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Triops cacriformis is not the oldest still extant species, for example the horseshoe crab Limulus polyphemus is still extant and over 445 million years old. to have the wording of the article say it is considered the oldest species is therefore a bit misleading as many would make the assumption from those words that it IS the oldest species, when it is not. I am changing wording of the article to reflect that this is one of the oldest still extant species but not the oldest. --Shearluck (talk) 13:51, 29 June 2010 (UTC)
The horseshoe crab known from the Ordovician is Lunataspis aurora, they are not from any extant species. — Preceding unsigned comment added by Brett Dunbar (talk • contribs) 20:20, 6 December 2011 (UTC)