SENONIAN FOSSILS FROM TOURAINE

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Description	Genus	Species	Classification	Fossilization	Formation	Origin
sponges	Siphonia	pyriformis	Sponges	silicification	clayey-siliceous formations	?

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The fact of cutting these sponges in two parts allows to show the internal structure: the numerous inhalant canals (by where the sea water, loaded with nutriments, enters) and the exhalant oscule (big orifice by where the sea water goes out).