History Main / SpeculativeBiology

** ''WebOriginal/{{Serina}}'' is a web project that takes place over 250 million years on Serina, a fictional {{terraform}}ed moon where a number of plants, algae, microscopic organisms and invertebrates were introduced, but only 8 vertebrates: 7 tiny fish (guppies, mollies, swordtails and platies) and only one tetrapod: the domestic canary. Over millions of generations, the canaries produce a bizarre array of species, resembling dinosaurs, mammals, reptiles and eventually even resembling insects and fish, while the guppies colonize the land and become analogues of amphibians, reptiles and mammals.

* ''WebOriginal/{{Amphiterra}}'' by Javier Valdez, is an experiment dealing with an alternate timeline where ''frogs'', instead of mammals and reptiles, colonized the earth at the beginning of the Triassic period from the ancestral amphibian, ''Triadobatrachus''. While the early descendants resemble frogs of today, they quickly become a wide array of forms, such as barnacle-like sessile filter-feeders, arctic grazers with an insulating coat of secreted foam, or giant T. Rex-sized apex predators, as well as two sapient species that evolve 65 million years apart from each other.

* WebOriginal/{{Snaiad}} is a project by C.M. Kosemen, author of ''Literature/AllTomorrows'', envisioning "vertebrate" life on an alien planet. All of these creatures have two heads, [[BizarreAlienBiology neither of which contains the brain - that's located in their chests]].

* ''Jurassic Impact'' is alternate history by Reddit user u/[=EpicJM=] that explores the evolution of fauna in a world where the asteroid that killed off the non-avian dinosaurs hit in the Late Jurassic rather than the Late Cretaceous in our timeline.

* ''A World of Dinosauroids'', a speculative evolution project set in an alternate timeline where the K-Pg event did not happen, where a few species of sapient troodontids call the planet home. The societies and fauna of the world is also shown in great detail.

* ''Planet Cat Sanctuary'' is seed world projact by Reddit user u/[=ExoSpectral=] that focuses on cats evolving on a seed world. To feed the cats, rabbits, sparrows and lizards are also introduced into the planet, and they evolve alongside the cats.

* ''WebOriginal/{{Amphiterra}}'' by Javier Valdez, is an experiment dealing with an alternate timeline where ''frogs'', instead of mammals and reptiles, colonized the earth at the beginning of the Triassic period from the ancestral amphibian, ''Triadobatrachus''. While the early descendants resemble frogs of today, they quickly become a wide array of forms, such as barnacle-like sessile filter-feeders, arctic grazers with an insulating coat of secreted foam, or giant T. Rex-sized apex predators, as well as two sapient species that evolve 65 million years apart from each other.

* ''Antarctic Chronicles'' is a project by Reddit user u/RisingMagpie exploring the colonization of Antarctica by flora and fauna, as it warms up and drifts closer to the equator.

* ''Jurassic Impact'' is alternate history by Reddit user u/EpicJM that explores the evolution of fauna in a world where the asteroid that killed off the non-avian dinosaurs hit in the Late Jurassic rather than the Late Cretaceous in our timeline.

* ''Film/KingKong2005'' got a companion book called ''The World of Kong: A Natural History of Skull Island'', where the biology of the various monsters seen in the movie, from the dinosaurs through the giant bugs to Kong himself, got described in a semi-scientific way.

** '''Reconstructed Fiction''': A subtype of Cryptozoology which focuses on reconstructing fictitious animals or monsters from modern media such as ''Franchise/{{Godzilla}}'', ''Franchise/KingKong'', or ''Franchise/{{Pokémon}}'' into more biologically plausible forms.

** '''Reconstructed Fiction''': A subtype of Cryptozoology which focuses on reconstructing fictitious animals or monsters from modern media such as ''Franchise/{{Godzilla}}'', ''Franchise/KingKong'', or ''Franchise/Pokémon'' into more biologically plausible forms.

