Olisthirodermia

**Olisthiroderms** (Slippery skin in Greek) sometimes called Froggers, are ectothermic, Septempollicem Psariaskoulikions of the class **Olisthirodermia**. All living Olisthiroderms evolved from the  Subclass: †Xenolissamphibia (Olisthirodermia-like Agrioderma). They inhabit a wide variety of habitats, with most species living within terrestrial, fossorial, arboreal or freshwater aquatic ecosystems. Thus Olisthiroderms typically start out as larvae living in water, but some species have developed behavioural adaptations to bypass this. Just like Amphibians on Earth.

They evolved around 300,000,003 years ago, and their point of origin is the swamp lands of South Primaterra. There are three Subclasses under **Olisthirodermia**, the Subclass †Xenotemnospondylimimica, the Subclass †Hyaenaepellia, and the Subclass Ygrodermia, Ygrodermia is the only subclass of **Olisthirodermia** that are still alive today. They evolved from the clade Neotenikos, like amphibians on Earth, their skin needs to be kept moist in order to stay alive they can absorb oxygen through their skin making them able to breathe underwater. The first species of **Olisthirodermia** is also the second species of Neotenikos. They're the Septempollicems answer to Amphibians, because of this they are very weak animals and there's only a few orders alive today, just like amphibians on Earth miraculously they survived several mass Extinction events despite seeming like they shouldn't be able to survive, just like amphibians, however also like amphibians, during the most recent mass extinction event they appear to have been hit hard by it with only a few species of them surviving, but miraculously they are bouncing back.

Their first subclass †Xenotemnospondylimimica had only one order under it, that order was †Temnospondylimimicia, when they evolved they started to compete with Xenotemnospondyli, and Xenolissamphibia, until there was only one species of Xenotemnospondyli left, and no Xenolissamphibia left. The reason why they out-competed them is because they filled out those ecological niches better than they did. But Xenotemnospondylimimica would be out-competed by Ygrodermia later on.

Olisthirodermia have five stages of their life cycle,

Stage #1. Egg

Stage #2. Tadpole-like form

Stage #3. tadpole-like form with legs

Stage #4. Salamander/lizard-like form with soft, smooth skin that they need to keep wet and external gills

Stage #5. Salamander/lizard-like form with soft, smooth skin that they need to keep wet and no external gills

## Levels of how much each class kept the electric ability,

Agrioderma 100%

**Olisthirodermia** 88%

Folidotodermia 75%

Fterotodermia 25%

Gounia 50%

Ypsilistasia 99%

Frynoskorpia 50%

Xenosynapsid unknown

Dinoavesia unknown

Dracosaurs unknown.

The reason why most of them keep it rather than getting rid of it it's because most of them just spend most of the time in or around water, like the electric eel on Earth, water softens the blow and the burn of the electricity so it doesn't hurt the user as much, that's why a lot of land septempollicems have lost it. But remember it can still hurt and or kill them if they use it too much' so they use it sparingly, they can either use it for self-defense or to hunt prey.

## Aposematism, and Albinaelectriamatism.

Just like how there is poisonous Amphibians on Earth, there are poisonous Olisthiroderms on Hume III, Aposematism is a warning sign to predators, to say hey don't eat me, I'm not worth it, I will kill you, typically these warning signs come in the form of very bright noticeable colors, such as bright red-orange, red, orange, or yellow, and sometimes for beautiful patterns of black and orange, or black and any other color, or just beautiful patterns of any color combination, greens, blues, green-blue, blue-green, yellow, and a pretty pattern of black and all these colors, just like how there's a poison dart frog on Earth, there is a few species of Poison dart frogamander on Hume III. Albinaelectriamatism works in simular way but instead of meaning poison it means High electrical voltage, not as strong as water creatures that have electric abilities, but stronger than most land creatures that have the ability. Albinaelectriamatism creatures usually come in just plain white, or white with a pretty pattern, typically with black, or maybe gray, sometimes another color, but mostly just those. Example species The great electric frogamander. Some species even use both Aposematism and Albinaelectriamatism, but species that do both don't have as good a poison or electricity aa species that only do one or the other.

## Intelligents Level

It is speculated that earlier members of this class had a higher intelligence, but most species alive today have lower intelligence then other Septempollicems, forgoing the higher intelligence that most other Septempollicems have, probably because they didn't need it, with the lifestyle they live it wasn't worth the trouble of maintaining, because higher intelligence means you have to get more food. But some species alive today still have higher intelligence, but not many. Most have the same intelligence as Earth Amphibians, which is normal animal intelligence. This makes them the only truly dumb Septempollicems.

## Anatomy

Their facial region possesses two whisacles, two eyes, sometimes on stalks, sometimes not, sometimes a parietal eye, sometimes not, no external ears only internal ears, and a mouth that can have actual teeth, pseudo teeth, or no teeth at all, and either a normal tongue, or a frog like tongue. And all of these are controlled by the brain.

