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fossil of a trilobite. lived during time of Early Cambrian throughout the lower Paleozoic, during the Devonian til the end of the Permian See also my other Fossils and Mineral/ Crystal images:
Petrified wood from the Baltic region is not only aesthetically pleasing but also scientifically significant
Ammonite fossil on a dark background. Minimalism.
Untouched nature
Leiden leaf c.s. under microscope
horn snail fossile stone with white background
Erigeron canadensis grows in the wild in summer
Sea Urchin Fossil.  The close-up image shows a  sea urchin fossil from the jurassic period on white background.
Galangal flower and leaves, Yellow-white flowers with leaves, isolated on white background with clipping path
Rain drops falling onto bushes in a South African Game Reserve.
Haircap moss growing in the summer
Sterile stems short to tall, to 80cm, sometimes sprawly green, usually with numerous whorls of relatively thick unbranched branches; ridges 6-19 on stems, 3-4 on branches. Fertile stems whitish or pinkish, unbranched, soon withering.\nCones: ripe April-May, before the sterile stems.\nHabitat: Generally the commonest horsetail, patch-forming and much the most frequent in drier grassy and waste places; sometimes a tiresome weed.\nDistribution: Throughout Europe.\n\nThis is a very common Species in the Netherlands.\nHorsetail, Field Horsetail, Equisetum arvense, Plant, roadside, Green, Europe, Netherlands, leaf, Spring, Season, outdoors, Nature, Nobody, Scenics, Beauty In Nature, Spore, Flower, stem, uncultivated, cone, brown, yellow, vertical, rural, color image, photography, front view\n\nHorsetail, Field Horsetail, Equisetum arvense, Plant, roadside, Green, Europe, Netherlands, leaf, Spring, Season, outdoors, Nature, Nobody, Scenics, Beauty In Nature, Spore, Flower, stem, uncultivated, cone, brown, yellow, vertical, rural, color image, photography, front view
Old fossil snail and white background
Tiger’s eye mineral stone sample macro photography
Wild grass with seeds in autumn park
Ammonite on white background. The ammonites where living between 409 and 65 million years ago (Mya).
Museum piece.
Bugs
`Desert rose, rock rose gypsum crystal cluster on black surface
Asbestos family mineral band in geological rock sample
A closeup of dense Polytrichum plants growing in the field
trilobite fossils on white isolated background.
Pyrite from the Alpstein mountain or Pyrit aus dem Alpstein Massiv (minerals and crystals in the exhibition Mount Säntis - worlds of experiences on the Santis summit) - Switzerland (Schweiz)
A macro image of field  penny cress also know as Thlaspi arvense
Just before the rain come it is the time for squill bloom.
Rheum officinale, Chinese rhubarb, Rheum palmatum L.
Representatives of the Lemnaceae, the duckweed family, are well-adapted for use as bioindicators for testing soil and water for toxic substances.  Their rapid multiplication and the simplicity of their anatomy are important advantages for this use.
Mushroom at Lake O'Hara in 1996. From old film stock.
Macro stone Vivianite mineral on white background close up
Double elrathia Kingi trilobite fossils superimposed.
Free Images: "bestof:Sigillaria stem.jpg fossilized stem of Sigillaria Own 2007-11-29 Wlodzimierz public domain Sigillaria fossils"
Exoneura_species,_f,_australia,_side_2014-11-01-22.14.29_ZS_PMax.jpg
Exoneura_species,_f,_australia,_face_2014-11-01-21.53.56_ZS_PMax.jpg
Exoneura_species,_f,_australia,_back_2014-11-01-21.46.18_ZS_PMax.jpg
Exoneura_species,_f,_australia,_face2_2014-11-01-21.59.50_ZS_PMax.jpg
Red_Rose_in_Sunlight.jpg
Small_White_Flowers.jpg
Water_Droplets_on_Plant.jpg
Closeup_of_Strawberry_on_Stem.jpg
Mushrooms_Growing_on_a_Log.jpg
Leaves_on_Rose_Plant_with_Water_Droplets.jpg
Royal_Purple_Flowers_with_Green_Leaves.jpg
Macro_of_Dried_Flower_with_Green_Leaves.jpg
Macro_of_Yellow_Sunflower.jpg
Purple_Flowers_with_Green_Leaves.jpg
Bowl_of_Fresh_Pears.jpg
photo-1414396914239-e70522479d13.jpg
PUBLIC_DOMAIN_DEDICATION_Pixabay-Pexels_digionbew_16._24-08-16_Grass_in_the_sky_LOW_RES_DSC00569.jpg
