http://etc.usf.edu/clipart/ Free clipart for students & teachers! Welcome to quality educational clipart. Every item comes with a choice of image size and format as well as complete source information for proper citations in school projects. No advertisement-filled pages with pop-up windows or inappropriate links here. A friendly license allows teachers and students to use up to 50 items in a single, non-commercial project without further permission. http://etc.usf.edu/clipart/i/banner.jpg http://etc.usf.edu/clipart/ This website is CoolIris enabled! You can use the CoolIris browser plugin to view the images on this site in an interactive 3D wall.<br><br><br><br> http://www.cooliris.com/ Archegosaurus is a genus of amphibian which lived during the Asselian to Wuchiapingian ages of the Permian, around 299-253 million years ago.... http://etc.usf.edu/clipart/58700/58740/58740_archegosauru.htm Archegosaurus is a genus of amphibian which lived during the Asselian to Wuchiapingian ages of the Permian, around 299-253 million years ago. Pictured here is the dorsal vertebrae.... http://etc.usf.edu/clipart/58700/58741/58741_archegosauru.htm Branchiosaurus (Greek for "gill lizard") is a genus of small, lightly-built early prehistoric amphibians. Pictured here is the dorsal vertebra.... http://etc.usf.edu/clipart/58700/58743/58743_branchiosaur.htm Capillaries (C) in the web of the frog's foot connecting a small artery (A) with a small vein (V).... http://etc.usf.edu/clipart/50800/50844/50844_capillaries.htm Development of capillaries in the regenerating tail of a tadpole. a b c d, sprouts and cords of protoplasm.... http://etc.usf.edu/clipart/51300/51300/51300_capillary.htm Development of capillaries in the regenerating tail of a tadpole. a b c d, sprouts and cords of protoplasm. The sprouts and cords of protoplasm have become channeled out into capillaries. ... http://etc.usf.edu/clipart/51300/51301/51301_capillary.htm Capillary blood vessel of the tail of a young larval frog. a, capillaries permeable to blood; b, fat granules attached to the walls of the vessels, and concealing the nuclei; c, hollow prolongation of... http://etc.usf.edu/clipart/51200/51299/51299_capillary.htm A diagram of the circulation of a frog. Labels: 1, The pericardium. 2, The single ventricle. 3, The right auricle. 4, The left auricle. The arrows indicate the direction of the blood.... http://etc.usf.edu/clipart/50500/50594/50594_frog.htm Horizontal preparation of cornea of frog; showing the network of branched cornea-corpuscles. The ground substance was completely colorless. ... http://etc.usf.edu/clipart/51100/51177/51177_cornea.htm Development of young warty-newts. ... http://etc.usf.edu/clipart/13600/13667/wartnewtdevl_13667.htm "Frog with the left side cut away and some of the organs pulled downward. a, aorta leading from the ventricle; b, bladder; c, spinal cord surrounded by the vertebral column of bone; d, small intestin... http://etc.usf.edu/clipart/28400/28463/dissected_fr_28463.htm A cluster of frog eggs... http://etc.usf.edu/clipart/8200/8288/frog_eggs_8288.htm A line of toad eggs... http://etc.usf.edu/clipart/8200/8290/toad_eggs_8290.htm "Figure 1 represents the embryo as it appears several days after the egg is deposited." &mdash; Goodrich. 1859... http://etc.usf.edu/clipart/13500/13571/embryo_13571.htm "Figure 2 gives an outline of its form; the arrows at the side of the head show the currents of water which are seen to flow to the branchiae by the breathing of the young animal." &mdash; Goodrich. 1... http://etc.usf.edu/clipart/13500/13572/formembryo_13572.htm Skull of <i>salamandra maculosa</i>, the fire salamander.... http://etc.usf.edu/clipart/35200/35220/firesalskull_35220.htm This illustration shows the ancient fossile of an amphibian. Fossils are the mineralized or otherwise preserved remains or traces of animals, plants, and other organisms.... http://etc.usf.edu/clipart/23700/23767/fossil_23767.htm A side view of a frog's internal structure.... http://etc.usf.edu/clipart/7000/7004/frog_7004.htm A ventral view of a frog's internal structure.... http://etc.usf.edu/clipart/7000/7005/frog_7005.htm A ventral view of a frog's internal nervous system.... http://etc.usf.edu/clipart/7000/7006/frog_7006.htm The heart and lungs of a frog. 1: Heart. 2: Arch of the aorta. 3: Pulmonary artery. 4: Pulmonary veins. 5: Aorta. 6: Vena cava.... http://etc.usf.edu/clipart/22400/22413/frog_22413.htm "Chondrocranium of Frog (Rana esculenta). y, girdle-bone or os en ceinture; EO, exoccipital; PrO, pro&ouml;tic; QJ, quadratojugal." -Whitney, 1911... http://etc.usf.edu/clipart/69900/69950/69950_frog_cranium.htm "The Tadpole is the larva of the anurous amphibia, sometimes so far extended as to include larva&aelig; of the urodela, which undergo a much less complete metamorphosis. At first the young have no res... http://etc.usf.edu/clipart/16500/16584/frogegg_16584.htm "The Tadpole is the larva of the anurous amphibia, sometimes so far extended as to include larva&aelig; of the urodela, which undergo a much less complete metamorphosis. At first the young have no res... http://etc.usf.edu/clipart/16500/16582/frogeggs_16582.htm "Longitudinal vertical section of frog embryo, shortly before closure of blastopore. FB., fore-brain; EC., ectoderm; N., notochord; SC., canal of spinal cord; NE., nerenteric canal; B., blastopore; M.... http://etc.usf.edu/clipart/48000/48078/48078_frog_embryo.htm