recursal/Fanatic-Fandom huggingface dataset:
Ostopiscis

**Ostopiscis** (lit. "bone fish") is a lineage of Cyclopslamina.

## Description

### Anatomy

Ostopiscis are most notable for being the first animals on Nusku with a backbone (like Earth's vertebrates, it is segmented and flexible). They have six spiracles on their back for active respiration, with the front two bearing olfactory chemoreceptors. They have red, iron-based blood. Ostopiscis have five eyes: the central eye (which is the only eye to have a lens) is used for vision, while the four smaller ones are used solely for improving depth perception. They have eight fins used for locomotion and steering (the exact function of each pair of fins varies across lineages), and a single, powerful tail.

Ostopiscis reproduce by rubbing their rears together. The developing young attach themselves to the larger, more fit parent, growing inside nutrient-filled casings and hatching once they are developed enough to live on their own.

Basal Ostopiscis retained the jaw structure of early Cyclopslamina, and had a similar diet of suction-feeding. Clades native to Purpungos reefs have purple dorsal shading and salmon-colored ventral shading.

### History

Ostopiscis evolved in the early Purpungos reefs, driving the basal Cyclopslamina in the shallows to extinction. They were the first animals on Nusku to develop a backbone, making them one of the best swimmers in the early ocean.

Basal Ostopiscis went extinct during the Proto-Nuskuan Extinction.

## Gallery

Basal Ostopiscis oral and digestive anatomy
## Navigation

	+ *Pisceslamimorph*
		- *Pisceslaminae*
			* Pisceslamina
			* *Thalassatestamorph*
				+ *Thalassatestae*
					- Thalassatesta
						* Parvutesta
						* *Archeathalassatesta*
					- Dermatesta
				+ Aspitesta
		- *Archeapodilamina*
			* *Pellislamamorph*
				+ *Pellislaminae*
					- *Pellislaminada*
						* *Patchypoda*
							+ Crassipod
							+ Patchypod
						* Pellislamina
					- Thyreotrichae
				+ Altapod†
			* *Podilamimorph*
				+ *Podilaminae*
					- Podilamina†
					- *Acritestae*
						* Testapod
						* Acritesta
				+ *Cornumorph*
					- Cornugigantas†
					- *Micocornumorph*
						* Cornumini
						* Lapisipenna
	+ *Cyclopslaminae*
		- *Cyclopslamidae*
			* Cyclopslamina†
			* *Dolichocyclopsa*
				+ *Dolichocyclopsamorph*
					- Dolichocyclops
					- Laetuscyclops
				+ *Leptoverma*
					- Leptovermi
					- Plumavermi
		- *Ostopidamorph*
			* Cubiculopsi†
			* *Ostopidea*
				+ **Ostopiscis**†
				+ *Piscisrostra*
					- Piscisrostro†
					- *Eudirostro*
						* *Tyranapsarae*
							+ Tyranapsari†
							+ Novupsari
						* *Dyorostra*
							+ Dyorostro†
 * Acutustoma\*
Acusfyte

**Acusfyte** (lit. "pin plant") were a branch of Velosfyllo and the only known Purpungos to have ever colonized the Sub-Zero zone of Nusku.

## Description

Evolving soon after the ancestral Purpungos, the Acusfytes colonized the sub-zero zone. Due to the cold waters it called home, it had a thin, needle-like body to decrease surface area, and was much smaller than other early Purpungos.

Besides the challenges of living in a frigid environment, the Acusfyte's asexual reproduction left it more vulnerable to disease. It met its end within 8 million years of the emergence of Prototerrafyllo.

## Navigation

	+ *Purpungomorph*
		- Purpungos†
		- *Latafylla*
			* *Latafyllid*
				+ Latafyllo†
				+ *Prototerrafylla*
					- Prototerrafyllo
					- *Euterrafyllo*
						* *Euterrafyllomorph*
							+ *Terrafyllomorph*
								- *Terrafyte*
									* Bulbufyte
									* Terrafyllo
								- Latusfyte
							+ Brevefyte
						* Erectufolius
							+ Erectufyte
							+ Hamafolius
			* Simafolium†
	+ *Euvelosfyllo*†
		- Velosfyllo†
		- **Acusfyte**†
Lapisipenna

**Lapisipenna** (lit. "mud wing") are a freshwater clade of Cornumini.

## Description

Lapisipenna are found in freshwater rivers, feeding on algae from the river bed alongside the Acritesta. Much like the closely related Cornumini, Lapisipenna is small, swims with its back four pairs of fins, and moves in swarms (albeit not as large as their oceanic cousins). Aside from its muddy-coloration (used to help it blend into the murky water), the Lapisipenna are unique for having minimized their front pairs of fins, and their mouths face downward rather than forward like other *Cornumorphs*.

Lapisipenna are one of the surviving clades of the Proto-Nuskuan Extinction.

## Navigation

	+ *Pisceslamimorph*
		- *Pisceslaminae*
			* Pisceslamina
			* *Thalassatestamorph*
				+ *Thalassatestae*
					- Thalassatesta
						* Parvutesta
						* *Archeathalassatesta*
					- Dermatesta
				+ Aspitesta
		- *Archeapodilamina*
			* *Pellislamamorph*
				+ *Pellislaminae*
					- *Pellislaminada*
						* *Patchypoda*
							+ Crassipod
							+ Patchypod
						* Pellislamina
					- Thyreotrichae
				+ Altapod†
			* *Podilamimorph*
				+ *Podilaminae*
					- Podilamina†
					- *Acritestae*
						* Testapod
						* Acritesta
				+ *Cornumorph*
					- Cornugigantas†
					- *Micocornumorph*
						* Cornumini
						* **Lapisipenna**
	+ *Cyclopslaminae*
		- *Cyclopslamidae*
			* Cyclopslamina†
			* *Dolichocyclopsa*
				+ *Dolichocyclopsamorph*
					- Dolichocyclops
					- Laetuscyclops
				+ *Leptoverma*
					- Leptovermi
					- Plumavermi
		- *Ostopidamorph*
			* Cubiculopsi†
			* *Ostopidea*
				+ Ostopiscis†
				+ *Piscisrostra*
					- Piscisrostro†
					- *Eudirostro*
						* *Tyranapsarae*
							+ Tyranapsari†
							+ Novupsari
						* *Dyorostra*
							+ Dyorostro†
 * Acutustoma\*
Tyranapsari

**Tyranapsari** (lit. "tyrant fish") are a branch of Ostopiscis.

## Description

### Anatomy & Lifestyle

The Tyranapsari are predatory hunters, although their exact prey items are dependent somewhat on the Tyranapsari's stage of life: the younger the Tyranapsari, the smaller the prey will likely be. They possess a sharp, serrated beak, and long grasping arms lined with serrations, allowing them to grab and process prey. They also possess a more defined and specialized dorsal fin. Like all Dyorostro, Tyranapsari bear a lateral line system to help them detect vibrations and pressure changes in the water.

