Alien Biospheres follows the hypothetical evolution of a biosphere on the alien planet TIRA 292b. Alien Biospheres focuses on the evolution of life on TIRA 292b, a fictional planet created specifically for …

Metaxypoda (lit. "in-between feet") are a clade of amphibious Sarcopods. Metaxypods are a sister clade of the fully terrestrial Osteopods, first appearing around 4161ma. Having diverged before the …

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The general application of this test for the remote detection of other biospheres will be discussed, as will some implications of this way of viewing biospheres on the nature and organizations of life on Earth. …

Creatures that are terrestrial. Community content is available under CC-BY-SA unless otherwise noted.

Leptopoda (lit. "slender feet") is an order of entirely herbivorous platydonts living in the steppes. Basal Leptopods could reach a high speed to flee predators, like ungulates on Earth. A clade of …

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Elastospondyli (lit. "elastic spine") is a clade of Stenostraca representing the surviving lineage of Coleostraca. Elastospondyli first emerged in response to the emergence of Dromaeopoda: with the …

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Species that possess obligate sapience. This includes (and consists solely of) members of the genera Neotecton and Paleotecton.