Mugore ra1906, boka reAmerican Museum of Natural History rakatungamirwa naBarnum Brown rakawana mhando yeAnkylosaurus magniventris (AMNH 5895) muHell Creek Formation, pedyo neGilbert Creek, kuMontana. Muenzaniso uyu (wakawanikwa nemuunganidzi Peter Kaisen) waive nechikamu chepamusoro chehuro, mazino maviri, chikamu chebhandi remapfudzi, mutsipa wechibereko, musana, uye mbabvu, mbabvu, uye anopfuura makumi matatu osteoderms. Brown akatsanangura mhuka iyi nesainzi muna 1908; zita rejenasi rinobva mumashoko echiGiriki αγκυλος / ankulos ('bent' kana 'oked'), achireva izwi rekurapa ankylosis, kuomarara kunogadzirwa nekubatanidzwa kwemapfupa muhuro nemuviri, uye σαυρος / σαυρος / σαυρος / σαυρος / σαυρος / σαυρος / σαυρος / σαυρος / σαυρος / σαυρος / σαυρος / σαυρος / σαυρος / σαυρος / σαυρος / σαυρος / σαυρος /
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