Turcutheca is a Tommotian (Early Cambrian) genus of shelly fossil whose affinities are uncertain, generally considered as an orthothecid hyolithe.g. Brasier, M. D. (1986). The succession of small shelly fossils (especially conoidal microfossils) from English Precambrian–Cambrian boundary beds. Geological Magazine, 123(3), 237–256. doi:10.1017/S0016756800034737 (which would make it a brachiopod, but also resembling the ellesmeroceratids (early cephalopods).
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