| Turcutheca Temporal range: | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Superphylum: | Lophotrochozoa |
| Class: | †Hyolitha |
| Order: | †Orthothecida (?) |
| Family: | †Circothecidae |
| Genus: | †Turcutheca |
Turcutheca is a Tommotian (Early Cambrian) genus of shelly fossil whose affinities are uncertain, generally considered as an orthothecid hyolith[2] (which would make it a brachiopod,[3] but also resembling the ellesmeroceratids (early cephalopods).[1]
References
- 1 2 Dzik, J. (2010). "Brachiopod Identity of the Alleged Monoplacophoran Ancestors of Cephalopods". Malacologia. 52 (1): 97–113. doi:10.4002/040.052.0107.
- ↑ e.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
- ↑ Moysiuk, Joseph; Smith, Martin R; Caron, Jean-Bernard (2017). "Hyoliths are Palaeozoic lophophorates" (PDF). Nature. 541 (7637): 394–397. Bibcode:2017Natur.541..394M. doi:10.1038/nature20804. PMID 28077871.
Notable fossil cephalopods (listed by first occurrence) | |||||||||
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| Cenozoic |
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| Mesozoic |
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| Palaeozoic |
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| Misidentified |
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