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from article Paleobotany
Section showing rings from a tree with uniform cell size and wall thickness, but growing at approximately 82° South during the Triassic.
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from article Osteolepiformes
Schematic phylogeny (family tree) of the osteolepiforms, based on arguments presented by P. Ahlberg and Z. Johanson (1998). The fishes within the gray zone are conventionally designated as Osteolepiformes (the formal group name), but they actually…
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from article Osteolepiformes
The tristichopterid Eusthenopteron foordi. (a) A close-up of its pectoral fin skeleton. (b) An illustration of the full specimen. Eusthenopteron reached approximately 50–70 cm in length. Its pectoral fin skeleton contains structures equivalent to…
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from article Parenchyma
Schematic representation of a group of cells from parenchyma of Asparagus root, illustrating regular arrangement of cells in a compact tissue.
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from article Parenchyma
Transverse section of a leaf of Tolmiea menziesii, showing mesophyll or chlorenchyma with prominent intercellular spaces. (Photograph by R. B. Wylie)
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from article Parenchyma
Section of Olearia rami leaf cut parallel to surface, showing mesophyll or chlorenchyma with prominent intercellular spaces. (Photograph by R. B. Wylie)
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from article Mercury (element)
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from article Mercury (element)
Mercury droplets exhibiting non-wetting of the surface. (Credit: A. Cerar/Getty Images)
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from article Mercury (element)
Tooth with a silver-amalgam filling. (Credit: Szasz-Fabian Jozsef/Shutterstock.com)
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from article Bluegrass
Kentucky bluegrass (Poa pratensis). (Photo courtesy of Forest and Kim Starr)
