Xenosynapsida

Xenosynapsida (alien together face in Latin) sometimes called Protogounies, were a mesothermic class of Septempollicema, They evolved around 233,333,332 years ago, and their point of origin is either the grasslands or the deserts of South Primaterra. They are Septempollicems answer to **Therapsids,** and they are the ancestors to Gounia.

They were the dominant class on South Primaterra, until they lose the title to Dinoavesia, after an Extinction event wiped most of them out. The few survivaing clades would give rise to Gounia 136mya, The Gounia and the last clade of Xenosynapsids coexisted in the shadow of the Dinoavesia until the next Extinction event that wiped out the Dinoavesia, when this Extinction event occurred not only did it take out the Dinoavesia but also took out the last species of non-gounin Xenosynapsids too, leaving only Gounia to rise.

There were two subclasses, Erpetadontia and Thilastikoudontia, they are distinguished by their teeth, Erpetadontia had completely identical teeth, while Thilastikoudontia had different teeth that serve different function, just like mammalia on Earth. Erpetadontia went extinct before Thilastikoudontia did. On Earth, **Amniotes** are the clade that allowed tetrapods to ditch the water for good by laying shelled eggs, it was originally thought that synapsids we're just a type of reptile, a subclass of reptile, but further evidence in research shows that synapsids are not reptiles, but are a sister group to sauropsids, But on Hume III, Xenosynapsidiformes were a subclass of raptiles, and slowly over time they kept evolving Gounia like traits until eventually becoming Gounia, with Xenosynapsid being what came in between. Synapsida can be broken down into four groups, **Pelycosauria, Therapsid, Cynodontia, and Mammals,** Xenosynapsidomorpha can also be divided into fours, Proimixenosynapsidomorfa, Xenosynapsidiformes, Xenosynapsida, and Gounia.

## The scales, bare skin, and fur controversy!

Just like Therapsids, it is unknown if they all had scales, or if they all were bare skinned, or if they all have fur. This problem goes for all Synapsids on Earth, and all Xenosynapsidomorpha on Hume III, the reason for all this debate is because we found no clear evidence in the fossil record, there is some evidence leaning towards one idea and some evidence leaning towards another. One bit of evidence that leans poured them having fur is there was some fur found in some coprolites AKA fossilized poop, meaning that some of the creatures back then may have had fur, but this doesn't confirm that all did. One bit of evidence that leans towards them being scaly is a fossil sample that actually fossilize some of the stomach skin of the underbelly, showing that it has scaly belly similar to a crocodile, but once again this is not mean that they were all scaly, just this one species, it's possible they could have had both scales and fur, we will never know for sure, maybe. Most A.R.F. researchers have just come to the conclusion that some species were completely covered in fur, some species were completely scaly, some species were completely bare skinned, and some species had a mixture of either two of those things or three of those things, until more concrete evidence comes out this is what we're going with.

## Electricity Levels!

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

Dracosauria unknown

Stelechosypsilistasia unknown.

The reason why it is unknown is because it is hard to find fossilized organs, so it is unknown how many of them kept their electric organs, reduce them, or got rid of them, we will probably never know for sure.

## Intelligence Levels

It is hard to determine smarts from fossils, but we have two things that might help us figure it out, One is using the same technology that helped us guess dinosaur intelligence, and two is using its closest living modern relatives the Gounia. From using the same technology we used on dinosaurs, it is come to the conclusion that most of them had crocodilian levels of intelligence, while a handful of them reached marsupial levels of intelligence, one family of them has had placental mammal levels of intelligence, that family is Suusgrandecerebrotempusidae, and using the same methods we used on the T-Rex in that one study that said the T-Rex was as smart as a chimpanzee, we have found one near human-level intelligence species, it's name is Megaloenkefalo marki, now this either means Monotremia started out with higher intelligence and the only surviving order of that subclass has lost the intelligence or all of these smart Xenosynapsids went extinct and only the slightly dumber ones survived too later evolved into Gounia. But just like what we said for Agrioderma, we don't know how accurate these estimates really are. Computer simulations have been wrong before as technology progresses and updates, and unlike Agrioderma, we don't even have one surviving species to try to guess with, so I guess for now it's just a mystery.

