| Speculative biology is simultaneously a science and form of art in which one speculates on the possibilities of life and evolution. What could the world look like if dinosaurs had never gone extinct? What could alien lifeforms look like? What kinds of plants and animals might exist in the far future? These questions and more are tackled by speculative biologists, and the Speculative Evolution welcomes all relevant ideas, inquiries, and world-building projects alike. With a member base comprising users from across the world, our community is the largest and longest-running place of gathering for speculative biologists on the web. While unregistered users are able to browse the forum on a basic level, registering an account provides additional forum access not visible to guests as well as the ability to join in discussions and contribute yourself! Registration is free and instantaneous. Join our community today! |
| Questions that don't need their own topics vol.2; New and fresh | |
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| Topic Started: Jan 4 2018, 11:18 AM (26,843 Views) | |
| HangingThief | Jul 3 2018, 03:46 PM Post #811 |
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ghoulish
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Aragonite is a form of calcium carbonate, and it is produced biologically by organisms such as stony corals, mollusks and tubeworms. I assume that its structure is better for building external shells than an endoskeleton, as that's how organisms always use it. |
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Hey. | |
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| IIGSY | Jul 3 2018, 07:03 PM Post #812 |
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A huntsman spider that wastes time on the internet because it has nothing better to do
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How would an insect go about vascularization? |
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Projects Punga: A terraformed world with no vertebrates Last one crawling: The last arthropod ARTH-6810: A world without vertebrates (It's ded, but you can still read I guess) Potential ideas- Swamp world: A world covered in lakes, with the largest being caspian sized. Nematozoic: After a mass extinction of ultimate proportions, a single species of nematode is the only surviving animal. Tri-devonian: A devonian like ecosystem with holocene species on three different continents. Quotes Phylogeny of the arthropods and some related groups In honor of the greatest clade of all time More pictures Other cool things All African countries can fit into Brazil
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| Mynameisnotdave23 | Jul 4 2018, 12:10 AM Post #813 |
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Idiot Extraordinaire
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Would a terrestrial planet with 2-3 moons be too unstable to support (large) multicellular life? |
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Projects Avisia, an island archipelago isolated for over 88 million years, and is know home to megafaunal birds, mekosuchine crocodiles, and many relics. (currently in infancy) Read here: http://s1.zetaboards.com/Conceptual_Evolution/topic/8192410/2/#new Deviantart: https://mynameisnotdave23.deviantart.com/ | |
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| Rodlox | Jul 4 2018, 01:43 PM Post #814 |
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Superhuman
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short answer: nope. longer answer: depends on what size and distance the moons are...probably not. |
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.---------------------------------------------. Parts of the Cluster Worlds: "Marsupialless Australia" (what-if) & "Out on a Branch" (future evolution) & "The Earth under a still sun" (WIP) | |
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| Cool_Hippo43 | Jul 4 2018, 03:05 PM Post #815 |
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Hippo
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I think not, depending on the orbits and the size of the moons ... if it's 2-3 moons with the mass and size of our moon it would end up in a mess. now if it's 3 little moons I think that would be no problem. Mars has 2 moons but both are no more than 12 km (deimos has 6km). now though I think these tiny moons are not as relevant, so I think 3 things the size of charon would be stable (606 km) |
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| Rebirth | Jul 4 2018, 08:14 PM Post #816 |
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Adolescent
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Would it be possible for a non-mammalian synapsid, such as a gorgonopsid or pelycosaur, to get rabies? |
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My Projects Spoiler: click to toggle
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| Russwallac | Jul 4 2018, 10:15 PM Post #817 |
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"Ta-da!"
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If I had to guess, probably not. In addition to the biological differences between them and mammals, rabies needs its host to have a high enough body temperature to propagate. Opossums, for example, are resistant, since their body temperature is very low for a mammal. It's possible that nonmammalian synapsids, especially the more basal ones, would've presented the same issue. |
"We've started a cult about a guy's liver, of course we're going to demand that you give us an incredibly scientific zombie apocalypse." -Nanotyranus
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| Setaceous Cetacean | Jul 5 2018, 11:25 PM Post #818 |
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Insert Funny Creative Title Here
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Could blue photosynthesizers feasibly exist on alien worlds, and would there need to be a specific star type or planetary conditions that could allow for this? |
If you like balloons, the color red, or mixotrophic plants derived from photosynthetic vertebrate-analogues, then check out my xenobiology project Solais
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| Sceynyos-yos | Jul 6 2018, 03:44 AM Post #819 |
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dheubewes wedor
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Blue photosynthesizers, depending on their exact absorbance spectrum, would absorb more energy than green plants here on Earth. The question is if there would be excess energy and if yes, how would they deal with it. |
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| Setaceous Cetacean | Jul 6 2018, 07:04 AM Post #820 |
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That’s interesting, because I always thought blue was among one of the most high-energy wavelengths of light and that not absorbing it would significantly decrease the overall energy intake of plants. |
If you like balloons, the color red, or mixotrophic plants derived from photosynthetic vertebrate-analogues, then check out my xenobiology project Solais
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| Sceynyos-yos | Jul 6 2018, 09:22 AM Post #821 |
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dheubewes wedor
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It is the most high energy type of visible light, but the sun emits most light in the green spectrum, which green plants reflect and blue plants would absorb and make use of. Of course, depending on exact color and biochemistry, it is conceivable that a bluish plant would absorb less energy on Earth than your average green plant. |
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| Rodlox | Jul 6 2018, 02:17 PM Post #822 |
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Superhuman
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yes, they can exist - they exist on Earth...some plants have pigments that lets them feast on the bluer ends of the spectrum. (and if there is extra energy, then either use fuzz to reflect the excess away, or direct it into...(?)) |
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.---------------------------------------------. Parts of the Cluster Worlds: "Marsupialless Australia" (what-if) & "Out on a Branch" (future evolution) & "The Earth under a still sun" (WIP) | |
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| Sceynyos-yos | Jul 6 2018, 02:57 PM Post #823 |
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dheubewes wedor
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How do new muscles evolve? Do they gradually split into two, or do they arise from some tissue? |
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| Rodlox | Jul 6 2018, 06:06 PM Post #824 |
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Superhuman
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doubling, I'd imagine |
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.---------------------------------------------. Parts of the Cluster Worlds: "Marsupialless Australia" (what-if) & "Out on a Branch" (future evolution) & "The Earth under a still sun" (WIP) | |
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| Setaceous Cetacean | Jul 7 2018, 07:32 PM Post #825 |
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Would an Earth-like planet need to have any special characteristics to possess relatively shallow oceans, similar to the productive ecosystems of the continental shelf? In other words, could a world feasibly possess extremely prevalent and expansive continental shelves? What effects on oceanic (and terrestrial) ecosystems would this have? I am aware that this was addressed somewhat in the Serina thread; I’m simply curious as to how this could be implemented in a xenobiology setting, and I would like some more information on this topic. Those are all my questions. Any answers would be greatly appreciated. |
If you like balloons, the color red, or mixotrophic plants derived from photosynthetic vertebrate-analogues, then check out my xenobiology project Solais
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7:46 PM Jul 10