 In 1990 George Olshevsky emended the name to "A. lammersorum", with the specific name in the genitive plural because it referred to several people.However, Dodson objected against this change, arguing the genitive singular might also refer to a single family name.In 1990 Thomas Lehman renamed "A. lammersi" into "Monoclonius lammersi"; This alternative name has found no acceptance.