Francois Savigny / Old African elephant bull in 'must', period of sexual dominance when he wil mate with females in his home range, Etosha National Park, S. Africa
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John Cancalosi / Cross-Section of Utah Septarian Nodule, Utah. A type of geode, Utah Septarian Nodules are found about 15 miles east of Zion National park. They were formed in an ancient sea floor during the Cretaceou...
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Theo Bosboom / Beech trees (Fagus sp) after a heavy snowstorm, Rozendaalse bos, the Netherlands, November
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Theo Bosboom / Winter landscape with fog and snow, Deelerwoud (Veluwe), the Netherlands, December 2008
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SINCLAIR STAMMERS / Well preserved fossil of trilobite Dudley locust (Calymene blumenbachii) from the Silurian period, found in the Wenlock Limestone of Wrens Nest Hill, Dudley, Worcestershire.
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Juan Carlos Munoz / Fossil of extinct perch fish (Priscacara sp) from the Eocene period, Wyoming, USA
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John Cancalosi / Fossil Fly (species unknown) from the Early Cretaceous Period. Santana Formation, Brazil
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John Cancalosi / Fossil Dragonfly (Cordulagomphus fenestratus) from the Lower Cretaceous Period, 125 million years old. Araripe basin, Brazil
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John Cancalosi / Fossil Keichousaurus (Keichousaurus hui, family Pachypluerosauridae), a lizard-like marine reptile from the Triassic Period. China
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Juan Manuel Borrero / Ruins of ancient Revash buildings / burial sites, from the period of Chachapoyas culture, Amazonas Department, Peru, October 2009
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Solvin Zankl / The arrival of many Olive ridley sea turtles (Lepidochelys olivacea) at the beach of Ostional, Costa Rica, Pacific coast, at the beginning of an arribada (mass nesting event) November ^^^ Thousands an...
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Solvin Zankl / After an incubation period of 45 to 55 days and several days long ascent through the sand the hatchling Olive ridley turtles (Lepidochelys olivacea) emerge all together. Ostional Beach, Costa Rica, No...
