 Ramba uchinyora ndima iyi - Chimwe chinhu chemuziyamu chaikosha zvikuru chaiva chisaririra, Hydrarchos kana kuti Zeuglodon, icho bhuku rinonzi The Complete Guide to the St. Louis Museum rakati chisaririra chikuru zvikurusa munyika. Zeuglodon yakavakwa zvikurukuru nezvinyorwa zvebasilosaurus zvakawanwa muna 1848 mumunda muAlabama. Pashure pokunge vabudiswa padombo ravakawanwa mariri, Dr. Koch akatenga zvisaririra nokuda kweSt. Louis Museum. Zvicherwa zvacho zvakaratidzwa kuna Benjamin Silliman, nyanzvi yemakemikari yokuYale, zvichida asati arongwazve naKoch. Silliman, uyo akanga achangobva kupa hurukuro pamusoro pebasilosaurus, akanyora tsamba kuna Koch pamusoro pezvaakanga awana. Chikwangwani chaishambadza kuratidzwa kwacho chakatora tsamba yaSilliman kubva mumashoko acho ndokutaura kuti hydrarchus ndiye Leviathan weNyika Yakatangira Mafashamo. Purofesa Joseph Leidy akapupurirawo kuti zvisaririra zvacho ndezvechokwadi, kunyange zvazvo zvisiri pachena kana akazviona Koch asati agadzirisazve nzvimbo dzacho kana kuti pashure pacho. Purofesa Jeffries Wyman pakupedzisira akafumura kunyengera kwacho, uye Silliman akanyora imwe tsamba kuna Koch achikumbira kuti asabatanidzwe nechiratidziro chacho. Hydrarchos yakaramba ichiratidzwa uye yakaendeswa naKoch kuDresden, uko yakaparadzwa nokuputika kweAllied kweguta iroromuHondo Yenyika II. Muenzaniso muduku wakaparadzwa muGreat Chicago Fire. 