| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Taxonomy
Inoperna bellarugosa was named by Popenoe (1937). Its type specimen is CIT (IP) 3420 and is a 3D body fossil. Its type locality is CIT loc. 1068, Santa Ana Mountains, which is in a Turonian delta front siltstone/shale in the Ladd Formation of California.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1937 | Inoperna bellarugosa Popenoe p. 382 figs. Plate 45, figures 6, 7 |
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.
†Inoperna bellarugosa Popenoe 1937
show all | hide all
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| W. P. Popenoe 1937 | Shell of moderate size, elongate, compressed, gently concave on the ventral and convex on the dorsal mar- gins, margins diverging slightly posterior- ly; beaks low and small, markedly anterior but not terminal; anterior end smoothly rounded into the ventral margin; posterior end also smoothly rounded, with no marked posterior truncation; poste- rior umbonal angulation low and broad, extending from the umbo to the ventral posterior margin; sculpture consisting of narrow concentric lamellae paralleling the border of the shell, and of strong undulations developed upon the dorsal posterior border, paralleling the growth lines dorsally but dying out along the posterior umbonal angulation; undula- tions variable in their development on different individuals; in tern al characters of the shell unknown. |