Shimanskya
| Shimanskya | |
|---|---|
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Subclass: | Coleoidea |
| Superorder: | Decapodiformes |
| Order: | Spirulida? |
| Family: | Shimanskyidae Doguzhaeva, Mapes & Mutvei, 1999 |
| Genus: | Shimanskya Doguzhaeva, Mapes & Mutvei, 1999 |
| Species | |
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| Synonyms | |
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Shimanskya is a late Carboniferous fossil tentatively interpreted as an early spirulid.[1] However it lacks any clearly diagnostic characters and its affinity is best considered to lie in an unresolved stem group.[2]
References
- ↑ Strugnell, J.; Jackson, J.; Drummond, A. J.; Cooper, A. (2006). "Divergence time estimates for major cephalopod groups: evidence from multiple genes". Cladistics. 22: 89–96. doi:10.1111/j.1096-0031.2006.00086.x.
- ↑ Warnke, K; Plötner, J; Santana, JI; Rueda, MJ; Llinas, O (2003). "Reflections on the phylogenetic position of Spirula (Cephalopoda): preliminary evidence from the 18S ribosomal RNA gene" (PDF). Berliner Paläobiologische Abhandlungen. 3: 253–260.
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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| Cambrian |
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