The whisacles can be used to smell, and in some clades where they are long enough, they can be used with arms. The reason for this is most of them are prehensile, but in clades where they have reduced them in size some of them have lost the prehensileness and can only use them for smell. Their eyes used to be on stalks that were retractable like a snail, but only one order still have these today, the order Paliamatia, how good the vision is and if they can see in color or not all depends on the clade, but in most, next to near, all clades of **Olisthirodermia**, The night vision of Olisthiroderms appears to be superior to that of all other animals on Hume III. They have the ability to see colour even when it is so dark that Aununa are not able to see anything at all. But there are a few that have lost their eyes or reduce them to the point of being vestigial, such as the ones that live in caves or in deep dark water, anything outside the order Paliamatia has eyes that are very reminiscent if not the exact same kind of eyes as mudskippers on Earth, but some clades have even reduced that down to just normal eyes that you would see on a Tetrapod. All Olisthiroderms had a parietal eye, but most of them have lost this eye nowadays and most of the small few that still keep it only have it when they're young and lose it when they get older. Their ears, **Olisthirodermia** do not have external ears like us. However, they do have eardrums and an inner ear. The Olisthiroderm's ear is called a tympanum, just like a frog's ear on Earth, and is the circle you see behind a Olisthiroderm's eye. The lungs vibrate and are almost as sensitive to hearing as the eardrum. But some clades don't have ears at all and are deaf. Their teeth, Yes, a lot of Olisthiroderms have teeth. Some have what are called vomerine teeth that are only located on the upper jaw and are only in the front part of the mouth. These teeth are used to hold onto prey and not used to actually chew or tear apart prey. Just like a lot of Amphibians on Earth. Vomerine teeth and normal teeth are both real teeth, only the order Paliamatia has normal teeth. Others have pseudo teeth aka fake teeth, pseudo teeth are unusual teeth that can't be replaced. It's a tooth arrangement not seen in any other Septempollicems. And unlike all other living toothed Septempollicems, these clades teeth are not separate structures but sharp projections of the jaw bone. This means that worn down or broken teeth cannot be replaced. And others just don't have teeth at all. The only order with non vomerine teeth is Paliamatia. What their teeth are shaped like depends on what they eat. The ones that can't taste only use their tongues as a swallow assist, the ones that can taste, Two generations of gustatory organs occur during **Olisthiroderm** ontogeny in frogamanders and snail eyed salamanders (Anuracaudata and Paliamatia), and are classified as **taste** buds or **taste** discs. **Taste** buds are present in larval forms, whereas **taste** discs are typical for adults. Some clades of Anuracaudata have evolved a frog tongue.

Their body region usually possesses six legs and a tail, but some have lost a pair of legs or two or all.

Most of them have the body plan of the salamander or lizard, but some have taken on the crocodilian body plan, and some have taken on the snake and or worm-like body plans. Surprisingly and yet not surprisingly the Frog body plan has never evolved on Hume III, kind of, at least has not evolved in this class. Even though other frog like features such as frogs ears, and frog tongue, have evolved in this class the actual body plan has not. The reason for this is because the Frog body plan is to unique, the more unique something is the less likely it is to evolve a lot, the Frog body plan has evolved on a few other planets, but not a Hume III. The human body plan is a rarity and the fact that it happened on Hume III it's surprising, but just because Hume III has a humanoid alien does not mean every rare and unique body plan is going to be on this planet, only the most basic, simple, easy to evolve, and effective body plans will evolve multiple times in the universe.

Most have six legs with their feet usually ending in six toes, unlike other Septempollicems, on Earth tetrapods have five toes, but the Amphibians most of them have reduced the front pair of legs down to four toes while only keeping five on the back pair, in Olisthiroderms something similar has happened, where the front pair of Limbs usually has five toes, the middle pair having six, and the back pair having seven, but other clades have made every pair of Limbs have only six, only one order maintains the seven toes on all limbs, that order is Paliamatia. Some have webbed feet and some do not, it all depends on the specific Niche they fill. For Amphibians on Earth, none of them have claws, but unlike amphibians one order of **Olisthirodermia** still maintains Claws, well the rest either have webbed feet with no claws or or non webbed feet with no claws, the only order with claws is Paliamatia. As for their tails, all of them have tails, most of them can break their tails off to escape predators and it will grow back later, the tail is also used for balance, and in some clades they have re-evolved the tail fin to help them swim, and a small few of them have prehensile tails.

Their skin difference between the subclasses. The Subclass Xenotemnospondylimimica didn't have completely smooth skin like most amphibians on Earth, instead having skin that was more like Temnospondyli or Toads, rough and bumpy, but unlike Temnospondyli and Toads they still needed to keep their skin moist just like most Earth Amphibians, or else they would dry out and die. The Subclass Hyaenaepellia also had rougher skin like a Temnospondyli and Toads, but unlike Xenotemnospondylimimica, they actually could Venture a little ways from the water, just like a toad, but they weren't completely immune to drying out, just like a toad they still need to have some level of moisture or else they will die, that's why on Earth toads can be found in areas that are damp and have a little bit of moisture further away from water than other Amphibians. Hyaenaepellia also had to stay a little moist or else they would dry out and die. The Subclass Ygrodermia, the only survivaing subclass, has smooth moist skin that they need to keep moist or else they will dry out and die, but one family has evolved toad-like skin convergently after the extinction of Hyaenaepellia, that family is Toadamanders.

Their internal organs are exactly what you would expect, stomach, heart, and lungs, digestive system, all that good stuff. Their blood is red, they have a closed circulatory system, and they have bones made out of bones. They also have the three organs that allow electricity to be made. One thing that is different from Earth Amphibians that Olisthiroderms actually have penises, these penises when not in use are stored inside a cloaca, just like reptiles, some birds and the few mammals that have cloacas.

## Taxonomy

Kingdom: Animalisaliena

Phylum: Xenochordata

Subphylum: Psariaskoulikion

Clade: Idiotamcaptionemviventem

Superclass: Septempollicem

Class: **Olisthirodermia**

\*\*Subclasses under Olisthirodermia\*\*

Subclass: Xenotemnospondylimimica

Subclass: Hyaenaepellia

Subclass: Ygrodermia

\*\*Orders under Ygrodermia\*\*

Order: Paliamatia

Order: Anuracaudata

Order: **Xenogymnophiona**

Order: Giapantaneos

Add your own extinct orders here.