| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Epitonium (Cirsotrema) clallamense
Taxonomy
Epitonium (Cirsotrema) clallamense was named by Durham (1937). Its type specimen is CAS 7003 and is a 3D body fossil.
Sister species lacking formal opinion data
Cirsotrema cochlea, Cirsotrema cortezi, Cirsotrema firmatum, Cirsotrema koeneni, Cirsotrema lyratum, Cirsotrema undulatum, Cirsotrema lyratum, Cirsotrema tamanense, Cirsotrema bouillei, E. expectatum, E. foliaceicostum, E. humphreysi, E. imperiale, E. leroyi, E. multiliniferum, E. muricatum, E. sculptatum, E. paytens, E. gabbi, E. novangliae, E. rushii, E. sericifilum, E. venezuelense, E. emydoneus, E. groenlandica, E. suboptima, E. charitopolos, E. foliaceicostatum, E. foliaceicostum, E. foliaceicostum, E. foliaceiscostatum, E. krebsii, E. replicata
Synonymy list
Is something missing? Join the Paleobiology Database and enter the data
|
|
If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
†Epitonium (Cirsotrema) clallamense Durham 1937
show all | hide all
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. W. Durham 1937 | Shell moderately large to large in size; rather heavy; about 9 well-rounded whorls; sutures deep; ornamented by 8 to 10 heavy varices with a prominent angulation just below the suture; interspaces approximately one and one-half times as wide as varices; 3 low, broad spiral ribs on the central portion of the whorl, above these there are 2 or 3 indistinct spirals; the three more prominent spirals can be seen on the outer surface of the varices on well-preserved specimens; character of the aperture in- determinate. |