Green_Apple_on_Tree.jpg
White orchid blossom on plant stem.jpg
Seed pod on stem of bush.jpg
Seed pods on stem woodvale.jpg
Picea abies stem top close up.jpg
Orange yellow crested orchid platanthera cristata blossoms on stem.jpg
White orchid blossoms spiriling around stem spiranthes cernua.jpg
Threatened species white orchid blossoms on stem among associated plants.jpg
Shot of blue mountain bluebells flowers hanging from a stem mertensia ciliata.jpg
Close view of cluster of purplish pink fringled orchid harbenaria psycodes blossoms on stem.jpg
White orchid blossoms spiriling up stem nodding ladies tresses spiranthes cernua.jpg
Close view of cluster of orange yellow orchid blossoms on stem in ferns.jpg
White orchid blossom on stem of basal leaf light green plant.jpg
Stem with small white orchid blossoms rising from autumn leaves.jpg
Berries(byJassyOnyae).jpg
Putty root stem aplectrum hyemale with yellow and purple orchid blooms.jpg
White prairie clover flower dalea candida stem with the bottom flowering white and the top green.jpg
Tomato (1).jpg
Heliconia.jpg
Dermocybe_canaria.(Canary_Webcap).jpg
Panaeolus_sphinctrinus.jpg
Hypholoma_brunneum..jpg
Panaeolus_sphinctrinus..jpg
Panaeolus_sphinctrinus..jpg
habropoda_excellens,_m,_ut,_face_2014-10-11-20.55.31_ZS_PMax.jpg
bee_small_red_tip,_f,_chile,_side_2014-08-08-17.43.13_ZS_PMax.jpg
bee_small_red_tip,_f,_chile,_face_2014-08-08-17.31.24_ZS_PMax.jpg
habropoda_excellens,_m,_ut,_back_2014-10-11-20.48.35_ZS_PMax.jpg
bee_small_red_tip,_f,_chile,_angle_2014-08-08-17.22.49_ZS_PMax.jpg
Cancer stem cells resized.svg
Cancer stem cells.svg
Cancer stem cells no text.svg
Cancer stem cells text resized.svg
Music 4pb2down.svg
Music 8b2down.svg
Jsdx-droite.svg
Jsdx-gauche.svg
Stem cell division and differentiation.svg
Nothia aphylla fertile stem reconstruction.svg
Tetraxylopteris reposana sterile branches.svg
Cancer stem cells text resized it.svg
Stem cell treatments.svg
Window function and frequency response - Rectangular.svg
Fourier transform – Rectangular.svg
Window function – Rectangular.svg
redon_head_stem.jpg
piranesi_various_bases_stem_columns.jpg
manet_peony_stem_shears_1864.jpg
Sigillaria stem.jpg
Lepidodendron stem.jpg
Cyclostigma hercinium.jpg
Exhibit Museum of Natural History, Ann Arbor - IMG 9205.JPG
Myrica banksiaefolia.jpg
Exhibit Museum of Natural History, Ann Arbor - IMG 9207.JPG
Exhibit Museum of Natural History, Ann Arbor - IMG 9206.JPG
Royena graeca.jpg
Alnus gaudinii.jpg
The_Quarterly_journal_of_the_Geological_Society_of_London_(12645690054).jpg
The_Quarterly_journal_of_the_Geological_Society_of_London_(12512241834).jpg
Sigillaria.JPG
Sigillaria mammillaris - Naturmuseum Freiburg - DSC06753.jpg
Sigillaria1.jpg
Sigillaria2.jpg
Indian bead.png
Rindera umbellata.jpg
Soko Grad.jpg
The_Quarterly_journal_of_the_Geological_Society_of_London_(13365010895).jpg
Plant nodes c.jpg
The_Quarterly_journal_of_the_Geological_Society_of_London_(12893979654).jpg
Stemă_satul_Popeasca.jpg
Ziziphus mucronata09.jpg
Elimia fossils Wyoming.jpg
Headband, sorghum stem - Rwanda - Royal Museum for Central Africa - DSC06562.JPG
Schumann-3m1-sidetheme.png
Mask, Democratic Republic of Congo, Lwena people, c. 1930, wood, bark stem, beads, possibly ivory, hide - De Young Museum - DSC01082.JPG
Stem cup, Korea, Joseon, 15th century, stoneware, mouth covered with silver - Östasiatiska museet, Stockholm - DSC09423.JPG
Stem cup, Korea, Joseon, 15th-16th century AD, brown glazed stoneware - Östasiatiska museet, Stockholm - DSC09422.JPG
Stem_Bowl,_Imari_ware,_Kokutani_gosai-de_type,_Edo_period,_17th_century,_landscape_and_figure_design_in_overglaze_enamel_-_Tokyo_National_Museum_-_DSC05311.JPG
Stem dish from Thailand, 19th century AD, stoneware - found in Hon Dam, Kien Giang province in 1991 - Museum of Vietnamese History - Ho Chi Minh City - DSC05879.JPG
3-way valve bores.PNG
Quantization shaped dither spectrum.png
Sigillaria root.JPG
Sigillaria sp., Carboniferous (Pennsylvanian), Anzin Coal Mines, Anzin, Nord, France - Houston Museum of Natural Science - DSC01744.JPG
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