butchndad Posted September 6, 2020 Share Posted September 6, 2020 Good morning. Is there an accepted demarcation of what constitutes a micro? Is it 1/4 inch or smaller? These two Crows are 5/16 inches. The other photo is, I think, just a cusp which is 1/8 inch. Thanks all. Link to comment Share on other sites More sharing options...
Fossildude19 Posted September 6, 2020 Share Posted September 6, 2020 Technically, I believe this is the answer: From MeriamWebster.com/dictionary: Personally, I would call anything smaller than 5 mm a "microfossil". 2 Tim - VETERAN SHALE SPLITTER VFOTM --- APRIL - 2015 __________________________________________________ "In every walk with nature one receives far more than he seeks." John Muir ~ ~ ~ ~ ><))))( *> About Me Link to comment Share on other sites More sharing options...
grandpa Posted September 6, 2020 Share Posted September 6, 2020 Here's a quantification of microfossil from: https://en.wikipedia.org/wiki/Micropaleontology " Microfossils are fossils that are generally between 0.001mm and 1 mm in size,[1] the study of which requires the use of light or electron microscopy. Fossils which can be studied with the naked eye or low-powered magnification, such as a hand lens, are referred to as macrofossils. " 2 Link to comment Share on other sites More sharing options...
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