Rotularia

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Rotularia
Temporal range: Kimmeridgian–Eocene (Jäger, 2004)
File:Rotularia concava DCM.JPG
Rotularia concava fossil
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Annelida
Clade: Pleistoannelida
Clade: Sedentaria
Order: Sabellida
Family: Serpulidae
Genus: Rotularia
Defrance, 1827

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.[1] 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

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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).[2] Rotularia originates in shallow marine environments.[3] Their tubes have two layers with different microstructure (Vinn, 2008). This genus is known from the early Kimmeridgian to Late Eocene (Jäger, 2004).

References

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  • 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.
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