Human Skull on a Shelf by Jefferson Hayman --- Image by © Jefferson Hayman/Jefferson Hayman/Corbis
Pirate Flag --- Image by © Kulka/Corbis
A cow skull with a fork and knife as crossbones --- Image by © 2/Kevin Lanthier/RK Studio/Ocean/Corbis
Mounted birds and other items from natural history museum --- Image by © Clinton Hussey/Corbis
Sword fish skeleton with items from natural history museum --- Image by © Clinton Hussey/Corbis
Human skull with artificial eye --- Image by © Elisa Lazo de Valdez/Corbis
Rochester, Michigan, USA --- Skull, magnifying glass, candle and books on table --- Image by © Chris Clor/Blend Images/Corbis
A tintype of a wedding cake topper next to a human skull. --- Image by © Mike Cullen/Corbis
Original caption: Names of various owners identify the Jolly Rogers shown. The pirate's usual black flag and death's head was called a Roger. Undated Photo. --- Image by © Bettmann/CORBIS
Skull and crossbones --- Image by © Gregor Schuster/Corbis
Tattered pirate flag --- Image by © Jamie Grill/Tetra Images/Corbis
New York State, USA --- A monkey skull and crossbones sit on the intoduction page of Darwin's "Origin of Species". --- Image by © Thom Lang/Corbis
Human skull, studio shot --- Image by © Elisa Lazo de Valdez/Corbis
Human skull, studio shot --- Image by © Elisa Lazo de Valdez/Corbis
29 Apr 2008 --- Close up of x-ray of skull --- Image by © Walter Zerla/Blend Images/Corbis
Poison --- Image by © Image Source/Corbis
1552 --- Vanitas Still Life by Pieter Aertsen --- Image by © The Gallery Collection/Corbis
The letter X resembling a skull and cross bones --- Image by © ImageZoo/Corbis
1627. Oil on panel. 132 x 75 cm (52 x 29.5 in). Rijksmuseum, Amsterdam, Netherlands. --- Image by © Corbis
Skull and crossbones --- Image by © Saul Gravy/Ikon Images/Corbis
Stuffed Kiwi with items from natural history museum --- Image by © Clinton Hussey/Corbis
19 Nov 2012 --- Skull and crossbones --- Image by © Larry Limnidis/ImageZoo/Corbis
Shotgun injury. Coloured X-ray of the head of a 58 year old male patient with a shotgun pellet in the side of his left eye.
Close-up view of English (c. 1840) white and gilt gesso firescreen containing a variety of exotic stuffed birds, in the Oak Drawing Room at Powis Castle. --- Image by © Andreas von Einsiedel/Corbis
"Vanity" (detail). Oil on canvas by Sebastian Stoskopff (1597-1657). Strasbourg, Musée de l'Œuvre Notre-Dame. --- Image by © adoc-photos/Corbis
05 Aug 2006, Peisey-Nancroix, France, France --- Detail of Altar at Peisey-Nancroix Church --- Image by © Atlantide Phototravel/Corbis
2010 --- Skull and Crossbones by Jefferson Hayman --- Image by © Jefferson Hayman/Jefferson Hayman/Corbis
23 Nov 2010 --- White skull and crossbones symbolizing danger or death. --- Image by © Science Picture Co./Corbis
Rams skull with items from natural history museum --- Image by © Clinton Hussey/Corbis
08 Oct 2013 --- Black human skull on a dark background --- Image by © Arman Zhenikeyev/Corbis
Skull underwater --- Image by © Tim Tadder/Corbis
Toxic Hazard Sign --- Image by © Corbis