ˈɑːb fˈoːɹɾi wʌz ɹᵻnˈeɪmd poʊnɹˈɑːstɪəs ɛɡzˈɑːdʒɪɹˌɑːɹɹəm spˈiːsiːz nˈeɪm ɐmˈɛndᵻd baɪ dʒˈɔːɹdʒ ɑːlʃˈɛvski ɪn tˈuː θˈaʊzənd, ænd ɑːlʃˈɛvski kənsˈɪdɚd poʊnɹˈɑːstɪəs təbi ɐ nˈoʊmɛn dˈuːbiəm; ðə hˈɑːlətˌaɪp hɐz sˈɪns bˌɪn pˌʊt ˌɔn dɪsplˈeɪ æt ðə nˈæʃənəl mjuːzˈiəm ɪn pɹˈɑːɡ.
Ob 40 was renamed Ponerosteus exogyrarum (species name amended) by George Olshevsky in 2000, and Olshevsky considered Ponerosteus to be a nomen dubium; the holotype has since been put on display at the National Museum in Prague.