Yakavakwa muna 1893 uye yakagadzirirwa nomugadziri wemifananidzo akakurumbira Wilson Eyre kuti ive musha waJoseph Leidy (1823 - 1891), nyanzvi yezvakaitika kare yakakurumbira yokuAmerica.
Zvechokwadi, shanduro yakaoma zvikuru yemutsara ndeyekuti "Yakavakwa muna 1893 uye yakagadzirwa nemugadziri anozivikanwa Wilson Eyre kuti ave musha waJoseph Leidy (1823 - 1891), muongorori weAmerica anozivikanwa, uye agere pedyo neimba yaClarence B. Moore, iyo yakagadzirwa naEyre muna 1890. "