In response, the National Center for Science Education notes that none of the textbooks reviewed by Wells makes the claimed error, as Haeckel's drawings are shown in a historical context with discussion about why they are wrong, and the accurate modern drawings and photos used in the textbooks are misrepresented by Wells.
En resposta, o National Center for Science Education sinalou que ningún dos libros de texto revisados por Wells comete o erro que este sinala, xa que os debuxos de Haeckel son mostrados nun contexto histórico discutíndose neles por que son incorrectos, e os correctos debuxos e fotos modernos usados en libros de texto son malinterpretados por Wells.