{{Short description|Genus of annelids}} {{Automatic taxobox | fossil_range = {{fossil range|Kimmeridgian|Eocene}} (Jäger, 2004) | image = Rotularia concava DCM.JPG | image_caption =''Rotularia concava'' fossil | taxon = Rotularia | authority = Defrance, 1827 | subdivision_ranks = Species | subdivision = }}
'''''Rotularia''''' is an extinct genus of planispirally coiled fossil polychaete worms in the family Serpulidae. Owing to the gastropod-like shape of ''Rotularia'', many authors in the past interpreted this genus as being sea snails in the family Vermetidae.<ref>{{Cite book |last=Fortey |first=Richard A. |url= |title=Fossils: The Key to the Past |date=1991 |publisher=Harvard University Press |isbn=978-0-674-31135-0 |page=84 |language=en}}</ref> Like many other members from Vermetidae the Rotularia is approximately 5 inches in length. This is an estimate from the 151 confirmed fossil discoveries.
== Description == All ''Rotularia'' species were cemented to the substrate during their earliest growth stage, but they became detached shortly after the formation of the first whorls (Savazzi, 1995).<ref>{{Cite book |last=Sieveking |first=G. de G. |url= |title=The Scientific Study of Flint and Chert: Proceedings of the Fourth International Flint Symposium Held at Brighton Polytechnic 10-15 April 1983 |last2=Hart |first2=M. B. |date=2011-07-14 |publisher=Cambridge University Press |isbn=978-0-521-16915-8 |page=64 |language=en}}</ref> Rotularia originates in shallow marine environments.<ref>{{Cite book |last=Zealand |first=The Royal Society of New |url= |title=New Zealand Journal of Geology and Geophysics |publisher=The Royal Society of New Zealand |page=1040 |language=en}}</ref> Their tubes have two layers with different microstructure (Vinn, 2008). This genus is known from the early Kimmeridgian to Late Eocene (Jäger, 2004).
==References== {{Reflist}} *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. *Savazzi, E. 1995. Morphology and mode of life of the polychaete ''Rotularia''. Paläontologische Zeitschrift 69, 73–85. *{{cite journal | doi = 10.1666/06-125.1 | title = Tube ultrastructure of the fossil genus ''Rotularia'' Defrance, 1827 (Polychaeta, Serpulidae) | year = 2008 | author = Vinn, O. | journal = Journal of Paleontology | volume = 82 | issue = 1 | pages = 206–212 | bibcode = 2008JPal...82..206V | s2cid = 129387553 | url = https://www.researchgate.net/publication/222089803 | accessdate = 2014-06-12}}
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Category:Paleogene animals of Africa Category:Serpulidae Category:Prehistoric annelid genera Category:Kimmeridgian genus first appearances Category:Eocene genus extinctions Category:Late Jurassic invertebrates Category:Late Cretaceous invertebrates Category:Paleocene invertebrates Category:Eocene invertebrates Category:Fossil taxa described in 1827 Category:Early Cretaceous invertebrates Category:Polychaete genera
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