Biology:Polysacos
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Short description: Extinct genus of molluscs
| Polysacos | |
|---|---|
Scientific classification 
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| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Polyplacophora |
| Order: | †Multiplacophora |
| Genus: | †Polysacos Vendrasco et al., 2004 |
| Species: | †P. vickersianum
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| Binomial name | |
| †Polysacos vickersianum Vendrasco et al., 2004
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Polysacos is an extinct genus of multiplacophorans (chitons) known from articulated Carboniferous fossils; its seventeen shell plates are arranged in three rows, with seven iterated units. It demonstrates that multiplacophora are related to modern polyplacophora.[1] It was fringed with a ring of hollow spines resembling those of the Ordovician Echinochiton.[1]
References
- ↑ 1.0 1.1 Vendrasco, M. J.; Wood, T. E.; Runnegar, B. N. (2004). "Articulated Palaeozoic fossil with 17 plates greatly expands disparity of early chitons". Nature 429 (6989): 288–291. doi:10.1038/nature02548. PMID 15152250. Bibcode: 2004Natur.429..288V.
Wikidata ☰ Q7226918 entry
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