Tyranapsari are social creatures, staying with their pod siblings for their entire life: however, they will not interact with members outside of their pod except for mating purposes. A pod of Tyranapsari may consist of as many as twenty members.

### History

Tyranapsari first appeared in the sub-zero zone of Nusku before moving into warmer regions. They are the first known clade of Ostopiscis to employ active hunting, and the only known predators of Cornugigantas.

Basal Tyranapsari met their end during the Proto-Nuskuan Extinction, surviving only through their cousins Novupsari.

## Navigation

	+ *Pisceslamimorph*
		- *Pisceslaminae*
			* Pisceslamina
			* *Thalassatestamorph*
				+ *Thalassatestae*
					- Thalassatesta
						* Parvutesta
						* *Archeathalassatesta*
					- Dermatesta
				+ Aspitesta
		- *Archeapodilamina*
			* *Pellislamamorph*
				+ *Pellislaminae*
					- *Pellislaminada*
						* *Patchypoda*
							+ Crassipod
							+ Patchypod
						* Pellislamina
					- Thyreotrichae
				+ Altapod†
			* *Podilamimorph*
				+ *Podilaminae*
					- Podilamina†
					- *Acritestae*
						* Testapod
						* Acritesta
				+ *Cornumorph*
					- Cornugigantas†
					- *Micocornumorph*
						* Cornumini
						* Lapisipenna
	+ *Cyclopslaminae*
		- *Cyclopslamidae*
			* Cyclopslamina†
			* *Dolichocyclopsa*
				+ *Dolichocyclopsamorph*
					- Dolichocyclops
					- Laetuscyclops
				+ *Leptoverma*
					- Leptovermi
					- Plumavermi
		- *Ostopidamorph*
			* Cubiculopsi†
			* *Ostopidea*
				+ Ostopiscis†
				+ *Piscisrostra*
					- Piscisrostro†
					- *Eudirostro*
						* *Tyranapsarae*
							+ **Tyranapsari**†
							+ Novupsari
						* *Dyorostra*
							+ Dyorostro†
 * Acutustoma\*
Terrafyllo

**Terrafyllo** (lit. "land-leaf") is a clade of Purpungos, comprising all terrestrial representatives.

## Description

### Composition

Compared to aquatic Purpungos, Terrafyllo have thicker skin, allowing for better water retention. Much like plants on Earth, Terrafyllo use stomata to take in carbon dioxide from the air and photosynthesize: due to the lack of a day-or-night cycle, the cycle of stomata opening and closing is not based on light levels, although the exact mechanism remains unclear. Terrafyllo also replace their leaves rather frequently as an additional adaptation to the constant sunlight.

As a descendant of Prototerrafyllo, Terrafyllo uses sexual reproduction: the male gametangium emerges from the top of the stem, only growing when it is time to reproduce. Once a leaf receives enough male gametes, it becomes the female gametangium and starts producing its own gametes (although no more than 2-3 female gametangia may exist at a time on a single Terrafyllo). In particular, the leaves of Terrafyllo are covered in hooks to catch the hairs from male gametes. Fertilized cells then become seeds, and are blown away by the wind.

### History

Evolving on the coasts of Nusku's pupil, Terrafyllo were the first Purpungos to obtain a permanent terrestrial presence. In doing so, they permanently changed the environment, setting off a cascade of events that led to the second wave of the Proto-Nuskuan Extinction. The Terrafyllo themselves survived this extinction event, paving the way for the new biological era.

## Navigation

	+ *Purpungomorph*
		- Purpungos†
		- *Latafylla*
			* *Latafyllid*
				+ Latafyllo†
				+ *Prototerrafylla*
					- Prototerrafyllo
					- *Euterrafyllo*
						* *Euterrafyllomorph*
							+ *Terrafyllomorph*
								- *Terrafyte*
									* Bulbufyte
									* **Terrafyllo**
								- Latusfyte
							+ Brevefyte
						* Erectufolius
							+ Erectufyte
							+ Hamafolius
			* Simafolium†
	+ *Euvelosfyllo*†
		- Velosfyllo†
		- Acusfyte†
Halayapileus

Halayapileus (lit. "jelly hat") is a clade of Deorsumsalm.

## Description

### Etymology

"Halayapileus" derives from the Tagalog *halaya* ("jelly") and the Latin *pileus* ("hat").

### Overview

Halayapileus are characterized by their colossal mouths, which span their entire widths. The undulation of this mouth is used as a form of propulsion similar to jellyfish. The inside of the Halayapileus's mouth has a rough, sticky surface, allowing it to capture microscopic prey along the surface of their external stomach. Like their ancestors, they exhibit broadcast spawning.

## Navigation

	+ Sursumsalm
		- Wiseongcaulos
	+ Deorsumsalm
		- *Halayamorph*
			* **Halayapileus**
			* Platynoche
		- *Polzatmorph*
			* Caudahuzi
			* *Polztimorpha*
				+ Poltzimorph
				+ Sagarumorph
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Podilamina

**Podilamina** (lit. "legged plate") is a lineage of Pisceslamina.

## Description

### Anatomy

Podilamina have notably more anatomical complexity than their ancestors, bearing five pairs of limbs and four eyes. They breathe through two spiracles, normally found on their back: these spiracles can close to prevent unwanted particles from entering, enabling active respiration. These spiracles also host their chemoreceptors, which act as their sense of smell. They also bear vibration-sensitive setae on their back, which serve as a hearing mechanism. They possess red, iron-based blood.

The reproductive pores of Podilamina are located at their rear: when mating, two Podilamina will rub their rears together to collect the other's gametes. The fertilized cells will attach themselves to their parent, receiving nutrients from their host until they are developed enough to survive on their own. Unlike basal Pisceslamina, Podilamina no longer use their chemoreceptors for reproduction aid, having repurposed them into their sense of smell.

### History

Podilamina developed in response to predatory pressures from the newly evolved Trullamorphs. The first Podilamina remained benthic, and used their new adaptations (like their limbs and improved sensory hardware) to detect and avoid predators. They were larger than basal Pisceslamina (albeit only 5cm long on average), granting them further protection from their predators, and had earthen coloration as a means of camouflage. Their diet continued to contain marine snow, although some species consumed basal Pisceslamina as well.

Podilamina diversified further over the next 45 million years, colonizing the sub-zero zone, the deep sea, and even freshwater habitats. Several lineages, including the basal varieties, met their end during the Proto-Nuskuean Extinction Event. However, two of its descendants, the intertidal specialist Patchypod, and the river-dwelling Acritesta, both managed to become one of the only fully terrestrial clades.

