ɔːlðˈoʊ mˈoʊst ɡɹˈuːps dɪdnˌɑːt sɚvˈaɪv bᵻjˌɔnd ðə tɹaɪˈæsɪk, wˈʌn lˈɪnɪɪdʒ, ðə bɹˈækɪˌɑːpɔɪdz, kəntˈɪnjuːd ʌntˈɪl ðə kɹɛtˈeɪʃəs pˈiəɹɪəd.
Although most groups did not survive beyond the Triassic, one lineage, the brachyopoids, continued until the Cretaceous period.