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Beetles pollinated orchids millions of year ago, fossil evidence shows When most people hear the word âpollinator,â they think of bees and butterflies. However, certain beetles are known to pollinate plants as well, and new fossil evidence indicates that they were doing so 20 million years ago. This is a fossil ptilodactyline beetle found in amber from Mexico. The black arrow points to pollinia attached to the beetle's mouthparts. CREDIT Entomological Society of America
1 Most leaf fossils from tbe coal fields are fossil fern leaves. 2  Fern leaf fossils generally have a central ridge or elongate furrow, with tin lines or veins arching away from the ridge, similar to modern fern leaves. 3  They are often black (from organic carbon like coal) and occur in dark gray shales.ere are some possibilities. 1  The most commonly misidentified fossils with flower shapes are types of plant fossils called sphenopsids. 2  Flower shapes in limestone, are most often 5-sided and are fossils of echinoderms.