## Navigation

	+ *Pisceslamimorph*
		- *Pisceslaminae*
			* Pisceslamina
			* *Thalassatestamorph*
				+ *Thalassatestae*
					- Thalassatesta
						* Parvutesta
						* *Archeathalassatesta*
					- Dermatesta
				+ Aspitesta
		- *Archeapodilamina*
			* *Pellislamamorph*
				+ *Pellislaminae*
					- *Pellislaminada*
						* *Patchypoda*
							+ Crassipod
							+ Patchypod
						* Pellislamina
					- Thyreotrichae
				+ Altapod†
			* *Podilamimorph*
				+ *Podilaminae*
					- **Podilamina**†
					- *Acritestae*
						* Testapod
						* Acritesta
				+ *Cornumorph*
					- Cornugigantas†
					- *Micocornumorph*
						* Cornumini
						* Lapisipenna
	+ *Cyclopslaminae*
		- *Cyclopslamidae*
			* Cyclopslamina†
			* *Dolichocyclopsa*
				+ *Dolichocyclopsamorph*
					- Dolichocyclops
					- Laetuscyclops
				+ *Leptoverma*
					- Leptovermi
					- Plumavermi
		- *Ostopidamorph*
			* Cubiculopsi†
			* *Ostopidea*
				+ Ostopiscis†
				+ *Piscisrostra*
					- Piscisrostro†
					- *Eudirostro*
						* *Tyranapsarae*
							+ Tyranapsari†
							+ Novupsari
						* *Dyorostra*
							+ Dyorostro†
 * Acutustoma\*
Arthrocollis

**Arthrocollis** (lit. "joint neck") is a clade of deep-sea Loricatorumstoma.

## Description

Arthrocollis are found in the deep sea, feeding on carcasses from whale falls and the creatures that gather around them. It has the most segmented body out of any Loricatorumstoma lineage, especially around their neck, allowing them to adjust their position quickly in the water to snatch prey. They bear a red coloration, due to red light being virtually absent in the deep sea, and a dorsal spike to protect them from attacks above.

Basal Arthrocollis went extinct during the Proto-Nuskuan Extinction: all known extant Arthrocollis belong to the later Laetustoma lineage.

## Navigation

	+ Manuseptum
	+ *Caudabranchids*
		- *Eutrullamorph*
			* *Trullamorphidae*
				+ *Trullamorpha*
					- Trullamorph†
					- Lepedastom†
				+ Maurotrulla
			* Serrastome
		- *Caudabranchae*
			* *Eucatorumstoma*
				+ Morsdontia†
				+ *Loricatorumstomamorph*
					- *Arthrocollae*
						* **Arthrocollis**†
						* Laetustoma
					- *Loricatorumstomae*
						* Loricatorumstoma†
						* *Repolimitae*
							+ Repolimita
							+ Arthropulma

* *Caudabranchiis α*
* *Caudabranchiis β*
* *Caudabranchiis γ*
* *Caudabranchiis δ*
* *Caudabranchiis ε*
* *Caudabranchiis ζ*
Caudabranchiis β

***Caudabranchiis β*** was a basal species of Caudabranchiis.

## Description

*Caudabranchiis β* was the first species in the lineage that would lead to the Trullamorphs. Measuring 3.5cm long, the creature had an early iteration of the shovel-like structure indicative of the Trullamorph clade, and used in the same manner of scooping creatures off the sea floor, although their filter-feeding structures had yet to harden.

The gill structures on *Caudabranchiis β* were gathered into groups around the fins and tail, a trait that all advanced Caudabranchiis lineages would adapt.

## Navigation

	+ Manuseptum
	+ *Caudabranchids*
		- *Eutrullamorph*
			* *Trullamorphidae*
				+ *Trullamorpha*
					- Trullamorph†
					- Lepedastom†
				+ Maurotrulla
			* Serrastome
		- *Caudabranchae*
			* *Eucatorumstoma*
				+ Morsdontia†
				+ *Loricatorumstomamorph*
					- *Arthrocollae*
						* Arthrocollis†
						* Laetustoma
					- *Loricatorumstomae*
						* Loricatorumstoma†
						* *Repolimitae*
							+ Repolimita
							+ Arthropulma

* *Caudabranchiis α*
* ***Caudabranchiis β***
* *Caudabranchiis γ*
* *Caudabranchiis δ*
* *Caudabranchiis ε*
* *Caudabranchiis ζ*
Cubiculopsi

**Cubiculopsi** (lit. "chamber face") was a clade of Ostopiscis found in Nusku's sclera.

## Description

Having diverged from the main branch of Ostopiscis earlier than any other clade, Cubiculopsi was the most recognizably distinct in anatomy. It retained the ancestral diet of marine snow, albeit with several changes in its jaw structure. Its four mouths functioned in a complex filtration system: the central two mouths would suck water into chambers in between their throats and stomach. The outer two mouths would blow water out, with filters at the base of their throats trapping food particles.

Cubiculopsi would often anchor itself to Simafolium to filter-feed, which it used as a model for mimicry. As part of this mimicry, Cubiculopsi had a dark purple body and rear fins with paler purple main fins. Its rear pair of fins were much longer, and were used to cling to Simafolium.

Cubiculopsi was one of several lineages of Ostopiscis to meet its end during the Proto-Nuskuan Extinction: it is unclear whether the demise of the Simafolium played a role in Cubiculopsi's extinction.

## Navigation

	+ *Pisceslamimorph*
		- *Pisceslaminae*
			* Pisceslamina
			* *Thalassatestamorph*
				+ *Thalassatestae*
					- Thalassatesta
						* Parvutesta
						* *Archeathalassatesta*
					- Dermatesta
				+ Aspitesta
		- *Archeapodilamina*
			* *Pellislamamorph*
				+ *Pellislaminae*
					- *Pellislaminada*
						* *Patchypoda*
							+ Crassipod
							+ Patchypod
						* Pellislamina
					- Thyreotrichae
				+ Altapod†
			* *Podilamimorph*
				+ *Podilaminae*
					- Podilamina†
					- *Acritestae*
						* Testapod
						* Acritesta
				+ *Cornumorph*
					- Cornugigantas†
					- *Micocornumorph*
						* Cornumini
						* Lapisipenna
	+ *Cyclopslaminae*
		- *Cyclopslamidae*
			* Cyclopslamina†
			* *Dolichocyclopsa*
				+ *Dolichocyclopsamorph*
					- Dolichocyclops
					- Laetuscyclops
				+ *Leptoverma*
					- Leptovermi
					- Plumavermi
		- *Ostopidamorph*
			* **Cubiculopsi**†
			* *Ostopidea*
				+ Ostopiscis†
				+ *Piscisrostra*
					- Piscisrostro†
					- *Eudirostro*
						* *Tyranapsarae*
							+ Tyranapsari†
							+ Novupsari
						* *Dyorostra*
							+ Dyorostro†
 * Acutustoma\*
Cornumini

**Cornumini** (lit. "winged mini") are a clade of Podilamina.

## Description

### Anatomy

Cornumini are small-sized filter feeders, being roughly equivalent to krill on Earth: they are far smaller than the related Cornugigantas, measuring only about 6cm in length. Due to their smaller size, they are highly R-selective, and have regrown setae on their back as a defense mechanism.

