The Extinct Species category may include either species which have become entirely extinct, or species that are simply extinct in the wild, due to events such as their planet being destroyed, yet specimens had been in collection off-world at the time. It may also include species that are widely considered to be extinct. Both sapient and non-sapient (or as most science fiction would incorrectly state it, sentient and non-sentient) species may be found here.
All items (754)
K
-
- Kaled
- Kalish
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- Kanabo
- Kanassan
- Karibna
- Kastrian
- Katarthan
-
- Kerchu
- Ketran
-
- Kiba
-
- Killer Folk
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- Kintan Strider
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- Kitling
-
-
- Korbinite
- Kothringi
- Kreegon
- Krell
- Kremmin
- Kryg
- Kryptonian
- Kukulkan's species
- Kumumgah
-
L
M
- M'ndarrel
-
- Magnedon
-
- Mak'Tar
- Makuta
- Mala'kak
-
- Malmooth
-
-
- Man of Iron
- Mangler
-
- Mantyrex (Legends of Izgaldina)
- Maridokuri
- Markab
- Martian (Alienology)
- Martian (All Tomorrows)
- Martian (Altered Carbon)
- Martian (Edison's Conquest of Mars)
- Martian (High Weir)
- Martian (Ice Age)
- Martian (Invader Zim)
-
-
-
- Martian Dwarf
- Martian Glider
- Martian Insect
-
- Massassi
- Maxilonian
- Meatian
- Mega Trogg
- Megamind's Species
- Megarachnid
- Meki
-
-
-
- Melmacian Cockroach
- Melmacian Slug
-
-
-
- Metaluna Mutant
- Metalunan
-
- Metro Man's species
- Millennial Bug
- Minotaur (Doctor Who)
- Mitu
- Mobosaur
- Modular Person
-
- Molator
- Moon Tribe
- Moorwen
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- MorBot
- Morpho
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- Mother (The Moon Era)
- Mothman (Dinosaur Warrior)
- Mua
-
-
- Mutant (Red Faction)
- Mutant Lepidopterran
- Muuh
N
O
P
-
- Pacifoid
- Pan-Dimensional Being
- Panderavis
-
- Parasite (All Tomorrows)
- Pathfinder (Planet Raptor)
-
- Pelimosian
-
-
- Peran
- Pescaton
- Phaedon
- Phantom (Final Fantasy)
- Pickloid
- Pikutabe
- Pit Termite
- Plant Alien
- Plax
-
-
-
-
-
-
- Powamp
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- Precursor (Halo)
- Predator (All Tomorrows)
- Prey (All Tomorrows)
- Priplanian
- Priplanian Turtle
- Prism Beast
- Proamonian
- Proemial God
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- Progenitor (Star Trek)
- Prothean
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-
- Pterosapien