# Rotularia

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{{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](/source/Jacques_Louis_Marin_DeFrance), 1827
| subdivision_ranks = Species
| subdivision =
}}

'''''Rotularia''''' is an extinct [genus](/source/genus) of [planispiral](/source/planispiral)ly coiled fossil [polychaete worms](/source/polychaete) in the family [Serpulidae](/source/Serpulidae). Owing to the [gastropod](/source/gastropod)-like shape of ''Rotularia'', many authors in the past interpreted this genus as being [sea snail](/source/sea_snail)s in the family [Vermetidae](/source/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](/source/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](/source/Kimmeridgian) to Late [Eocene](/source/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}}

{{Taxonbar|from=Q2221495}}

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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Adapted from the Wikipedia article [Rotularia](https://en.wikipedia.org/wiki/Rotularia) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Rotularia?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.