Mutsara 1: Zvisaririra zvinowanwa muSt. Louis zvinosanganisira makorari anonzi rugosan'' Lithostrotion `` uye'' Lithostrotionella `` uye Bryozoan'' Fenestrellina ``. Mutsara wechipiri: Matongo anowanzowanikwa muSt. Louis anosanganisira makorari anonzi rugosan corals `` Lithostrotion '' uye `` Lithostrotionella '' uye bryozoan ` Fenestrellina ''. Mubvunzo: Mutsara wokutanga nomutsara wechipiri unoreva chinhu chimwe chete here? Hungu kana kuti Aiwa?
Hungu