A classic illustration of La Brea Tar Pits. &quot;Smilodon and Canis dirus&quot; by Robert Bruce Horsfall - http://archive.org/stream/historyoflandmam00scot#page/n9/mode/2up. Licensed under Public Domain via Wikimedia Commons - http://commons.wikimedia.org/wiki/File:Smilodon_and_Canis_dir
A classic illustration of La Brea Tar Pits. &quot;Smilodon and Canis dirus&quot; by Robert Bruce Horsfall - http://archive.org/stream/historyoflandmam00scot#page/n9/mode/2up. Licensed under Public Domain via Wikimedia Commons - http://commons.wikimedia.org/wiki/File:Smilodon_and_Canis_dirus.jpg#/media/File:Smilodon_and_Canis_dirus.jpg