Historical clue formulations

• So-called "missing links" — 2024-02-15
• Hypothetical missing links — 2022-05-06
• Prehistoric human relations? — 2021-10-18
• Missing links — 2014-09-10
• Tarzan and others — 2011-07-19
• Missing links, so to speak — 2011-03-05
• Cave dwellers — 2010-10-03
• Tarzan and kin — 2009-09-28
• "2001" extras — 2008-12-24
• Ancestors from long, long ago — 2008-09-27
• Missing links? — 2008-06-05
• Sci-fi figures — 2008-03-06
• Transitional figures — 2006-07-08
• Brawny fellers — 2002-04-05
• Cave dwellers — 2000-12-02
• "2001" extras — 1998-08-16