Title: Pencil Urchin Description: Pencil Urchin; Heterocentrotus mammillatus; Phylum Echinodermata Location: Washington, D.C., July 29, 2009 Category: Natural History Topic: Marine Life Keywords: animal, marine, ocean. Orientation: Landscape Dimensions: 3000 x 2400 (7.20 MPixels) (1.25) Print Size: 25.4 x 20.3 cm; 10.0 x 8.0 inches File Size: 20.62 MB (21,625,212 Bytes) Resolution: 300 x 300 dpi Color Depth: 16.7 million (24 BitsPerPixel) Compression: None Image Number: 0000206485c Source: Jay Robert Nash Collection
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