| Rotularia | |
|---|---|
 | |
| Rotularia concava fossil | |
Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Annelida |
| Clade: | Pleistoannelida |
| Clade: | Sedentaria |
| Order: | Sabellida |
| Family: | Serpulidae |
| Genus: | †Rotularia Defrance, 1827 |
Rotularia is an extinctgenus ofplanispirally coiled fossilpolychaete worms in the familySerpulidae. Owing to thegastropod-like shape ofRotularia, many authors in the past interpreted this genus as beingsea snails in the familyVermetidae.[1] Like many other members fromVermetidae the Rotularia is approximately 5 inches in length. This is an estimate from the 151 confirmed fossil discoveries.
AllRotularia 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 earlyKimmeridgian to LateEocene (Jäger, 2004).
