Siphovalvulina is among the first foraminifera that appear on carbonate platforms of the Lower Jurassic. forming a conspicuous element of low-diversity assemblages prior to recovery after the end-Triassic biotic crisis. The high morphologic variability of species of this genus is usually not documented. which makes the determination of species difficult and subjective. https://chefesquipmenters.shop/product-category/first-aid-kits/
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