As a *Cornumorph*, Cornumini uses fin-driven swimming: its rear two pairs of fins act as rudders, while the second and third pairs acts as the primary locomotion fins. The first pair are used for gathering food rather than locomotion.

### History

First evolving in the sub-zero zone, the Cornumini accomplished what their larger cousins Cornugigantas could not and expanded into different climate zones across Nusku. Somewhat ironically, they became prey items for basal Caudabranchiis and later the Acutamorphs.

Corumini were among the survivors of the Proto-Nuskuan Extinction.

## Navigation

	+ *Pisceslamimorph*
		- *Pisceslaminae*
			* Pisceslamina
			* *Thalassatestamorph*
				+ *Thalassatestae*
					- Thalassatesta
						* Parvutesta
						* *Archeathalassatesta*
					- Dermatesta
				+ Aspitesta
		- *Archeapodilamina*
			* *Pellislamamorph*
				+ *Pellislaminae*
					- *Pellislaminada*
						* *Patchypoda*
							+ Crassipod
							+ Patchypod
						* Pellislamina
					- Thyreotrichae
				+ Altapod†
			* *Podilamimorph*
				+ *Podilaminae*
					- Podilamina†
					- *Acritestae*
						* Testapod
						* Acritesta
				+ *Cornumorph*
					- Cornugigantas†
					- *Micocornumorph*
						* **Cornumini**
						* Lapisipenna
	+ *Cyclopslaminae*
		- *Cyclopslamidae*
			* Cyclopslamina†
			* *Dolichocyclopsa*
				+ *Dolichocyclopsamorph*
					- Dolichocyclops
					- Laetuscyclops
				+ *Leptoverma*
					- Leptovermi
					- Plumavermi
		- *Ostopidamorph*
			* Cubiculopsi†
			* *Ostopidea*
				+ Ostopiscis†
				+ *Piscisrostra*
					- Piscisrostro†
					- *Eudirostro*
						* *Tyranapsarae*
							+ Tyranapsari†
							+ Novupsari
						* *Dyorostra*
							+ Dyorostro†
 * Acutustoma\*
Thyreotrichae

**Thyreotrichae** (lit. "warm hair") is a deep-sea clade of Pellislamina.

## Description

Thyreotrichae are found exclusively around geothermal vents, subsisting on Aspitesta and Leptovermi. As a means of protecting themselves from the extreme temperatures of their home, they insulate themselves in a bacterial coat, which is facilitated by the setae which cover their entire body. The hair on their rear back is shed before mating, and as a result the young attach to the parent for a very brief time. The larvae, which at that point only have setae on their feeding arms, float through the water filter-feeding until it reaches a certain size: it then enters hibernation and falls to the sea floor. The juveniles will eat on different Leptovermi until they are old enough to eat the Aspitesta.

Thyreotrichae was among the clades that survive the Proto-Nuskuan Extinction.

## Navigation

	+ *Pisceslamimorph*
		- *Pisceslaminae*
			* Pisceslamina
			* *Thalassatestamorph*
				+ *Thalassatestae*
					- Thalassatesta
						* Parvutesta
						* *Archeathalassatesta*
					- Dermatesta
				+ Aspitesta
		- *Archeapodilamina*
			* *Pellislamamorph*
				+ *Pellislaminae*
					- *Pellislaminada*
						* *Patchypoda*
							+ Crassipod
							+ Patchypod
						* Pellislamina
					- **Thyreotrichae**
				+ Altapod†
			* *Podilamimorph*
				+ *Podilaminae*
					- Podilamina†
					- *Acritestae*
						* Testapod
						* Acritesta
				+ *Cornumorph*
					- Cornugigantas†
					- *Micocornumorph*
						* Cornumini
						* Lapisipenna
	+ *Cyclopslaminae*
		- *Cyclopslamidae*
			* Cyclopslamina†
			* *Dolichocyclopsa*
				+ *Dolichocyclopsamorph*
					- Dolichocyclops
					- Laetuscyclops
				+ *Leptoverma*
					- Leptovermi
					- Plumavermi
		- *Ostopidamorph*
			* Cubiculopsi†
			* *Ostopidea*
				+ Ostopiscis†
				+ *Piscisrostra*
					- Piscisrostro†
					- *Eudirostro*
						* *Tyranapsarae*
							+ Tyranapsari†
							+ Novupsari
						* *Dyorostra*
							+ Dyorostro†
 * Acutustoma\*
Laetustoma

**Laetustoma** (lit. "bright mouth") is a clade of Arthrocollis.

## Description

Laetustoma are the second clade on Nusku to develop bioluminescence, which they use to attract prey items. While the Laetustoma themselves are not bioluminescent, they have a symbiotic relationship with bacteria that live in their gas pockets. The exact number of glowing pockets varies across species, although all species have a single central pocket located at the hinge of its jaw.

Following the Proto-Nuskuan Extinction, Laetustoma has become the sole remaining branch of Arthrocollis.

## Navigation

	+ Manuseptum
	+ *Caudabranchids*
		- *Eutrullamorph*
			* *Trullamorphidae*
				+ *Trullamorpha*
					- Trullamorph†
					- Lepedastom†
				+ Maurotrulla
			* Serrastome
		- *Caudabranchae*
			* *Eucatorumstoma*
				+ Morsdontia†
				+ *Loricatorumstomamorph*
					- *Arthrocollae*
						* Arthrocollis†
						* **Laetustoma**
					- *Loricatorumstomae*
						* Loricatorumstoma†
						* *Repolimitae*
							+ Repolimita
							+ Arthropulma

* *Caudabranchiis α*
* *Caudabranchiis β*
* *Caudabranchiis γ*
* *Caudabranchiis δ*
* *Caudabranchiis ε*
* *Caudabranchiis ζ*
Aspitesta

**Aspitesta** (lit. "shield shell") is a deep-sea clade of Thalassatesta.

## Description

Aspitesta are found anchored along hydrothermal vents, filtering chemosynthetic plankton from the water. To shield themselves from the vent's heat, an outgrowth of the shell grows along the side facing the direction of the hot water. Their combs are oriented diagonally so as to not be impeded by the outgrowth. Juvenile Aspitesta are planktonic, sinking to the ocean floor once a chemical or temperature trigger is activated: it enters a state of hibernation until it reaches the bottom.

