoles, an open circulatory system and a primitive gut and stomach containing carnivorous bacteria. The vertebrae is made of cartilage.

Cause of Extinction: Outcompeted

Discoverer: StealthStyle

## Thanostoma saeptum

Timespan: Fressian Stage of the Atroxian (R.66)

Habitat: Shallow Sea

Distribution: All Temperate Seas

Niche: Herbivore

Size: 19cm

Predecessor: Thanostoma mediossium

Classification: Makouradae, Spinacheliforme, Caudara

Info: Due to a generic deformity, the gills of this species that were necessary to survive became closed off, and soon led to extinction.
Description: It had the long, blue, tapering body and whip-like tail with a spike, typical of its group, lined with electroreceptors, but no real gills. The outwards-jutting tusks of their ancestors morphed into long, dangerous and venomous canines which were a deadly contribution to their jaws. Two large pinhole eyes, that the animal could swivel slightly for increased range of sight, were placed on the side of the head, scanned the ocean for prey. It had muscles with special vacuoles, an open circulatory system and a primitive gut and stomach containing carnivorous bacteria. The vertebrae is made of cartilage.

Cause of Extinction: Unfit

Discoverer: PositiveTower

## Thanostoma altium

Status: LC

Timespan: R.70 - Present

Habitat: Mid Ocean, Deep Ocean

Distribution: Non-polar Ocean

Niche: Predator, Carnivorous Filter-Feeder

Nutritional Value: 82.6

Size: 12.8cm (length)

Predecessor: Thanostoma minor

Classification: Makouridae, Makouridea, Caudaria

Latest Mutations: Oily Liver

Info: This Thanostoma become evolved to take on the deep ocean, with oils in its body being used for buoyancy, it could swim comfortably through the open water.

Description: With a long, blue tapering body ending in a spiked whip-like tail, this Thanostoma has the typical shape of a Caudarid. It has a cartilage jaw and two venomous canines surrounded by rather primitive teeth. Each side of its head has a swivelling pinhole eye. It also has three gill slits, and a line of electroreceptors running down its body. Internally, a gut leads to a stomach containing carnivorous digestive bacteria and cartilage vertebrae runs down the spine.

Previous Mutations: Extra-Efficient Muscles, Electroreceptors, Open Circulatory System, Whip Tail, Three Gill Slits, Cartilage Vertebrae, Digestive Carnivorous Bacteria, Two Poisonous Spikes on Tail, Dentine Teeth, Venomous Canines, Blue, Pinhole Eyes, Cartilage Jaw

Discoverer: StealthStyle

## Thanostoma rex

Status: LC

Timespan: R.70 - Present

Habitat: Shallow Sea

Distribution: Temperate Southern Hemisphere

Niche: Apex Predator

Nutritional Value: 150

Size: 25.5cm

Predecessor: Thanostoma aquaprinceps

Classification: Makouradae, Spinacheliforme, Caudara

Latest Mutations: Bigger

Info: Thanostoma rex is the largest animal so far to exist on Ezta! It's increase in size gives it an advantage over its historical prey, the Thanostoma mediossium. It dominates the temperate seas of the Southern Hemisphere, driving the long-reigning Thanostoma aquaprinceps into extinction here.

Description: With a long, blue tapering body ending in a spiked whip-like tail, this Thanostoma has the typical shape of a Caudarid. It has a cartilage jaw and two venomous canines surrounded by rather primitive teeth. Each side of its head has a swivelling pinhole eye. It also has three gill slits, and a line of electroreceptors running down its body. Internally, a gut leads to a stomach containing carnivorous digestive bacteria and cartilage vertebrae runs down the spine.

Previous Mutations: Extra-Efficient Muscles, Electroreceptors, Open Circulatory System, Axochord, Whip Tail, Three Gill Slits, Notochord, Cartilage Vertebrae, Digestive Carnivorous Bacteria, Two Poisonous Spikes on Tail, Dentine Teeth, Venomous Canines, Cup Eyes, Blue, Pinhole Eyes, Jaw

Discovered by: StealthStyle

## Thanostoma superficiem

Status: NT

Timespan: R.70 - Present

Habitat: Shallow Sea, Ocean Surface

Distribution: Temperate Southern Hemisphere

Niche: Apex Predator, Minor Predator

Nutritional Value:

Size: 12.8cm

Predecessor: Thanostoma minor

Classification: Makouridae, Makouridea, Caudaria

Latest Mutations: Swim Bladder

Info: Around this point in time, the Thanostoma genus really began to spread out around the ocean. This species evolved a swim bladder, fillable by breathing air, which allowed it to patrol the ocean surface, where none of its relatives had so far been able to occupy.

Description: With a long, blue tapering body ending in a spiked whip-like tail, this Thanostoma has the typical shape of a Caudarid. It has a cartilage jaw and two venomous canines surrounded by rather primitive teeth. Each side of its head has a swivelling pinhole eye. It also has three gill slits, and a line of electroreceptors running down its body. Internally, a gut leads to a stomach containing carnivorous digestive bacteria and cartilage vertebrae runs down the spine. It has a swim bladder, centrally located in its body.

Previous Mutations: Extra-Efficient Muscles, Electroreceptors, Open Circulatory System, Axochord (L), Whip Tail, Three Gill Slits, Notochord (L), Cartilage Vertebrae, Digestive Carnivorous Bacteria, Two Poisonous Spikes on Tail, Dentine Teeth, Venomous Canines, Cup Eyes (L), Blue, Pinhole Eyes, Cartilage Jaw, Smaller

Discoverer: StealthStyle

## Thanostoma stalloni

Status: VU

Timespan: R.77 - Present

Habitat: Shallow Sea, Ocean Surface

Distribution: Southern Hemisphere Temperate Seas & Ocean

Niche: Predator, Carnivorous Filter-Feeder

Nutritional Value: 200

Size: 31cm (length)

Predecessor: Thanostoma rex

Classification: Makouridae, Makouridea, Caudaria

Latest Mutations: Bigger, Swim Bladder

Info: Once again, this species continues this lines habit of being the biggest on the planet, now at a relatively impressive half a meter. It has also extended its swimming capabilities and range, being able to conquer the open ocean thanks to its swim bladder. However, there is not a lot of prey large enough for it.

Description: With a long, blue tapering body ending in a spiked whip-like tail, this Thanostoma has the typical shape of a Caudarid. It has a cartilage jaw and two venomous canines surrounded by rather primitive teeth. Each side of its head has a swivelling pinhole eye. It also has three gill slits, and a line of electroreceptors running down its body. Internally, a gut leads to a stomach containing carnivorous digestive bacteria and cartilage vertebrae runs down the spine. Connected to the gut by a duct is a swim bladder.

Previous Mutations: Extra-Efficient Muscles, Electroreceptors, Open Circulatory System, Whip Tail, Three Gill Slits, Cartilage Vertebrae, Digestive Carnivorous Bacteria, Two Poisonous Spikes on Tail, Dentine Teeth, Venomous Canines, Blue, Pinhole Eyes, Cartilage Jaw

Discoverer: StealthStyle