Living fossils

For each fossil, try to identify the living animal which closely resembles it
Living fossil usually does not mean an animal is completely unchanged from a prehistoric form to today. Rather it usually means that it is the last survivor of an ancient family, or has some "ancient" features that make it similar to an extinct animal
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Kearsarge
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Last updated: September 28, 2025
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First submittedJune 27, 2024
Times taken34
Average score23.1%
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3 Comments
+2
Level 68
Jun 27, 2024
Geckos are dubiously "living fossils" given that they are not a particularly archaic group of lizards, but had to include it given how well preserved that particular amber specimen is. It is really clear that that is a gecko just by looking at it.

Cheated a bit with platypuses. The skull shown here is a skull of a miocene platypus. Platypuses are not living fossils because they look like platypuses from the miocene, a time by which most animal groupings should look relatively familiar, but they are definitely living fossils because of their egg laying habits, unusual in mammals.

Missing lots of animals/plants here, had to leave a bunch off due to an inability to find pictures of fossils for the animals. Eg. Aardvarks are pretty archaic, and are the sole survivor of their family, but had no luck in finding a picture of a relatively intact fossil. Tried to avoid anything where the surviving material was just teeth or bone fragments.

+1
Level 54
Sep 28, 2025
Crinoid and ginkgo spelt wrong. Platypus and gecko are dubious additions. Pretty poor image example for a nautilus too, using a heteromorphic is wack.
+1
Level 68
Sep 28, 2025
Agree on platypus and geckos being dubious, mentioned that already in that comment. If I ever come back to this quiz as more than a 5 minute project I would probably not include them.

Had to confirm, but pretty sure the nautiloid fossil is not a heteromorph ammonite. The fossil is Gyronaedyceras, a devonian nautiloid, so much closer related to living nautiloids than ammonites were, and much more archaic to boot. I could have used something that looks more similar to a living nautiloid, but at least I got the subclass right.