The Kronos's Aeuna

Order: Xenoselachia

Suborder: Xenothunnia

Family: Aeunidae

Genus: Gladiodon 

Kronos, the youngest and the strongest of the Titans in Greek mythology. The one who ate his children in fear that they would overthrow his rule. A leader known for his ferocity, size and strength. The pliosaur Kronosaurus was named after him due to the fact that it was massive and was potentially a fierce predator. But no doubt it was intimidating and powerful. On Alladoras, there is a species named after Kronos. A species of predator that boasts a massive set of fangs and jaws, whose ferocity and strength during hunting was unparalleled. A predator of the high seas, this is the Kronos's aeuna (Gladiodon ferox), the greatest of the aeuna and among the largest of predators.

The kronos's aeuna is a predator suitable for the high seas. A tapered, fusiform body, large fins and a homocercal tail are all mainstay features of predators with a similar niche, such as contemporary, smaller aeuna species. It swims at a maximum recorded speed of around 48 km/h in short bursts, yet can maintain a speed of around 25 km/h in long distance swimming, for its endothermic nature means that it can operate at maximum efficiency, even in cold waters. The tail is filled with lots of slow twitch muscles, deep blue in colour as they are stained by oxidised copper from the hemocyanin to allow for endurance activities. For it is a nomad, swimming the high seas without end, and it is capable of circling the planet multiple times in its journeys, whether it be to breeding grounds or to hunting grounds. Swimming during the day and night, it literally has to move to breathe — there is no break in its travels.

In its travels, the endotherm naturally becomes hungry. The kronos's aeuna is not a picky eater — its size means that it can tackle prey as large as medium-sized grapsharks and mobucetes. Hunting often among large schools of pelagys, it does not target the smaller schoolers specifically, and usually, it targets larger prey. While it is fully capable of targetting grapsharks, the risk is usually too high, which often forces it to hunt smaller, more manageable prey, such as other aeuna and gallant rushers (Calcarostris velox), a similarly-sized species of jetgiller (Pulmonobranchia), which it often chases for long times. Aside from hunting amongst massive schools of predator and prey pelagys, it may target individual prey and chase them for hours on end, using its stamina to tire their prey until exhaustion.

Such a ferocious predator is also intelligent. The kronos's aeuna is smart. Larger than species such as the only sapient organisms of Alladoras, the ferron (Coopearovenator sapiens), it can be seen in close association to clans of them, often stealing food and utilising its faster speed and much better endurance to outspeed them. The kronos's aeuna can also memorise things, with a great capacity for memorising landmarks and the pattern of the stars in the sky for long migrations, as well as for other aliens to avoid and which are easy to hunt. To the ferron, it is feared as a "maneater", due to its massive size and lack of fear, potentially taking ferron victims as prey during times of need.