Aspitesta are among the groups that survived the Proto-Nuskuan Extinction.

## Navigation

	+ *Pisceslamimorph*
		- *Pisceslaminae*
			* Pisceslamina
			* *Thalassatestamorph*
				+ *Thalassatestae*
					- Thalassatesta
						* Parvutesta
						* *Archeathalassatesta*
					- Dermatesta
				+ **Aspitesta**
		- *Archeapodilamina*
			* *Pellislamamorph*
				+ *Pellislaminae*
					- *Pellislaminada*
						* *Patchypoda*
							+ Crassipod
							+ Patchypod
						* Pellislamina
					- Thyreotrichae
				+ Altapod†
			* *Podilamimorph*
				+ *Podilaminae*
					- Podilamina†
					- *Acritestae*
						* Testapod
						* Acritesta
				+ *Cornumorph*
					- Cornugigantas†
					- *Micocornumorph*
						* Cornumini
						* Lapisipenna
	+ *Cyclopslaminae*
		- *Cyclopslamidae*
			* Cyclopslamina†
			* *Dolichocyclopsa*
				+ *Dolichocyclopsamorph*
					- Dolichocyclops
					- Laetuscyclops
				+ *Leptoverma*
					- Leptovermi
					- Plumavermi
		- *Ostopidamorph*
			* Cubiculopsi†
			* *Ostopidea*
				+ Ostopiscis†
				+ *Piscisrostra*
					- Piscisrostro†
					- *Eudirostro*
						* *Tyranapsarae*
							+ Tyranapsari†
							+ Novupsari
						* *Dyorostra*
							+ Dyorostro†
 * Acutustoma\*
Erectufyte

**Erectufyte** (lit. "upright plant") are a clade of Terrafyllo.

## Description

Erectufytes are one of the earliest radiations of Terrafyllo, having evolved in the tropics near Nusku's subsolar point.

Erectufytes grow leaves along the entire length of their stem, discarding older leaves as they near the bottom. While they lack rigid support tissues such as wood, they nevertheless comprise the tallest flora yet observed on Nusku, with some species reaching 1.8 meters in height.

## Navigation

	+ *Purpungomorph*
		- Purpungos†
		- *Latafylla*
			* *Latafyllid*
				+ Latafyllo†
				+ *Prototerrafylla*
					- Prototerrafyllo
					- *Euterrafyllo*
						* *Euterrafyllomorph*
							+ *Terrafyllomorph*
								- *Terrafyte*
									* Bulbufyte
									* Terrafyllo
								- Latusfyte
							+ Brevefyte
						* Erectufolius
							+ **Erectufyte**
							+ Hamafolius
			* Simafolium†
	+ *Euvelosfyllo*†
		- Velosfyllo†
		- Acusfyte†
Veerus' Stand

This entity is the stand of Veerus. It shares the same aura of mystery as its user through its name, which is **currently unknown**.

It is the second stand that is introduced in the series.

## Appearance

The stand's appearance shares similarities to clerics or mages from medieval times: a surplice with wide sleeves is worn over the body and a hood is covering its head. It has an unsettling blue colored skeletal face with small piercing green glowing eyes.

## Personality

As stands often reflect their user's personality through their own, this one is almost no exception: it is silent, indifferent but has an uncovered face, showing a permanently locked in angry and grimacing facial expression.

## Abilities

The stand's abilities mostly remain a mystery, but seem rather plausible to be related to the Distortion one way or another, as Veerus' connection to the Aliens seems to indicate as such.

* **Organic Absorption**

First shown in EP:01, the stand can absorb the remaining organic matter of corpses, possibly for sustenance or power growth.

* **Ghoulification**

It was evidenced that Veerus' stand is the source of the ghoul-like Pyros that debuted in EP:01 and returned once again in EP:04.

The stand can resurrect and "ghoulify" dead corpses by physical contact. It will then be able to transmit its disease through the body's circulatory system, resurrecting it as a ghoul shortly afterwards, loyal to Veerus.

## Trivia

* The stand's head is a cosmetic from the workshop called Dr.Death, created by Psyke, Greg and Big Bob.
Latusfyte

**Latusfyte** (lit. "side leaf") is a clade of Terrafyllo.

## Description

Latusfyte is found in the northern temperate regions of Nusku. Due to the angle of the sun in such regions, Latusfyte grows its leaves sideways to maximize sunlight exposure.

## Navigation

	+ *Purpungomorph*
		- Purpungos†
		- *Latafylla*
			* *Latafyllid*
				+ Latafyllo†
				+ *Prototerrafylla*
					- Prototerrafyllo
					- *Euterrafyllo*
						* *Euterrafyllomorph*
							+ *Terrafyllomorph*
								- *Terrafyte*
									* Bulbufyte
									* Terrafyllo
								- **Latusfyte**
							+ Brevefyte
						* Erectufolius
							+ Erectufyte
							+ Hamafolius
			* Simafolium†
	+ *Euvelosfyllo*†
		- Velosfyllo†
		- Acusfyte†
Parvutesta

**Parvutesta** (lit. "small shell") are a clade of Thalassatesta found in Nusku's intertidal zone.

## Description

Parvutesta are native to tidal pools in Nusku's intertidal zone. During low tide, these organisms retract their arms and pull a part of their shells over their mouth openings, creating a watertight seal to minimize moisture loss. At high tide, they store as much water as possible in special reserves, prolonging the time they can endure above water.

Compared to other Thalassatesta, Parvutesta have a rather short, broad shape.

During the Proto-Nuskuan extinction, their numbers were decreased, which was the event that inspired the Patchypods to become fully terrestrial.

