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Mamba. Black mamba snake in a tree in South Africa. The best known Mamba is the black mamba, D. polylepis (Dendroaspis polylepis). Among deadliest of the world's snakes.
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American bison (Bison bison) also known as buffalo or plains buffalo on the prairie, western U.S.
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Leonardo da Vinci (1452-1519), Italian Renaissance painter from Florence. Engraving by Cosomo Colombini (d. 1812) after a Leonardo self portrait. Ca. 1500.
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Title: Senate Square, St. Petersburg, December 14, 1825: repression of the troop mutiny - watercolor by Carl Ivanovitch Kollman, 1825 depicts Decembrist uprising clashing with cavalry, with spectators watching. (new style December 26, 1825) Europe. Saint
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nectridean

fossil amphibian

Learn about this topic in these articles:

annotated classification

  • banded fire salamander (Salamandra terrestris)
    In amphibian: Annotated classification

    †Order Nectridea (nectrideans)Lower Pennsylvanian to Middle Permian. Lepospondylous vertebrae; elongate body with reduced well-differentiated limbs; fan-shaped neural and haemal spines on caudal vertebrae.†Order Microsauria (microsaurs)Lower Pennsylvanian to Middle Permian. Lepospondylous vertebrae,

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