Akatergastodermia

Akatergastodermia (roughly translated into rough scaled skin) are a class of reptile-like mesothermic karcharias, one of two reptile-like classes of Karcharias, the other being Trachydermia. While Trachydermia mostly took up Lepidosauromorpha niches, Akatergastodermia mostly took up Archosauromorpha niches. They have two kinds of scales, scute-like scales, and they have re-evolve the placoid scales of their hhark ancestor. They evolved around 267,000,000 years ago, they evolved from the clade Karchariaslandkarcharia. Their point of origin is Secundoterra, their specific point of origin is either rivers that ran through deserts, swamplands as they were drying up and turning into deserts, or the Forest right by swamplands, their exact point of origin is unknown. Unlike Olisthiroskarcharias, Akatergastodermias give birth to live young with no gills, fully-formed legs, lungs, and waterproof skin that's already covered in scales. The earliest known species in the fossil record was Saurosuchuskarcharia saurosuchuskarcharia, which is only known from one specimen. When colonists arrived on Hume III, the first species of this class discovered was Karchariaskrokodeilou karchariaskrokodeilou (The Sharkodile). Early on the only ecological niches they took up were generalist lizard niches but later on they started to take on crocodilian niches and then they would later give rise to the clade Ntanokarcharia (Dinosharks) as well as the class Iptamenoskarchariasia (Flying Sharks).

Anatomy

Akatergastodermia are the second most shark-like/hhark-like out of any Karcharias, they look like sharks with legs, they even have re-evolved the placoid scales that Olisthiroskarcharias lost, the only thing that makes them not look shark-like is their lack of gills, and they're scute-like scales. On the head region, they have eyes that can curl back into the head just like a great white shark for protection, how good their eyesight is all depends on the clade. Most of them have ampullae, but some have reduced it, while a few others have completely lost it. They have nostrils, how good their sense of smell is all depends on the clade. Some have external ear holes, some don't have external ear holes, some can hear, some can't hear, and how good their hearing is depends on the clade. Most have mouths are full of razor-sharp teeth that can cut through almost anything like a knife, these triangular-shaped teeth are specially designed to kill and eat prey, plant eating clades have flat Square teeth. Akatergastodermia have the ability to continuously regenerate their teeth. They lose at least 20,000 teeth over a lifetime, but each lost tooth can be regrown over a period of days or months. They have a tongue, this tongue is used for taste, how good their sense of taste is, and what flavors they can and can't distinguish all depends on the clade, some clades don't even have taste. Most of them have four legs, but some have lost the second pair of legs. They have no toes, most just have one big claw on the end of their feet. Most have their legs in a sprawling posture, but the clades Ntanokarcharomorpa and Krokodeiloskarchariformes have evolved an erect posture. Most Earth sharks have two dorsal fins, hharks normally have three, but Akatergastodermia, and all other Karcharias, and their closest relatives, and their extinct relatives, have only two or one, with the second one normally being on the tail. All Akatergastodermia have a tail, some have a tail with the second dorsal fin, anal fin, and two tail fins on it, some have a tail with just two tail fins on it, some have two tail fins but they are slightly reduced, and others just have a tail with no fins. They have lost the claspers of their ancestors, and they have instead replace them with true penises, that can be retracted into the cloaca, some clades have two, some have one, and some have one with two heads.

Taxonomy

Kingdom: Animalisaliena

Phylum: Xenochordata

Clade: Karchariaslandkarcharia

Class: **Akatergastodermia**

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**Orders under Akatergastodermia**

 Order: Savreskrokodeilon

 Order: Krokodeiloskarcharia

Add your own clades and orders here

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