91 | Add to Reading ListSource URL: www.stratigraphy.orgLanguage: English - Date: 2014-12-04 12:48:36
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92 | Add to Reading ListSource URL: www.paleosoc.orgLanguage: English - Date: 2013-01-11 15:38:35
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93 | Add to Reading ListSource URL: imnh.isu.eduLanguage: English - Date: 2001-06-19 17:51:31
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94 | Add to Reading ListSource URL: www.geoconvention.comLanguage: English - Date: 2014-04-01 11:29:10
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95 | Add to Reading ListSource URL: www.stratigraphy.orgLanguage: English - Date: 2014-08-15 11:26:15
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96 | Add to Reading ListSource URL: www.nps.govLanguage: English - Date: 2006-07-20 16:22:38
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97 | Add to Reading ListSource URL: www.uky.eduLanguage: English - Date: 2008-12-15 20:27:46
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98 | Add to Reading ListSource URL: pubs.usgs.govLanguage: English - Date: 2012-06-22 15:15:36
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99 | Add to Reading ListSource URL: pubs.usgs.govLanguage: English - Date: 2012-03-22 09:44:24
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100 | Add to Reading ListSource URL: csmres.jmu.eduLanguage: English - Date: 1999-06-09 10:19:20
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