** '''Reconstructed Fiction''': A subtype of Cryptozoology which focuses on reconstructing fictitious animals or monsters from modern media such as ''Franchise/{{Godzilla}}'' or ''Franchise/KingKong'' into more biologically plausible forms.

[[folder: Western Animation]]

* ''[[WebOriginal/HarDeshur Har Deshur: Visions of an alternate, slightly more habitable Mars]]'' tries to explore what alien life on the surface of Mars might be like, if conditions had remained more stable and if predictions from before Mariner-4 had turned out to be true. While complex, multicellular life does now exist on the surface in this reality, most of it is small and adapted to extreme conditions. Also acts as an hommage to many earlier speculations about life on Mars. Glimpses of the other alternate planets in the solar system are given on occasion.

* ''[[WebOriginal/HarDeshur Har Deshur: Visions of an alternate, slightly more habitable Mars]]'' tries to explore what alien life on the surface of Mars might be like, if conditions had remained more stable and if predictions from before Mariner-4 had turned out to be true. While complex, multicellular life does now exist on the surface in this reality, most of it is small and adapted to extreme conditions. Also acts as a love-letter to many earlier speculations about life on Mars. Glimpses of the other alternate planets in the solar system are given on occasion.

* ''[[WebOriginal/HarDeshur Har Deshur: Visions of an alternate, slightly more habitable Mars]]'' tries to explore what alien life on the surface of Mars might be like, if conditions had remained more stable and if predictions from before Mariner-4 had turned out to be true.

* Literature/GreenAntarctica includes a whole ecosystem evolved from penguins, marsupials, sloths, monkeys, and other Gondwanan animals. However, many of the details are informed by RuleOfScary, and/or are inspired by Creator/HPLovecraft.

* Oceaniz's ''The Nature of'' ''VideoGame/MonsterHunter'' series is ExactlyWhatItSaysOnTheTin: An in-universe documentary series analysing the many ecosystems of the Monster Hunter universe and the monsters that live within them, up to and including Elder Dragons. There are two seasons as of writing: one focusing on the [[https://youtube.com/playlist?list=PLSTnzl-WzvZ802N5jzc4goMg77Pxb87_A New World]], and one focusing on [[https://youtube.com/playlist?list=PLSTnzl-WzvZ8fk2Q7PpRleyUyj_n8c16N Kamura]]. There are also several [[https://youtube.com/playlist?list=PLSTnzl-WzvZ--_T9jkEeu2PyKYrvcwQlG specials]] that take an in-depth look at other miscellaneous topics like monster sub-species and variants.

* Oceaniz's ''The Nature of'' ''[[VideoGame/MonsterHunter]]'' series is ExactlyWhatItSaysOnTheTin: An in-universe documentary series analysing the many ecosystems of the Monster Hunter universe and the monsters that live within them, up to and including Elder Dragons. There are two seasons as of writing: one focusing on the [[https://youtube.com/playlist?list=PLSTnzl-WzvZ802N5jzc4goMg77Pxb87_A New World]], and one focusing on [[https://youtube.com/playlist?list=PLSTnzl-WzvZ8fk2Q7PpRleyUyj_n8c16N Kamura]]. There are also several [[https://youtube.com/playlist?list=PLSTnzl-WzvZ--_T9jkEeu2PyKYrvcwQlG specials]] that take an in-depth look at other miscellaneous topics like monster sub-species and variants.

