Mutsara 1: Zvisaririra zvinowanwa muSt. Louis zvinosanganisira makorari e rugosan Lithostrotion '' uye Lithostrotionella '' uye bryozoan Fenestrellina ''. Mutsara 2: Mabwe akawanikwa kakawanda muSt. Louis anosanganisira makorari anonzi Bryozoan'Lithostrotion `` uye'Lithostrotionella `` uye anonzi Rugosan'Fenestrellina ``. Mubvunzo: Mutsara wokutanga nomutsara wechipiri unoreva chinhu chimwe chete here? Hungu kana kuti Aiwa?
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