| Glomerula Temporal range: Jurassic - present
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| Glomerula gordialis from the Upper Cretaceous of Germany | |
Scientific classification 
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| Kingdom: | Animalia |
| Phylum: | Annelida |
| Clade: | Pleistoannelida |
| Clade: | Sedentaria |
| Order: | Sabellida |
| Family: | Sabellidae |
| Subfamily: | Sabellinae |
| Genus: | Glomerula Brünnich Nielsen, 1931 |
| Species | |
Glomerula is a genus of polychaete worm in the family Sabellidae. It differs from all other Sabellidae in having a calcareous tube and spinose setae. Only one living species, G. piloseta, is known from Lizard Island, Great Barrier Reef, Australia. 2 The oldest fossils of Glomerula are known from the Early Jurassic1 and their tube microstructure has remained unchanged since then.3
References
References
- Jäger, M. (2004). "Serpulidae und Spirorbidae (Polychaeta sedentaria) aus Campan und Maastricht von Norddeutschland, den Niederlanden, Belgien und angrenzenden Gebieten". Geologisches Jahrbuch. A 157: 121–249.
- Perkins, T.H. (1991). "Calcisabella piloseta, new genus and species of Sabellinae (Polychaeta: Sabellidae)". Bulletin of Marine Science. 48 (2): 261–267.
- Vinn, O.; ten Hove, H.A.; Mutvei, H. (2008). "On the tube ultrastructure and origin of calcification in sabellids (Annelida, Polychaeta)". Palaeontology. 51 (2): 295–301. Bibcode:2008Palgy..51..295V. doi:10.1111/j.1475-4983.2008.00763.x.