(click on thumbnails to enlarge pictures)

USA - Missouri, Pettis County, Psaronius sp.,
upper part of stem with scars of fallen leaves typical for Caulopteris sp., Carboniferous, height 20 cm,
cross section 15 cm
USA - Illinois, Vermilion County, Psaronius sp., advetitious roots, Carboniferous, 6,5 cm
USA - Illinois, Mazon Creek, Lepidodendron sp., anatomic details in cross section and leaf cushions on a surface of the stem, Carboniferous, cross section 8,6 cm, length 10 cm
USA - Nevada, Virgin Valley, Conk Wood Opal, Miocene, 7 cm
USA - Texas, Yegua Formation, San Antonio, Mennegoxylon jonesii, Eocene, cross section, 13 cm USA - Illinois, Peoria County, Psaronius sp. with scars of fallen leaves typical for Caulopteris sp., Carboniferous,
lenght 13,5 cm, cross section 13 cm
USA - Texas, Dockum Formation, Canadian River, Amarillo, Equisetites sp., Triassic, cross section, 4 cm USA - Washington, Columbia Group Basalts, Saddle Mountain, Taxodioxylon sp.,
Miocene, 15,5 cm
USA - Texas, Karnes City,
Eocene, 9 cm
USA - Utah, Henry Mountains, Garfield County, Ticaboo, coniferous, Jurassic, 7 cm USA - Utah, Henry Mountains, Garfield County, Ticaboo, coniferous, Jurassic, 7 cm USA - Utah, Henry Mountains, Garfield County, Ticaboo, coniferous, Jurassic, 7 cm
USA - Utah, Henry Mountains, Garfield County, North Wash, coniferous, Jurassic, 8 cm USA - Texas, Karnes City, Palmoxylon sp., Eocene,
9,5 cm
USA - Southern Texas, Catahoula Formation, Cyathodendron texanum, Eocene/Oligocene, 4 cm
USA - California, Gem Hill Formation, Kern County, Boron, deciduous, Miocene, 3,5 cm USA - Washington,
Platanoxylon sp.,
Miocene, 5 cm
USA - Washington,
coniferous, Miocene,
4,5 cm
USA - Washington,
coniferous, Miocene,
3 cm
USA - California, Ricardo Formation, Last Chance Canyon, El Paso Mountains, Ficoxylon sp., Pliocene,
7 cm
USA - California, Ricardo Formation, Last Chance Canyon, El Paso Mountains, Ficoxylon sp., Pliocene,
9 cm
USA - Nevada, Virgin Valley, opalized coniferous wood, Miocene, 2,5 cm USA - Louisiana,
Palmoxylon sp.,
Oligocene, 21 cm
USA - Nevada, opalized deciduous wood,
Miocene, 16 cm

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