These are trilobite fossils provided by Nigel Hughes, of the Museum of Natural History and Science, at the Cincinnati Museum Center. These are the heads of trilobites from about 530 million years ago.
The exposed part of the specimen in this image is approximately 15.5 mm wide by 10.5 mm long, with total relief limited to perhaps 1.5 mm.
The exposed part of the specimen in this image is approximately 23 mm in diameter.
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| © Bob Cromwell Feb 2012. Created with /bin/vi and ImageMagick, hosted on OpenBSD with Apache. Root password available here, privacy policy here. |