## Navigation

	+ *Pisceslamimorph*
		- *Pisceslaminae*
			* Pisceslamina
			* *Thalassatestamorph*
				+ *Thalassatestae*
					- Thalassatesta
						* **Parvutesta**
						* *Archeathalassatesta*
					- Dermatesta
				+ Aspitesta
		- *Archeapodilamina*
			* *Pellislamamorph*
				+ *Pellislaminae*
					- *Pellislaminada*
						* *Patchypoda*
							+ Crassipod
							+ Patchypod
						* Pellislamina
					- Thyreotrichae
				+ Altapod†
			* *Podilamimorph*
				+ *Podilaminae*
					- Podilamina†
					- *Acritestae*
						* Testapod
						* Acritesta
				+ *Cornumorph*
					- Cornugigantas†
					- *Micocornumorph*
						* Cornumini
						* Lapisipenna
	+ *Cyclopslaminae*
		- *Cyclopslamidae*
			* Cyclopslamina†
			* *Dolichocyclopsa*
				+ *Dolichocyclopsamorph*
					- Dolichocyclops
					- Laetuscyclops
				+ *Leptoverma*
					- Leptovermi
					- Plumavermi
		- *Ostopidamorph*
			* Cubiculopsi†
			* *Ostopidea*
				+ Ostopiscis†
				+ *Piscisrostra*
					- Piscisrostro†
					- *Eudirostro*
						* *Tyranapsarae*
							+ Tyranapsari†
							+ Novupsari
						* *Dyorostra*
							+ Dyorostro†
 * Acutustoma\*
Wiseongcaulos

**Wiseongcaulos** is a clade of Sursumsalm.

## Description

### Etymology

The name "Wiseongcaulos" derives from the Korean 위성 (*wiseong;* "satellite") and the Latin *caulos*

### Overview

The Wiseongcaulos are sessile filter feeders that rest on Mazu's ocean floors.

## Navigation

	+ Sursumsalm
		- **Wiseongcaulos**
	+ Deorsumsalm
		- *Halayamorph*
			* Halayapileus
			* Platynoche
		- *Polzatmorph*
			* Caudahuzi
			* *Polztimorpha*
				+ Poltzimorph
				+ Sagarumorph
Cyclopslamina

**Cyclopslamina** (lit. "cyclops plates") is a lineage of Pisceslamina.

## Description

### Anatomy

All Cyclopslamina have a single primary eye, although some lineages have developed additional eyes for improved depth perception.

### History

First appearing in early Purpungos reefs, Cyclopslamina were the first creatures on Nusku to evolve eyes. The first Cyclopslamina were otherwise fairly similar to other Pisceslamina, although bearing a more streamlined body and wider tail. While they were incapable of true swimming, they were able of propelling themselves in short bursts by undulating their tail back and forth.

Basal Cyclopslamina were driven extinct after the emergence of the Ostopiscis.

## Navigation

	+ *Pisceslamimorph*
		- *Pisceslaminae*
			* Pisceslamina
			* *Thalassatestamorph*
				+ *Thalassatestae*
					- Thalassatesta
						* Parvutesta
						* *Archeathalassatesta*
					- Dermatesta
				+ Aspitesta
		- *Archeapodilamina*
			* *Pellislamamorph*
				+ *Pellislaminae*
					- *Pellislaminada*
						* *Patchypoda*
							+ Crassipod
							+ Patchypod
						* Pellislamina
					- Thyreotrichae
				+ Altapod†
			* *Podilamimorph*
				+ *Podilaminae*
					- Podilamina†
					- *Acritestae*
						* Testapod
						* Acritesta
				+ *Cornumorph*
					- Cornugigantas†
					- *Micocornumorph*
						* Cornumini
						* Lapisipenna
	+ *Cyclopslaminae*
		- *Cyclopslamidae*
			* **Cyclopslamina**†
			* *Dolichocyclopsa*
				+ *Dolichocyclopsamorph*
					- Dolichocyclops
					- Laetuscyclops
				+ *Leptoverma*
					- Leptovermi
					- Plumavermi
		- *Ostopidamorph*
			* Cubiculopsi†
			* *Ostopidea*
				+ Ostopiscis†
				+ *Piscisrostra*
					- Piscisrostro†
					- *Eudirostro*
						* *Tyranapsarae*
							+ Tyranapsari†
							+ Novupsari
						* *Dyorostra*
							+ Dyorostro†
 * Acutustoma\*
Nuskuzoa

**Nuskuzoa** (lit. "Nusku animals") is a biological kingdom on Nusku roughly equivalent to terrestrial Animalia.

## Description

Nuskuzoa is comprised of multicellular heterotrophic organisms, best described as "animals". All known Nuskuzoa derive from one of two phylum: Manuseptum or Pisceslamina. The groups covered represent only a small fraction of the biodiversity found on the planet, as mapping the planet's entire biosphere would be impractical.

There are currently no terrestrial groups of Nuskuzoa, as terrestrial flora has evolved quite recently. However, there are representatives of life in Nusku's midnight zone, fueled by geothermal vents.

## Notes

* Prior to Episode 3, the kingdom was marked as "Alienanimalis".

## Navigation

	+ Manuseptum
	+ *Caudabranchids*
		- *Eutrullamorph*
			* *Trullamorphidae*
				+ *Trullamorpha*
					- Trullamorph†
					- Lepedastom†
				+ Maurotrulla
			* Serrastome
		- *Caudabranchae*
			* *Eucatorumstoma*
				+ Morsdontia†
				+ *Loricatorumstomamorph*
					- *Arthrocollae*
						* Arthrocollis†
						* Laetustoma
					- *Loricatorumstomae*
						* Loricatorumstoma†
						* *Repolimitae*
							+ Repolimita
							+ Arthropulma

* *Caudabranchiis α*
* *Caudabranchiis β*
* *Caudabranchiis γ*
* *Caudabranchiis δ*
* *Caudabranchiis ε*
* *Caudabranchiis ζ*

	+ *Pisceslamimorph*
		- *Pisceslaminae*
			* Pisceslamina
			* *Thalassatestamorph*
				+ *Thalassatestae*
					- Thalassatesta
						* Parvutesta
						* *Archeathalassatesta*
					- Dermatesta
				+ Aspitesta
		- *Archeapodilamina*
			* *Pellislamamorph*
				+ *Pellislaminae*
					- *Pellislaminada*
						* *Patchypoda*
							+ Crassipod
							+ Patchypod
						* Pellislamina
					- Thyreotrichae
				+ Altapod†
			* *Podilamimorph*
				+ *Podilaminae*
					- Podilamina†
					- *Acritestae*
						* Testapod
						* Acritesta
				+ *Cornumorph*
					- Cornugigantas†
					- *Micocornumorph*
						* Cornumini
						* Lapisipenna
	+ *Cyclopslaminae*
		- *Cyclopslamidae*
			* Cyclopslamina†
			* *Dolichocyclopsa*
				+ *Dolichocyclopsamorph*
					- Dolichocyclops
					- Laetuscyclops
				+ *Leptoverma*
					- Leptovermi
					- Plumavermi
		- *Ostopidamorph*
			* Cubiculopsi†
			* *Ostopidea*
				+ Ostopiscis†
				+ *Piscisrostra*
					- Piscisrostro†
					- *Eudirostro*
						* *Tyranapsarae*
							+ Tyranapsari†
							+ Novupsari
						* *Dyorostra*
							+ Dyorostro†
 * Acutustoma\*
Piscisrostro

**Piscisrostro** (lit. "beak fish") is a clade of Ostopiscis.

## Description

### Anatomy

The main divergence between Piscisrostro and basal Ostopiscis is the development of their jaw structure: the ancestral outer mouths have adapted into tentacle-like grasping arms (although these arms have become vestigal in certain lineages), while the inner two mouths have united into a beak made of the same material as their skeleton. This beak branches into two throats, a remnant of their ancestral anatomy.

