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*Hyphen tallshroom*. A mysterious, chitinous life form with no clear terrestrial analog.
1. Hyphen
Hyphens are colonies of hard-shelled hecaspids: shell-making algae. (Algae on this world descended from a star-like 'solarian' cell, while all animal life descended from an elongated 'polarian' cell.) Hecaspids in the colony align their shells into a column, forming tough armored threads, or hyphae. On Earth hyphae are characteristic of fungi, but it is not clear if an analogous group exists on this world.
2. Tallshroom
The tallshroom is a complex organism with differentiated organs, but all its structures are fundamentally threadlike — hyphenated — and constructed of tough biopolymer akin to chitin. Gill-like structures along the flanks collect oxygen and chemistry from the water, fruiting bodies disperse reproductive cells, and the central body forms a sealed 'wellhead'.
3. Armored driller
Tallshrooms drill their hyphae into the rock below, cracking open their own hydrothermal vents. The body captures the outflow of this vent, where bacteria convert minerals into energy. If the outflow becomes too hot or rapid, the tallshroom's drumlike top blows open, releasing the catastrophic overflow.
4. Viral history
Like the mammalian placenta, the tallshroom's hyphae evolved in an explosion of retroviral inserts. These viral proteins are expressed in the tips of the drill fibers. Hyphae may have originally evolved as viral predators—inserting a symbiotic virus into armored life forms by growing on and cracking through their bodies.
5. Cousins
Despite millions of years of evolutionary separation, the tallshroom shares elements of its body plan with the false fission drum *Polymephycite tympanum*, a fellow member of clade Scyllidae. It is unknown whether this represents convergent evolution, mimicry, or a viral gene transfer.
Assessment: indicator of new evolutionary pathways unique to this world.
Unknown
Organic
Databank Entry for Tallshroom
*Hyphen tallshroom*. A mysterious, chitinous life form with no clear terrestrial analog.
1. Hyphen
Hyphens are colonies of hard-shelled hecaspids: shell-making algae. (Algae on this world descended from a star-like 'solarian' cell, while all animal life descended from an elongated 'polarian' cell.) Hecaspids in the colony align their shells into a column, forming tough armored threads, or hyphae. On Earth hyphae are characteristic of fungi, but it is not clear if an analogous group exists on this world.
2. Tallshroom
The tallshroom is a complex organism with differentiated organs, but all its structures are fundamentally threadlike — hyphenated — and constructed of tough biopolymer akin to chitin. Gill-like structures along the flanks collect oxygen and chemistry from the water, fruiting bodies disperse reproductive cells, and the central body forms a sealed 'wellhead'.
3. Armored driller
Tallshrooms drill their hyphae into the rock below, cracking open their own hydrothermal vents. The body captures the outflow of this vent, where bacteria convert minerals into energy. If the outflow becomes too hot or rapid, the tallshroom's drumlike top blows open, releasing the catastrophic overflow.
4. Viral history
Like the mammalian placenta, the tallshroom's hyphae evolved in an explosion of retroviral inserts. These viral proteins are expressed in the tips of the drill fibers. Hyphae may have originally evolved as viral predators—inserting a symbiotic virus into armored life forms by growing on and cracking through their bodies.
5. Cousins
Despite millions of years of evolutionary separation, the tallshroom shares elements of its body plan with the false fission drum *Polymephycite tympanum*, a fellow member of clade Scyllidae. It is unknown whether this represents convergent evolution, mimicry, or a viral gene transfer.
Assessment: indicator of new evolutionary pathways unique to this world.
