"Cephalopods of Subclass Ammonoidea and especially the Mesozoic forms known in the vernacular as 'ammonites' are amongst the most abundant...

As the story goes, a medical doctor asked his child, "Didn't you register the alternate phases of rarefaction and condensation of my vocal cord...

  It has been almost one hundred fifty years since Darwin published his infamous On the Origin of Species in 1859. No species origin has ever been...