### History

Piscisrostro first appeared in the early Purpungos reefs, having evolved to hunt and eat Thalassatesta: their suction cup-like grasping arms would be used to pull the shells open and pass the nutrient-rich insides into the beak.

All basal Piscisrostro, along with a number of lineages, went extinct during the Proto-Nuskuan Mass Extinction.

## Navigation

	+ *Pisceslamimorph*
		- *Pisceslaminae*
			* Pisceslamina
			* *Thalassatestamorph*
				+ *Thalassatestae*
					- Thalassatesta
						* Parvutesta
						* *Archeathalassatesta*
					- Dermatesta
				+ Aspitesta
		- *Archeapodilamina*
			* *Pellislamamorph*
				+ *Pellislaminae*
					- *Pellislaminada*
						* *Patchypoda*
							+ Crassipod
							+ Patchypod
						* Pellislamina
					- Thyreotrichae
				+ Altapod†
			* *Podilamimorph*
				+ *Podilaminae*
					- Podilamina†
					- *Acritestae*
						* Testapod
						* Acritesta
				+ *Cornumorph*
					- Cornugigantas†
					- *Micocornumorph*
						* Cornumini
						* Lapisipenna
	+ *Cyclopslaminae*
		- *Cyclopslamidae*
			* Cyclopslamina†
			* *Dolichocyclopsa*
				+ *Dolichocyclopsamorph*
					- Dolichocyclops
					- Laetuscyclops
				+ *Leptoverma*
					- Leptovermi
					- Plumavermi
		- *Ostopidamorph*
			* Cubiculopsi†
			* *Ostopidea*
				+ Ostopiscis†
				+ *Piscisrostra*
					- **Piscisrostro**†
					- *Eudirostro*
						* *Tyranapsarae*
							+ Tyranapsari†
							+ Novupsari
						* *Dyorostra*
							+ Dyorostro†
 * Acutustoma\*
Caudabranchiis α

***Caudabranchiis α*** was an early species of Caudabranchiis.

## Description

*Caudabranchiis α* was one of the earliest species of Caudabranchiis to emerge on Nusku. Measuring only about 2 centimeters in length, *Caudabranchiis α* had most of the traits indicative of its lineage: a full of set of six primitive eyes (which included early iterations of lenses); two anterior filter-feeding arms; a primitive sense of smell (lining the bulbs where their eyes were); and the beginning of gill structures, formed from the remnants of combs on their fins.

Due to its blood, *Caudabranchiis α* had a bluish coloration.

## Navigation

	+ Manuseptum
	+ *Caudabranchids*
		- *Eutrullamorph*
			* *Trullamorphidae*
				+ *Trullamorpha*
					- Trullamorph†
					- Lepedastom†
				+ Maurotrulla
			* Serrastome
		- *Caudabranchae*
			* *Eucatorumstoma*
				+ Morsdontia†
				+ *Loricatorumstomamorph*
					- *Arthrocollae*
						* Arthrocollis†
						* Laetustoma
					- *Loricatorumstomae*
						* Loricatorumstoma†
						* *Repolimitae*
							+ Repolimita
							+ Arthropulma

* ***Caudabranchiis α***
* *Caudabranchiis β*
* *Caudabranchiis γ*
* *Caudabranchiis δ*
* *Caudabranchiis ε*
* *Caudabranchiis ζ*
Dolichocyclops

**Dolichocyclops** (lit. "long cyclops") is a deep-sea branch of Cyclopslamina

## Description

### Anatomy

The Dolichocyclops are slug-like creatures found exclusively on the deep-sea ocean floor. They feed on softer tissues, having no true structure. Like other relatively primitive Pisceslamina, Dolichocyclops reproduce via broadcast spawning, and their juvenile form filter-feeds with comb-like structures. Dolichocyclops larvae are relatively sessile, floating about the ocean current until they are able to move on their own. They have purple blood (making them the third group of Pisceslamina to evolve blood), and actively respirate using gill-like structures nestled in creases along their back, powering their breathing with their movement. They also possess vibration-sensitive cells on the front of their face to help detect movement in the water, useful for finding mates.

The basal Dolichocyclops lacks a lens on its eye: along with its descendant clade Laetuscyclops, it lives as a deep-sea scavenger, feeding on whatever soft scraps it can find.

### History

Dolichocyclops evolved from basal Cyclopslamina prior to their disappearance. Over the next few million years, they diversified into different niches on the ocean floor.

## Navigation

	+ *Pisceslamimorph*
		- *Pisceslaminae*
			* Pisceslamina
			* *Thalassatestamorph*
				+ *Thalassatestae*
					- Thalassatesta
						* Parvutesta
						* *Archeathalassatesta*
					- Dermatesta
				+ Aspitesta
		- *Archeapodilamina*
			* *Pellislamamorph*
				+ *Pellislaminae*
					- *Pellislaminada*
						* *Patchypoda*
							+ Crassipod
							+ Patchypod
						* Pellislamina
					- Thyreotrichae
				+ Altapod†
			* *Podilamimorph*
				+ *Podilaminae*
					- Podilamina†
					- *Acritestae*
						* Testapod
						* Acritesta
				+ *Cornumorph*
					- Cornugigantas†
					- *Micocornumorph*
						* Cornumini
						* Lapisipenna
	+ *Cyclopslaminae*
		- *Cyclopslamidae*
			* Cyclopslamina†
			* *Dolichocyclopsa*
				+ *Dolichocyclopsamorph*
					- **Dolichocyclops**
					- Laetuscyclops
				+ *Leptoverma*
					- Leptovermi
					- Plumavermi
		- *Ostopidamorph*
			* Cubiculopsi†
			* *Ostopidea*
				+ Ostopiscis†
				+ *Piscisrostra*
					- Piscisrostro†
					- *Eudirostro*
						* *Tyranapsarae*
							+ Tyranapsari†
							+ Novupsari
						* *Dyorostra*
							+ Dyorostro†
 * Acutustoma\*
Morsdontia

**Morsdontia** (lit. "death teeth") was a pelagic clade of Loricatorumstoma during Nusku's first biological era.

## Description

Morsdontia was the first known apex predator of the open ocean, hunting prey such as the Trullamorphs and ancestral Caudabranchiis. Due to the large size and slow speed of their typical quarry, Morsdontia had shorter jaws and serrated teeth, allowing them to rip chunks of flesh off its prey and eat it alive. Their eyes were positioned further away from their snout than basal Loricatorumstoma, which helped reduce the likelihood of damage.

