Planius

## Planius primus (Agentus Tinus)

This species grew bigger than its ancestor, but the only way to do so, without a circulatory system was to become flat. It now moves in more of a rippling way, and is fairly common on the ocean floor.

Features: Planius primus still has no circulatory system, and so required nutrients to diffuse in from the water. This places restrictions on size but this species got around it by becoming flat, so no part of its body it too far from the skin. In response to this, its fairly advanced muscles have become more spread out, and the two nerves have become thinner and been joined by a third in order to cover the whole body. The advantage of being bigger and flatter is that it has a wider mouth to increase microbe intake.

Distribution: Deep Ocean

Time: Developorian Stage of the Atroxian (R.1 - R.3)

Size: 1.8cm (length)

Lifestyle: Filter-feeder

Classification: Planiusidae, Ochipodia

Predecessor: Superstes veteris

Cause of Extinction: Outcompeted

Discovered by: Agenttine

## Planius ventriculum (Tinus Agentus)

This is another herbivorous worm, that feeds on the local moss. It is doing pretty well but not as well as the other herbivore, Superstes ventriculum.

Features: This species has bacteria in its stomach that can break down multicellular matter. However, it does not have anyway of breaking the matter down into small enough chunks for the bacteria to work. It has to hope that the chunks it breaks off are the right size, or it chokes. It has evolved tooth-bumps like Superstes ventriculum that it uses to prise moss of rocks.

Distribution: Deep Ocean

Time: Developorian Stage of the Atroxian (R.2 - R.4)

Size: 1.9cm (length)

Lifestyle: Filter-feeder

Classification: Planiusidae, Ochipodia

Predecessor: Planius primus

Cause of Extinction: Outcompeted

Discovered by: Agenttine

## Planius Gravis (Timus Agentus)

Unfortunately, this species has been greatly slowed down. The lumps of armour on its back have made the organism heavy, and with no appendages to help it move, it moves very slowly indeed. Not to mention the lumps are sparse and would not provide much protection from the non-existent predators.

Features: The calcified lumps of armour on its back are formed from calcium carbonate. This species has also evolved gills, four in total. These increase the surface area and the amount of oxygen being taken in. However, given the size and flat shape of this organism, its not really necessary.

Distribution: Deep Ocean

Time: Developorian Stage of the Atroxian (R.3 - R.4)

Size: 2.0cm (length)

Lifestyle: Herbivore

Predecessor: Planius ventriculum

Past Mutations:
Muscles
Bigger (Flat)
Digestive System (Bacteria)
Pit Eyes

Cause of Extinction: Outcompeted

Discovered by: Agenttine

## Planius reliqua (Tinus Agentus)

The death of this species means the end of the peculiar, short-lived Planiesa family.

Features: The calcified masses grew in an unfavourable way; they ended up blocking the nervous system, so that coordination was impossible. If this wasn't bad enough, it also picked up a genetic disorder that led to the wasting away of its muscles.

Distribution: Deep Ocean

Time: Developorian Stage of the Atroxian Stage (R.4)

Size: 2.0cm (length)

Lifestyle: Herbivore

Predecessor: Planius gravis

Past Mutations:
Muscles
Bigger (flat)
Digestive System (Bacteria)
Pit Eyes
Calcified Masses
Gills (4)

Cause of Extinction: Unfit

Discovered by: Agenttine