Triasacarus fedelei

extinct mite species

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Last updated

July 21, 2026

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Triasacarus fedelei is an extinct species of mite dating back approximately 230 million years to the Triassic Period. This ancient arthropod is among the oldest mite fossils preserved in amber. Scientists believe Triasacarus fedelei fed on extinct species of conifers, and its remains were preserved when the tree's resin encased it. Mites, in general, are tiny arthropods belonging to the subclass Acari and inhabit a vast array of environments.1

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2 Britannica Sources

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…two extinct mite species (Triasacarus fedelei and Ampezzoa triassica) dated to approximately 230 million years ago (during the Triassic Period) are among the oldest arthropod fossils preserved in amber. The mites are thought to have fed on extinct species of conifers, ultimately becoming encased and preserved in the trees’…
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…two extinct mite species (Triasacarus fedelei and Ampezzoa triassica) dated to approximately 230 million years ago (during the Triassic Period) are among the oldest arthropod fossils preserved in amber. The mites are thought to have fed on extinct species of conifers, ultimately becoming encased and preserved in the trees’…
Read More