Despite its ferocity as a hunter, Morsdontia itself fell victim to the Proto-Nuskuan Extinction, with all lineages meeting their end within 40 million years of the era's beginning.

## Navigation

	+ Manuseptum
	+ *Caudabranchids*
		- *Eutrullamorph*
			* *Trullamorphidae*
				+ *Trullamorpha*
					- Trullamorph†
					- Lepedastom†
				+ Maurotrulla
			* Serrastome
		- *Caudabranchae*
			* *Eucatorumstoma*
				+ **Morsdontia**†
				+ *Loricatorumstomamorph*
					- *Arthrocollae*
						* Arthrocollis†
						* Laetustoma
					- *Loricatorumstomae*
						* Loricatorumstoma†
						* *Repolimitae*
							+ Repolimita
							+ Arthropulma

* *Caudabranchiis α*
* *Caudabranchiis β*
* *Caudabranchiis γ*
* *Caudabranchiis δ*
* *Caudabranchiis ε*
* *Caudabranchiis ζ*
Brevefyte

**Brevefyte** (lit. "short plant") is a clade of Terrafyllo.

## Description

Brevefytes grow in a wide, flat and mostly short pattern. Their leaves, which can grow as long as five meters across, are massive enough to require the ground beneath to support their weight. For any leaves that turn into female gametangia, they will grow up vertically to maximize an admittedly low seed dispersal.

Due to their flat profile, Brevefytes thrive in stretches of flat land, where high wind speeds would be detrimental to taller Terrafyllo.

## Navigation

	+ *Purpungomorph*
		- Purpungos†
		- *Latafylla*
			* *Latafyllid*
				+ Latafyllo†
				+ *Prototerrafylla*
					- Prototerrafyllo
					- *Euterrafyllo*
						* *Euterrafyllomorph*
							+ *Terrafyllomorph*
								- *Terrafyte*
									* Bulbufyte
									* Terrafyllo
								- Latusfyte
							+ **Brevefyte**
						* Erectufolius
							+ Erectufyte
							+ Hamafolius
			* Simafolium†
	+ *Euvelosfyllo*†
		- Velosfyllo†
		- Acusfyte†
Tidally-Locked Climate Model

The following model is used within Project Rose to describe the hypothetical makeup of climate zones on tidally locked planets.

## Overview

Planets that are tidally locked with their star will have one side locked in perpetual light, and the other in perpetual darkness: this unique setup has multiple implications. First, tidally-locked planets will not have a day-night cycle, nor will they have any seasons: any given region on the planet will have the same climate and levels of light year-round. Second, the atmosphere must be sufficiently thick, or else it will freeze and dissipate on the dark side of the planet.

For the purposes of Project Rose, tidally-locked worlds capable of harboring life are divided into the following six regions.

### Pupil

Receives the greatest amount of direct sunlight, as well as high levels of precipitation. Home to most tropical biomes.

### Iris

Directly surrounding the pupil, this area receives little rainfall or cloud cover, resulting in the most arid climates on the planet.

### Sclera

Houses the equivalent of temperature biomes, receiving a moderate amount of rainfall and warm-to-cool temperatures.

### Sub-Zero Zone

Average temperature hovers around freezing, receiving the equivalent of perpetual sunset. Due to the refraction of light in the planet's atmosphere, this zone will extend past the planet's perpendicular plane. Glacier-melt from this zone will feed into the sclera and form rivers.

### Twilight Zone

The final region to receive any sunlight, experiencing the equivalent of perpetual evening. While frigid and increasingly dark, this zone is capable of harboring multicellular life: its climate and darkness provide a refuge for animals to rest between hunts or raise their young.

### Midnight Zone

The dark side of the planet, cloaked in eternal darkness. The only life in this region will exist in the deep sea, near geothermal vents.
Dermatesta

**Dermatesta** (lit. "skin shell") is a parasitic clade of Thalassatesta.

## Description

Dermatesta are parasitic, barnacle-like Thalassatesta. In their planktonic stage, they are much like other Thalassatesta. When they land on a host, they build their shell into the host's skin, eventually embedding themselves into the body until they reach the bloodstream, which they use as their sole source of nutrition. At this stage, they shed their filters, and the body is encased entirely by the shell, save for the anus.

## Navigation

	+ *Pisceslamimorph*
		- *Pisceslaminae*
			* Pisceslamina
			* *Thalassatestamorph*
				+ *Thalassatestae*
					- Thalassatesta
						* Parvutesta
						* *Archeathalassatesta*
					- **Dermatesta**
				+ Aspitesta
		- *Archeapodilamina*
			* *Pellislamamorph*
				+ *Pellislaminae*
					- *Pellislaminada*
						* *Patchypoda*
							+ Crassipod
							+ Patchypod
						* Pellislamina
					- Thyreotrichae
				+ Altapod†
			* *Podilamimorph*
				+ *Podilaminae*
					- Podilamina†
					- *Acritestae*
						* Testapod
						* Acritesta
				+ *Cornumorph*
					- Cornugigantas†
					- *Micocornumorph*
						* Cornumini
						* Lapisipenna
	+ *Cyclopslaminae*
		- *Cyclopslamidae*
			* Cyclopslamina†
			* *Dolichocyclopsa*
				+ *Dolichocyclopsamorph*
					- Dolichocyclops
					- Laetuscyclops
				+ *Leptoverma*
					- Leptovermi
					- Plumavermi
		- *Ostopidamorph*
			* Cubiculopsi†
			* *Ostopidea*
				+ Ostopiscis†
				+ *Piscisrostra*
					- Piscisrostro†
					- *Eudirostro*
						* *Tyranapsarae*
							+ Tyranapsari†
							+ Novupsari
						* *Dyorostra*
							+ Dyorostro†
 * Acutustoma\*
Deorsumsalm

**Deorsumsalm** (lit. "downward life") are one of two main radiations of Protosalm.

## Description

The name *Deorsumsalm* is a combination of the Latin *deorsum* ("downwards") and the Korean 삶 (*salm;* "life").

### Overview

Deorsumsalm are defined by a downward-facing mouth (as opposed to the upward-mouth facing Sursumsalm).

Compared to their sister clade, Deorsumsalm has been more thoroughly explored, and features a greater degree of anatomical diversity.

## Navigation

	+ Sursumsalm
		- Wiseongcaulos
	+ **Deorsumsalm**
		- *Halayamorph*
			* Halayapileus
			* Platynoche
		- *Polzatmorph*
			* Caudahuzi
			* *Polztimorpha*
				+ Poltzimorph
				+ Sagarumorph