pˈiː. sˈædʒɪɾə ɪz fˈaʊnd ɪnðə vˈɜːkhɑːvkə fɔːɹmˈeɪʃən ɔnðə sˈɑːlzɚ ɹˈɪvɚ, wˈaɪt sˈiː ˈɛɹiə ʌvðɪ ˈɑːɹkhɐndʒˌɛlsk ɹˈiːdʒən, ɹˈʌʃə.
P. sagitta is found in the Verkhovka formation on the Solza River, White Sea area of the Arkhangelsk Region, Russia.