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Added an introduction section as an overview of major groups for newcomers
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miraheze:sagan4beta>TSSL (Added an introduction section as an overview of major groups for newcomers) |
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'''Introduction'''
Sagan 4 is a planet with conditions similar to Earth. All of its life derives from a single cell, [[Protosagania]]. Its major kingdoms are [[Binucleida]], an incredibly diverse group in which each cell has two or more nuclei, ranging from microbes to the tallest trees, [[Carpozoa]], which tend to be fairly animal-like but include some single-celled and colonial species, and [[Photosagnia]], purple photosynthesizers that include clouds of microbes in the oceans and some of the first flora on land.
The two biggest lineages of Binucleida originated from symbiosis between one organism that produced a chitinous outer shell and another that provided a soft inner core. One of these lines is crystal flora, in which the outer shell is usually photosynthetic and crystal-shaped; these dominate many of Sagan 4's photosynthetic niches.
The other line of Binucleida is the binucleid worms, in which the outer shell forms a segmented exoskeleton. The biggest group of binucleid worms is the knightworms (descendants of the common knightworm), mostly found around the western continent, Glicker, which often resemble Earth's arthropods. They range from tiny crawlers to large creatures with legs, and they include two of the first fauna on land. The next-biggest binucleid worm group is heliovermis (descendants of wormstem), which are able to photosynthesize. They tend to have an animal-like juvenile phase and a plant-like adult phase. Heliovermes are mostly found on and around the eastern continent, Wright.
Carpozoa's biggest lineages are [[Luceremundaria]], which often have colorful bioluminescence and range from fish-like to cup-shaped, and [[Asterzoa]], a diverse group whose original body plan was shaped like a four-armed star.
The biggest Luceremundarian group is [[Geletaventria]], superficially similar to fish, but with a four-tentacled mouth. Some Geletaventrians are soft-bodied, while others have armor. Luceremundaria also includes [[Carpolantaia]], which are generally cup-shaped and gelatinous, mostly floating, though some are sessile or crawl.
Asterzoa is split into [[Asterzalia]], many of which have become bilateral swimmers and crawlers, including species with skeletons and formidable jaws, [[Asterstreidia]], radial species, mostly filter-feeders and mostly sessile, many of them shelled, and [[Asterfolia]], which have developed photosynthesis through symbiosis, some of which have become more plant-like and some with more active lifestyles.
There are several additional smaller kingdoms. One is [[Mancerxia]], which currently mostly consists of virus-like microbes. Another, [[Goliathpseudopodia]], consists of large single-celled organisms, some of which are over a centimeter in size. [[Lituswushia]], [[Skarlixia]], and [[Ferrumcarceria]] all metabolize various metals in different ways. The [[Taxonomy]] pages contains a full list of Sagan 4's kingdoms.
'''Fun facts:'''
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