* '''[[OurCryptidsAreMoreMysterious Cryptozoology]]:''' Some speculative works try to re-design mythical creatures from fantasy and folklore [[DoingInTheWizard to be more "realistic" and biologically plausible]]. Mer-people and dragons are among the two most popular candidates, exploring the development of sapient aquatic humanoids or the evolution of large flying reptiles, though other monster reconstructions such as [[BigfootSasquatchAndYeti Bigfoot]][[note]]for plausible reconstructions of large, bipedal apes[[/note]], [[OurAngelsAreDifferent Angels]] and [[OurDemonsAreDifferent Demons]] [[note]]Where do angels fall in the ecosystem and [[FallenAngel how did demons evolved from]], [[AscendedDemon or sometimes, into]] them?[[/note]], {{Unicorn}}s [[note]]A popular spec biology subject involving equines with a front facing horn on the top of their face.[[/note]], [[OurGiantsAreBigger Giants]][[note]]discussing what HumanSubspecies would've evolved to adapt to gigantism.[[/note]], [[OurVampiresAreDifferent Vampires]][[note]]Another HumanSubspecies or batlike creatures that adapted for a liquivorous diet and nocturnality as well as flight.[[/note]], and [[OurFairiesAreDifferent Fairies]]/[[OurPixiesAreDifferent Pixies]] [[note]] What bugs or would've looked like if they had convergently evolved to look similar in appearance and intelligence as humans.[[/note]] are not unheard of in this subgenre.

* '''[[OurCryptidsAreMoreMysterious Cryptozoology]]:''' Some speculative works try to re-design mythical creatures from fantasy and folklore [[DoingInTheWizard to be more "realistic" and biologically plausible]]. Mer-people and dragons are among the two most popular candidates, exploring the development of sapient aquatic humanoids or the evolution of large flying reptiles, though other monster reconstructions such as [[BigfootSasquatchAndYeti Bigfoot]][[note]]for plausible reconstructions of large, bipedal apes[[/note]], [[OurAngelsAreDifferent Angels]] and [[OurDemonsAreDifferent Demons]] [[note]]Where do angels fall in the ecosystem and [[FallenAngel how did demons evolved from]], [[AscendedDemon or sometimes, into]] them?[[/note]], {{Unicorn}}s [[note]]A popular spec biology subject involving equines with a front facing horn on the top of their face.[[/note]], [[OurGiantsAreBigger Giants]][[note]]discussing what HumanSubspecies would've evolved to adapt to gigantism.[[/note]], [[OurVampiresAreDifferent Vampires]][[note]]Another HumanSupecies or batlike creatures that adapted for a liquivorous diet and nocturnality as well as flight.[[/note]], and [[OurFairiesAreDifferent Fairies]]/[[OurPixiesAreDifferent Pixies]] [[note]] What bugs or would've looked like if they had convergently evolved to look similar in appearance and intelligence as humans.[[/note]] are not unheard of in this subgenre.

* '''[[OurCryptidsAreMoreMysterious Cryptozoology]]:''' Some speculative works try to re-design mythical creatures from fantasy and folklore [[DoingInTheWizard to be more "realistic" and biologically plausible]]. Mer-people and dragons are among the two most popular candidates, exploring the development of sapient aquatic humanoids or the evolution of large flying reptiles, though other monsters reconstructions such as [[BigfootSasquatchAndYeti Bigfoot]], {{Unicorn}}s, [[OurGiantsAreBigger Giants]], [[OurVampiresAreDifferent Vampires]], and [[OurPixiesAreDifferent pixies]] are not unheard of in this subgenre.

** ''WebOriginal/HamstersParadise'': Concerns a seeded world, where the colonist animal of choice is the Chinese dwarf hamster, introduced to a planet with BinarySuns and a habitable biosphere by human colonists who then abandon the planet and leave them to evolve for 500 million years. The project is ReferenceOverdosed, featuring creatures such as hopping kangaroo and wallaby-analogues called the [[Music/OingoBoingo boingo and the oingo]], a saber-toothed big-cat-like predator called the [[WesternAnimation/IceAge jeggo]], a diverse clade of flying rodents called [[WesternAnimation/CloudyWithAChanceOfMeatballs ratbirds]], two reptile-analogue "ratptiles" at different geological ages called the [[Franchise/{{Pokemon}} fastoise and the baryzard]], and a sapient race of UncannyValley [[MockyMouse humanoid ape-like rodents]] called the [[Franchise/MickeyMouse mousey micks]].