There's many species throughout Sagan 4 history which died out, but had they not, they could have produced interesting new forms unlike anything around today. Alternatively, the evolution of some lineages might have taken completely different turns, which may have had an impact on the form they take today. Here, the subject of such may be discussed.

I created this thread because of a peculiar extinct bearhog that caught my eye, but anyone can post similar stuff here.

While I was making every single bearhog in Spore, I stumbled upon a very peculiar species--the wading gringlo.

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Of course, this is a fairly obvious homage to the reedstilt from After Man. But the characteristics it has from Hydro's attempt to make it live and behave similarly to the reedstilt has considerable implications for what its descendants may have looked like if it had survived.

Like all gringlos, the wading gringlo was an endotherm. Had a descendant moved inland and perhaps shrunken, the hairs covering its legs might have mutated to cover its entire body, creating an effective insulating coat. With this hypothetical descendant surviving in the wake of the ice comet impact event, it may have proceeded to diversify, forming a new major group of fuzzy endotherms resembling twin-tailed mammals with dinosaur-like heads and necks.

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I like the colorful artwork and the pose.
If Fermi sinks beneath the sea next Week, or if it has a huge mass extinction, then I suppose I could add some of my many old Fermi thornback and flora sketches here, too. They would be near-contemporary alternate-timeline ideas.

I think that might fall more under normal scrapped organisms. This thread is intended more for like, you find a cool species and have an idea for descendants but alas, it is long extinct.

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If someone saved the Krakow Krillpede before the ice age there would be some really cursed descendants.
Not even sure how this thing could swim in the first place.

I've updated the title and first post to make this more general and to set it apart more from just fanart.

I do like to think on occasion about what might have happened if the falsequill sauceback diversified more than it did. The powerful tail strike could be modified to allow it to launch its entire body from the soil to take down large prey, which might have then paved the way for it to become a tripod.

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Could've become like the regular reptile to lie between the murkworms' turtle and the feathered saucebacks' dinosaur. I've mostly imagined forms comparable to monitor lizards, but it's fun thinking about potential "iguana" and "gecko" saucebacks too.