| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Eoptychia sulcata
Taxonomy
Loxonema sulcatum was named by de Koninck (1881). It is a 3D body fossil. It is the type species of Eoptychia.
It was recombined as Eoptychia sulcata by Longstaff (1933).
It was recombined as Eoptychia sulcata by Longstaff (1933).
Synonymy list
| Year | Name and author |
|---|---|
| 1881 | Loxonema sulcatum de Koninck p. 54 figs. pl. 6 f. 10-11 |
| 1933 | Eoptychia sulcata Longstaff p. 113 figs. pl. 10 f. 1-3 |
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.
†Eoptychia sulcata de Koninck 1881
show all | hide all
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. D. Longstaff 1933 | Shell moderately elongated, conical, having about eleven whorls. Whorls high, sub-angular below, flattened laterally, narrowly adpressed and somewhat swollen below the suture, with a fine thread on the upper edge. Surface ornamented on the early whorls by slightly oblique fine ribs running from suture to suture; on the later whorls these ribs only remain strong above and become divided and finer below, so that on the body-whorl they are merged with fine curved lines of growth. Base smooth and moderately produced. Aperture ovate, columella arcuated and slightly thickened. |