microfossil
noun
mi·cro·fos·sil
ˌmī-krō-ˈfä-səl 
: a small fossil that typically can be studied only microscopically and that may be either a fragment of a larger organism or an entire minute organism
Examples of microfossil in a Sentence
Recent Examples on the Web
Since landing on Mars, Perseverance has crossed Jezero Crater and explored an ancient river delta in search of microfossils of past life.
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Ashley Strickland, CNN Money, 10 Sep. 2025
Scientists have been able to use those pollen records to reconstruct how far the shoreline moved inland by tracking the proportion of pollen grains in the geologic record to the rise of marine microfossils.
—Francisca Oboh Ikuenobe, The Conversation, 20 May 2025
The rover is on a quest to determine if life ever existed on Mars by collecting samples that could contain ancient microfossils.
—Ashley Strickland, CNN, 12 Dec. 2024
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Ashley Strickland, CNN Money, 10 Sep. 2025
Scientists have been able to use those pollen records to reconstruct how far the shoreline moved inland by tracking the proportion of pollen grains in the geologic record to the rise of marine microfossils.
—Francisca Oboh Ikuenobe, The Conversation, 20 May 2025
The rover is on a quest to determine if life ever existed on Mars by collecting samples that could contain ancient microfossils.
—Ashley Strickland, CNN, 12 Dec. 2024
See All Example Sentences for microfossil
Cite this Entry
“Microfossil.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/microfossil. Accessed 31 Oct. 2025.
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