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avancna — Phragmoceras and Tubiferoceras
Published: 2011-10-30 05:18:13 +0000 UTC; Views: 2526; Favourites: 24; Downloads: 0
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Description
Two phragmoceratid nautiloids from the Middle Silurian of Gotland, Sweden.The larger is Phragmoceras arcuatum, the smaller is Tubiferoceras proboscoideum.
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Comments: 6
What is that tube projecting from that long cleft in their shell? Is it their pharynx?
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Wow, what weird proportions for nautiloidsuses!
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