Marcusodictyon
Marcusodictyon is a genus of problematic fossils. It has been considered the oldest bryozoan in several publications. Taylor (1984) revised the systematics of the genus and removed it from Bryozoa. The fossil constitutes a phosphatic network of low ridges that enclose polygons about 0.3–1.2 mm wide that are generally 6-sided but can be 4-, 5- or 7-sided. The internal microstructure of Marcusodictyon is composed of laminae parallel to external surfaces of ridges (Taylor 1984). Marcusodictyon occurs on late Cambrian and Tremadocian lingulate brachiopods of Baltica (Vinn 2015).
| Marcusodictyon Temporal range: | |
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| Phylum: | incertae sedis |
| Genus: | Marcusodictyon† Bassler 1911 |
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References
- Taylor, P.D. (1984). Marcusodictyon Bassler from the Lower Ordovician of Estonia: not the earliest bryozoan but a phosphatic problematicum. Alcheringa 8, 177–186.
- Vinn, O. (2015). "Rare encrusted lingulate brachiopods from the Cambrian–Ordovician boundary beds of Baltica". Alcheringa. doi:10.1080/03115518.2016.1101234. Retrieved 2015-12-15.
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