sˈɪns ðˈɛn, ðiːz dʒˈɛnɚɹə wɜː ɹˈɛkəɡnˌaɪzd æz sˈɪnənˌɪmz ʌv tˈɜːɹɪɡˌɑːplɪtʃθiz baɪ ˈɑːɹmbɹʌstɚ, æz ðə fjˈuː dˈɪfɹənsᵻz bᵻtwˌiːn ðə dʒˈɛnɚɹə wɜː nˌɑːt dˈiːmd ɡɹˈeɪt ɪnˈʌf tə vˈælᵻdˌeɪt ɡlˈɪptoʊpɹˌɪtʃθiz ænd lˈɪpəsˌɑːɹkəs, ænd ðæt ɹˈɛkəɡnˌaɪzɪŋ ðiːz sˈɛpɹət dʒˈɛnɚɹə wʊd lˈiːv nˈiːðɚ tˈɜːɹɪɡˌɑːplɪtʃθiz nˈɔːɹ ɡlˈɪptoʊpɹˌɪtʃθiz æz mˌɑːnoʊfaɪlˈɛɾɪk.
Since then, these genera were recognized as synonyms of Pterygoplichthys by Armbruster, as the few differences between the genera were not deemed great enough to validate Glyptoperichthys and Liposarcus, and that recognizing these separate genera would leave neither Pterygoplichthys nor Glyptoperichthys as monophyletic.