## Anatomy

Their Heads region is where their brain is kept, their brain controls everything in their entire body. Two eyes on eyestalks that can be retracted like a snail, but some species have reduced the eyestalks losing their retractability, and some species have forgone the eyestalks entirely and just have eyes on their head like a normal Tetrapod. Some species still had a parietal eye and some didn't. How good their Vision was, was a mystery for a while, but now using the same technology we used to figure out how good the T-Rexes eyesight was, we now know that their eyesight was on par with Gounia. It is unknown how many of them had external ear holes and how many of them didn't, and how good their hearing was depends on the clade. They probably all had tongues, but how good their sense of taste was is unknown, but it probably depends on the clade. Depending on what subclass they are their teeth could either look different from each other or look identical to each other, Erpetadontia has completely identical teeth, while Thilastikoudontia has teeth that look different from each other and serve different functions, just like mammals. Whether or not their teeth were flat or Sharp depends on what they ate. Their whisacles send electrical signals to other parts of the body telling them what to do, making them somewhat like additional brains. For example, when prey is near and bites or attempts to bite the whisacles, rather than sending signals to the brain which then tells the rest of the body to attack, they will send the signals themselves. Whisacles are prehensile in most clades, most clades have prehensile whisacles, meaning they can use them like how an octopus uses their tentacles to grab stuff, some clades elongated their whisacles to the point where they could be used like arms, other clades reduce them for whatever reason losing the prehensility, they're also used to smell, how good their senes of smell is depends on the clade and the size of the whisacles, bigger whisacles can pick up more smells from farther away, while smaller whisacles can't pick up smells from as far away.

Most of the early clade had a lizard-like body plan, but with a semi erect posture. But they would also take up body plans from all over synapsids on Earth, like the clade Plefsepiso, which has evolved the sail back body plan of Dimetrodon, which is a **Pelycosauria.** One clade Samperdonti, would converging me evolve the same body plan as *Pristerognathus,* which is a **Therapsid.** Another clade Agapito, has evolved the ***Dvinia*** body plan, which is a **Cynodontia.** And the opossum body plan has evolved once in the clade Opososauria, opossums are a **Mammal.** Not only entire body plans have convergently evolved, but traits that I've been seeing in both mammals and Gounies have convergently evolved here, like antlers in the family Cervsauridae, or armadillo armor in the clade Armadillosauria.

Most of them maintain their six legs and have only lost a pair of legs once in the clade Cuatropiernia, strangely enough all of them except for one clade have the seven toes, only one clade has reduced it down to six toes, and it's the same clade that remove the pair of Limbs, Cuatropiernia. Unlike synapsids on Earth, Xenosynapsids try to experiment with bipedalism, a handful of times in a few different clades, but none of them worked out. Some clades have turned the front pair of legs into a pair of arms, some clades have done this with both the front and middle pairs. Most of them had claws, but some didn't. Some of the Aquatic ones had webbed feet. Most of them have a semi-erect posture, but a small number of them have evolved a completely erect posture. Unlike other classes, the tails in this class weren't really used all that much for anything, other than balance, the most adventurous they ever got was a prehensile tail and one species had a tail Club, that's about it.

Most of them probably had fur in some places, scales in other places, and bare skin in some places. There may have been some species that were entirely furry, some species that were entirely scaly, and some species that were completely bare, but we will never know for sure.

Because organs are hard to fossilize we can only go off of assumptions, it is safe to assume they have heart and lungs and all that good stuff, it is unknown how many of them kept the three organs that produce electricity and we were perhaps never know for sure.

## Note: From Boden Müller.

Hello everyone, this is lead researcher and founder of A.R.F. here to let you know that my little brother, Jürgen Müller, wrote this paper on Xenosynapsids, and most of the papers for Septempollicems, he's not taking very seriously by the other researchers, because his theories don't line up with what is currently accepted by science, and he's an alcoholic, so even though he calls them a class, most others agree that it's just a clade, so take all this with a grain of salt.

-Boden Müller

## Taxonomy

Kingdom: Animalisaliena

Phylum: Xenochordata

Subphylum: Psariaskoulikion

Clade: Idiotamcaptionemviventem

Clade: Ilektrikapodia

Clade: Septempollicemiformes

Superclass: Septempollicemsa

Clade Gallinaeveteris

clade Xenosynapsidomorpha

Clade: **Xenosynapsida**

\*\*Subclasses under **Xenosynapsida**\*\*

Subclass: Erpetadontia

Subclass: Thilastikoudontia

\*\*Orders under Erpetadontia\*\*

Order: Synapsidasaur

Order:

\*\*Orders under Thilastikoudontia\*\*

Order: Pelycosavra

Order: Thiriouprosopo

Order: Skyloudontia

Order: Mastikos

Add your own Orders here.

\*\*Clades under this class in no particular order\*\*

Clade: Plefsepiso

Clade: Samperdonti

Clade: Agapito

Clade: Opososauria

Clade: Armadillosauria

Clade: Cuatropiernia

Clade: Gouniomorpha

Clade: Gouniformes

Add your own clades here.